CX93011-11Z - Conexant Systems, Inc.

Doc. No. 102635F

May 22, 2006

CX93011 CSMxx

V.92/V.34/V.32bis Controllered Serial

Modem with CX20548 SmartDAA

Data Sheet

Conexant Proprietary Information

Conexant Confidential Information

Dissemination, disclosure, or use of this information is not permitted

without the written permission of Conexant Systems, Inc.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

ii Conexant Proprietary and Confidential Information 102635F

Revision Record

Revision Date Comments

A 6/21/2005 Initial release.

B 7/15/2005 Rev. B release.

C 3/30/2006 Rev. C release.

D 4/18/2006 Rev. D release.

E 4/25/2006 Rev. E release.

F 5/22/2006 Rev. F release.

Information in this document is provided in connection with Conexant Systems, Inc. (“Conexant”) products. These materials are

provided by Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no

responsibility for errors or omissions in these materials. Conexant may make changes to this document at any time, without notice.

Conexant advises all customers to ensure that they have the latest version of this document and to verify, before placing orders, that

information being relied on is current and complete. Conexant makes no commitment to update the information and shall have no

responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as

provided in Conexant’s Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever.

THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,

RELATING TO SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO

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DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS

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resulting from such improper use or sale.

The following are trademarks of Conexant Systems, Inc.: Conexant and the Conexant C symbol, and SmartDAA. Product names

or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands

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CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information iii

Contents

Document Revision History .........................................................................................................................viii

1. Introduction..........................................................................................................................................1-1

1.1 Overview ......................................................................................................................................................................... 1-1

1.2 Features .......................................................................................................................................................................... 1-3

1.2.1 Applications.................................................................................................................................................... 1-4

1.3 Technical Overview......................................................................................................................................................... 1-5

1.3.1 General Description ........................................................................................................................................ 1-5

1.3.2 Embedded MCU Firmware.............................................................................................................................. 1-5

1.3.3 Operating Modes ............................................................................................................................................ 1-5

1.3.3.1 Data/Fax Modes.............................................................................................................................. 1-5

1.3.3.2 V.44 Data Compression.................................................................................................................. 1-6

1.3.3.3 Synchronous Access Mode (SAM) - Video Conferencing .............................................................. 1-6

1.3.3.4 TAM Mode ...................................................................................................................................... 1-6

1.3.3.5 Worldwide Operation...................................................................................................................... 1-6

1.3.4 Reference Designs.......................................................................................................................................... 1-8

1.4 Hardware Description ..................................................................................................................................................... 1-8

1.4.1 CX93011 Modem............................................................................................................................................ 1-8

1.4.2 Digital Isolation Barrier................................................................................................................................... 1-9

1.4.3 CX20548 SmartDAA Line Side Device............................................................................................................ 1-9

1.5 Commands ..................................................................................................................................................................... 1-9

2. Technical Specifications .......................................................................................................................2-1

2.1 Serial DTE Interface Operation........................................................................................................................................ 2-1

2.1.1 Automatic Speed/Format Sensing .................................................................................................................. 2-1

2.2 Establishing Data Modem Connections .......................................................................................................................... 2-2

2.2.1 Dialing ............................................................................................................................................................ 2-2

2.2.2 Modem Handshaking Protocol ....................................................................................................................... 2-2

2.2.3 Call Progress Tone Detection ......................................................................................................................... 2-2

2.2.4 Answer Tone Detection................................................................................................................................... 2-2

2.2.5 Ring Detection................................................................................................................................................ 2-2

2.2.6 Billing Protection ............................................................................................................................................ 2-2

2.2.7 Connection Speeds......................................................................................................................................... 2-3

2.2.8 Automode ....................................................................................................................................................... 2-3

2.3 Data Mode ...................................................................................................................................................................... 2-3

2.3.1 Speed Buffering (Normal Mode) .................................................................................................................... 2-3

2.3.2 Flow Control ................................................................................................................................................... 2-4

2.3.3 Escape Sequence Detection............................................................................................................................ 2-4

2.3.4 BREAK Detection ............................................................................................................................................ 2-4

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

iv Conexant Proprietary and Confidential Information 102635F

2.3.5 Telephone Line Monitoring............................................................................................................................. 2-4

2.3.6 Fall Forward/Fallback (V.92/V.90/V.34/V.32bis/V.32) .................................................................................... 2-4

2.3.7 Retrain............................................................................................................................................................ 2-4

2.3.8 Programmable Inactivity Timer ...................................................................................................................... 2-4

2.3.9 DTE Signal Monitoring (Serial DTE Interface Only)........................................................................................ 2-5

2.3.10 Call Progress Speaker Interface ..................................................................................................................... 2-5

2.3.11 Serial EEPROM Interface ................................................................................................................................ 2-5

2.4 V.92 Features (V.92 Model)............................................................................................................................................ 2-5

2.4.1 Modem-on-Hold ............................................................................................................................................. 2-5

2.4.2 Quick Connect ................................................................................................................................................ 2-6

2.4.3 PCM Upstream ............................................................................................................................................... 2-6

2.5 Error Correction and Data Compression......................................................................................................................... 2-6

2.5.1 V.42 Error Correction ..................................................................................................................................... 2-6

2.5.2 MNP 2-4 Error Correction .............................................................................................................................. 2-6

2.5.3 V.44 Data Compression.................................................................................................................................. 2-6

2.5.4 V.42bis Data Compression ............................................................................................................................. 2-6

2.5.5 MNP 5 Data Compression .............................................................................................................................. 2-7

2.6 Voice/Audio Mode .......................................................................................................................................................... 2-7

2.6.1 Online Voice Command Mode ........................................................................................................................ 2-7

2.6.2 Voice Receive Mode ....................................................................................................................................... 2-7

2.6.3 Voice Transmit Mode ..................................................................................................................................... 2-7

2.6.4 Full-Duplex Receive and Transmit Mode........................................................................................................ 2-7

2.6.5 Audio Mode .................................................................................................................................................... 2-8

2.6.6 Tone Detectors ............................................................................................................................................... 2-8

2.7 V.80 Synchronous Access Mode (SAM) ........................................................................................................................ 2-8

2.8 Telephony Extensions..................................................................................................................................................... 2-8

2.8.1 Line-in-Use Detection..................................................................................................................................... 2-8

2.8.2 Extension Pick-up Detection........................................................................................................................... 2-8

2.8.3 Remote Hang-up Detection ............................................................................................................................ 2-9

2.9 Point-of-Sales Support ................................................................................................................................................... 2-9

2.10 Fax Class 1 and Fax Class 1.0 Operation ........................................................................................................................ 2-9

2.11 Tone Detectors ............................................................................................................................................................... 2-9

2.12 Call Waiting Tone Detection............................................................................................................................................ 2-9

2.13 Caller ID .......................................................................................................................................................................... 2-9

2.14 Worldwide Country Support ......................................................................................................................................... 2-10

2.15 Diagnostics................................................................................................................................................................... 2-10

2.16 Low Power Modes........................................................................................................................................................ 2-11

2.16.1 Idle Mode...................................................................................................................................................... 2-11

2.16.2 Sleep Mode................................................................................................................................................... 2-11

2.16.3 Deep Sleep Mode.......................................................................................................................................... 2-11

2.16.4 Stop Mode .................................................................................................................................................... 2-11

3. Hardware Interface ...............................................................................................................................3-1

3.1 CX93011 Modem Hardware Interface Signals................................................................................................................ 3-1

3.1.1 CX93011 Modem Interface Signal Summary ................................................................................................. 3-1

3.1.1.1 LSD Interface (Through DIB).......................................................................................................... 3-1

3.1.1.2 Call Progress Speaker Interface ..................................................................................................... 3-1

3.1.1.3 Clock Select Interface..................................................................................................................... 3-1

3.1.1.4 Serial EEPROM Interface................................................................................................................ 3-1

3.1.1.5 Serial DTE Interface and Indicator Outputs .................................................................................... 3-1

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information v

3.1.2 CX93011 Modem Pin Assignments and Signal Definitions............................................................................3-2

3.1.3 CX93011 Modem Electrical Characteristics.................................................................................................... 3-6

3.2 CX20548 LSD Hardware Pins and Signals ..................................................................................................................... 3-7

3.2.1 General ........................................................................................................................................................... 3-7

3.2.1.1 Host Side Device (HSD) Interface (Through DIB) .......................................................................... 3-7

3.2.1.2 Power and Ground ......................................................................................................................... 3-7

3.2.1.3 Telephone Line Interface ................................................................................................................ 3-7

3.2.1.4 Voltage References......................................................................................................................... 3-7

3.2.1.5 General Purpose Input/Output........................................................................................................ 3-7

3.2.2 Pin Assignments and Signal Definitions......................................................................................................... 3-8

3.3 Operating Conditions, Absolute Maximum Ratings, and Power Requirements ........................................................... 3-12

3.4 Crystal and Clock Specifications................................................................................................................................... 3-14

4. Package Dimensions ............................................................................................................................4-1

5. Recommended QFN Surface Mount Land Patterns...............................................................................5-1

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

vi Conexant Proprietary and Confidential Information 102635F

Figures

Figure 1-1. CSMxx Modem Simplified Interface Diagram................................................................................................................... 1-2

Figure 3-1. CX93011 Modem Hardware Interface Signals.................................................................................................................. 3-2

Figure 3-2. CX93011 Modem 20-Pin QFN Pin Signals........................................................................................................................ 3-3

Figure 3-3. CX20548 LSD Hardware Interface Signals ....................................................................................................................... 3-8

Figure 3-4. CX20548 LSD 16-Pin QFN Pin Signals ............................................................................................................................. 3-9

Figure 4-1. Package Dimensions for 20-Pin QFN................................................................................................................................ 4-2

Figure 4-2. Package Dimensions for 16-Pin QFN................................................................................................................................ 4-3

Figure 5-1. Recommended Surface Mount Land Pattern for 20-Pin QFN........................................................................................... 5-1

Figure 5-2. Recommended Surface Mount Land Pattern for 16-Pin QFN........................................................................................... 5-2

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information vii

Tables

Table 1-1. CSMxx Modem Models and Functions............................................................................................................................... 1-2

Table 1-2. Default Countries Supported.............................................................................................................................................. 1-7

Table 2-1. +MS Command Automode Connectivity ............................................................................................................................ 2-3

Table 3-1. CX93011 Modem 20-Pin QFN Pin Signals......................................................................................................................... 3-3

Table 3-2. CX93011 Modem Hardware Signal Definitions.................................................................................................................. 3-4

Table 3-3. CX93011 Modem I/O Type Definitions............................................................................................................................... 3-6

Table 3-4. CX93011 Modem DC Electrical Characteristics ................................................................................................................. 3-6

Table 3-5. CX20548 LSD 16-Pin QFN Pin Signals .............................................................................................................................. 3-9

Table 3-6. CX20548 LSD Hardware Signal Definitions ..................................................................................................................... 3-10

Table 3-7. CX20548 LSD GPIO DC Electrical Characteristics............................................................................................................ 3-11

Table 3-8. CX20548 LSD AVDD and DVDD DC Electrical Characteristics......................................................................................... 3-11

Table 3-9. CX93011 Modem Operating Conditions........................................................................................................................... 3-12

Table 3-10. Absolute Maximum Ratings........................................................................................................................................... 3-12

Table 3-11. CX93011 Current and Power Requirements .................................................................................................................. 3-13

Table 3-12. Crystal Specifications..................................................................................................................................................... 3-14

Table 3-13. Clock Specifications....................................................................................................................................................... 3-14

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

viii Conexant Proprietary and Confidential Information 102635F

Document Revision History

Incorporated in Doc. No. 102635A – 102635E

Preliminary releases.

Incorporated in Doc. No. 102635F

Revised Section 2. 16, Table 3-11, and Fig ure 4-1.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 1-1

1. Introduction

1.1 Overview

The Conexant CSMxx V.92 Modem supports V.92 analog data modem operation and

14.4 kbps fax modem operation. In addition, the modem supports remote telephone

answering machine (TAM). The modem also supports V.44/V.42bis/MNP 5 data

compression for greater data throughput and V.42 LAPM/MNP2-4 error correction

protocol for increased data integrity and reliability. Table 1-1 lists the ordering

information.

The CSMxx device set consists of a CX93011 V.92/V.34/V.32bis Modem device in a

20-pin QFN and a CX20548 SmartDAA 4 Line Side Device (LSD ) in a 16- pi n QP N.

The CX93011 has a serial interface.

The CX93011 modem device integrates a microcontroller (MCU), a digital signal

processor (DSP), internal RAM, internal ROM, and a SmartDAA system side device

(SSD) onto a 20-pin QFN. Figure 1-1 illustrates the top-level modem interface

connection.

Conexant’s SmartDAA technology used in the SmartDAA 4 LSD eliminates the need for

bulky analog transformers, relays, and opto-isolators typically used in discrete DAA

implementations. The Sm artDAA 4 LSD operates without drawing power from the phone

line, unlike line-powered DAAs, and is therefore not subject to variations in line voltage

conditions. The SmartDAA 4 LSD also adds enhanced telephony extension features to

the modem’s operation and other functions such as Call Waiting detection, and Caller ID

decoding. Incorporating Conexant’s proprietary Digital Isolation Barrier (DIB) design

and other innovative DAA features, the SmartDAA architecture simplifies application

design and minimizes layout area to reduce design cost.

In TAM mode, enhanced 2-bit or 4-bit per sample coding schemes at 8 kHz sample rate

provide flexible format compatibility and allows efficient digital sto rage of voice/audio.

Also supported are 8-bit A-law, -law, and linear cod ing and IMA 4-bit ADPCM coding.

This mode supports applicatio ns such as digital telephone answering machine, voice

annotation, and recording from and playb a ck to the telephone line.

The modem operates by executing masked code from internal ROM. The modem features

internal RAM memory that enhances the modem's flexibility. The modem's internal

RAM can be used to load new co untry profiles, override existing country profiles or add

customized firmware code. An optiona l external serial NVRAM is supported. The

optional external NVRAM adds the co nvenience of permanent storage, just like internal

RAM, NVRAM can be used to store new country profiles, override existing ones or add

customized firmware code.

Small, low-profile packages, reduced voltage operation, and low power consumption

make this device set an ideal solution for embedded applications.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

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Table 1-1. CSMxx Modem Models and Functi ons

Model/Order/Part Numbers Supported Functions

Marketing Name Device Set

Order No.

Modem Device

[20-Pin QFN]

Part No.

Line Side Device (LSD)

[16-Pin QFN]

Part No.

V.92/V.90/ Data V.34 Data V.32bis Data,

V.17 Fax, TAM,

Worldwide

CSM92 DS92-CSM-11Z CX93011-11Z CX20548-11Z (Note 3) Y Y Y

CSM34 DS34-CSM-11Z CX93011-12Z CX20548-11Z (Note 3) — Y Y

CSM32bis DS32-CSM-11Z CX93011-13Z CX20548-11Z (Note 3) — — Y

Notes:

1. Supported functions (Y = Supported; — = Not supported).

2. All devices are lead-free (Pb-free) and RoHS-compliant. These devices are compatible with leaded reflow processes.

3. Device is marked 20548-A

Figure 1-1. CSMxx Modem Simplified Interface Diagram

CX93011 Modem

20-Pin QFN

MCU/DSP/

SmartDAA

Interface

DTE/Host

Interface

Serial

Interface

102635_001

RAM

TIP

RING

External

Discrete

Components

Telephone

Line

Digital Isolation

Barrier (DIB)

CX20548

SmartDAA 4

Line Side Device (LSD)

16-Pin QFN

Line Side

DIB

Interface

(LSDI) Codec Telephone

Line

Interface

DAA Hardware

ROM

Optional

NVRAM

28.224 MHz

27.000 MHz

Crystal orClock

Source

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 1-3

1.2 Features

 Modulations and protocols

 ITU-T V.92 (V.9 2 model)

 Modem-on-Hold (MOH)

 Quick connect (QC)

 PCM upstream

 V.90 (V.92 model)

 V.34 (V.92 and V.34 models)

 V.32bis, V. 3 2, V. 22bis, V.22, V.23 , V.21

 V.23 reverse, V.23 half-duplex

 Bell 212A/Bell 103

 V.29 FastPOS

 V.22bis fast co nnect

 V.80 Synchronous Access Mode

 Data compression and error correction

 V.44 data compression (V.92 model)

 V.42bis and MNP 5 data compression

 V.42 LAPM and MNP 2-4 error correction

 Fax modem send and receive rates up to 14.4 kbps

 V.17, V.29 , V. 27 ter, and V.21 channel 2

 EIA/TIA 578 Class 1 and T.31 Class 1.0

 Call Waiting (CW) detection and Type II Caller ID decoding during data mode

 Type I Caller ID (CID) decoding

 Telephony/TAM

 V.253 commands

 2-bit and 4-bit ADPCM, 4-bit IMA ADPCM, 8-bit and 16-bit linear PCM, and

8-bit -law and A-law PCM coding

 8 kHz sample rate

 Concurrent DTMF, ring, and Caller ID detection

 DTE/host interface

 Serial DTE interface

 Direct Mode

 Asynchro no us M ode

 No external memory required

 Sixty-three embedded and upgradeable country profiles

 Serial NVRAM interface for optional permanent country profile storage

 Embedded AT commands

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

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 SmartDAA

 Extension pick-up detection

 Digital line protection

 Line reversal detection

 Line-in-use detection

 Remote hang-up detection

 Worldwide compliance

 Selectable 28.224 MHz or 27.000 MHz frequency of opera tion

 Low power and voltage

 Single +3.3V supply

 Low power consumption mode

 +3.3V I/O level

 Compact, robust board design

 Small, low-profile modem packages

 SmartDAA and DIB technologies

 Reference desi gn sup po rt s 5 k V isolat i o n

 Small pac kages

 CX93011 Modem: 20-pin QFN

 CX20548 LSD: 16-pin QFN

1.2.1 Applications

 Set top boxes

 Point-of-Sale terminals

 ATM machines

 Metering terminals

 Video gam e consoles

 Internet applian ces

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

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1.3 Technical Overview

1.3.1 General Description

Modem operation, including dialing, call progress, telephone lin e interface, telephone

handset interface, and host DTE interface functions are supported and controlled through

the V.250 and V.253-compatible command set.

The OEM adds a crystal circuit, DIB components, telephone line interface, telephone

handset/telephony extension interface, and other supporting discrete components as

supported by the modem model (Table 1-1) and required by the application to complete

the system.

1.3.2 Embedded MCU Firmware

Embedded MCU firmware performs processing of gene ral modem contr ol , command

sets, data modem, error correction and data compression (ECC), worldwide, V.80, and

serial DTE host interface functions according to modem models (Table 1-1).

1.3.3 Operating Modes

1.3.3.1 Data/Fax Modes

Data modem modes perform complete handshake and data rate negotiations. Using

modem modulations to optimize modem configuration for line conditions, the modem

can connect at the highest data rate that the channel can support from 56 kbps down to

2400 bps with automatic fallback.`

In V.92 data modem mode (V.92 model), the modem can receive data from a digital

source using a V.92-compatible central site modem at line speeds up to 56 kbps. With

PCM upstream enabled, data transmission supports sending data at line speeds up to

48 kbps. When PCM upstream is disabled, data transmission supports sending data at

line speeds up to V.34 rates. This mode can fallback to V.34 mode and to lower rates as

dictated by line conditions.

The following modes in V.92 models are also supported when connected to a V.92-

compatible server supporting the feature listed .

 Quick connect, which allows quicker subsequent connection to a server using stored

line parameters obtained during the initial connection. The server must support quick

connect profiles.

 Modem-on-Hold, which allows detection and reporting of incoming phone calls on

the PSTN with enabled Call Waiting. If the incoming call is accepted by the user, the

user has a pre-defined amount of time of holding the data connection for a brief

conversation. The data connection resumes upon incoming call termination. The

server must support Modem-on-Hold functionality.

 PCM upstream, which boosts the upstream data rates between the user and V.92

server. A maximum of 48 kbps upstream rate is supported when connected to a V.92

server that supports PCM upstream.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

1-6 Conexant Proprietary and Confidential Information 102635F

In V.34 data modem mode (V.92 and V.34 models), the modem can operate in 2-wire,

full-duplex, asynchronous modes at line rates up to 33.6 kbps. Data modem modes

perform complete handshake and data rat e negotiatio ns. Using V.34 modu l a ti on to

optimize modem configuration for line conditions, the modem can connect at the highest

data rate that the channel can support from 33600 bps down to 2400 bps with automatic

fallback. Automode operation in V.34 is provided in accordance with PN3320 and in

V.32bis in accordance with PN2330. All tone and pattern detection functions required by

the applicable ITU or Bell standards are supported.

In V.32bis data modem mode, the modem can operate at line speeds up to 14.4 kbps.

In fax modem mode, the modem can operate in 2-wire, half-duplex, synchronous modes

and can support Group 3 facsimile send and receive speeds of 14400, 12000, 9600, 7200,

4800, and 2400 bps. Fax data transmission and reception performed by the modem are

controlled and monitored through the EIA/TIA-578 Fax Class 1, or T.31 Fax Class 1.0

command interface. Full HDLC formatting, zero insertion/deletion, and CRC

generation/checking are provided.

1.3.3.2 V.44 Data Compression

V.44 provides more efficient data compression than V.42bis that significantly decreases

the download time for the types of files associated with Internet use. This significant

improvement is most noticeable when browsing and searching the web since HTML text

files are highly compressible. (The improved performance amount varies both with the

actual format and with the content of individual pages and files.)

1.3.3.3 Synchronous Access Mode (SAM) - Video Conferencing

V.80 Synchronous Access Mode between the modem and the host/DTE is provided for

host-controlled communication protocols, e.g., H.324 video conferencing applications.

1.3.3.4 TAM Mode

TAM Mode features include 2-bit/4-bit ADPCM, 4-bit IMA ADPCM, 8-bit and 16-bit

linear PCM, and 8-bit -law and A-law PCM coding at 8 kHz sample rate. Tone

detection/ generation, call discrimination, and concurrent DTMF detection are also

supported.

TAM Mode is supported by four submodes:

 Online Voice Command Mode supports connection to the telephone line.

 Voice Receive Mode supports recording voice or audio data input from the telephone

line.

 Voice Transmit Mode supports playback of voice or audio data to th e telephone line.

 Full-duplex Receive and Transmit Mode.

1.3.3.5 Worldwide Operation

The modem operates in TBR21-compliant and other countries. Country-dependent

modem parameters for functions such as dialing, carrier transmit level, calling tone, call

progress tone detection, answer tone detection, blacklisting, caller ID, and relay control

are programmable.

SmartDAA technology allows a single PCB design and single BOM to be homologated

worldwide. Adv anced features such as extension pick-up detection, remote hang-up

detection, line-in-u se detection, and digital PBX line protection are supported.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 1-7

Country code IDs are defined by ITU-T T.35.

Internal ROM i ncludes default profil e s fo r 6 3 cou nt rie s i nc l udi n g TB R 2 1- compliant

profiles. An additional or modified country profile can be loaded into internal SRAM. A

duplicate country profile stored in internal SRAM will override the profile in internal

ROM firmware. Additional country profiles can be loaded into external NVRAM for

permanent storage. The default countries supported are listed in Table 1-2. Request

additional country prof iles from a Conexant Sales Office.

Table 1-2. Default Countries Supported

Country Country

Code Call Waiting Tone

Detection (CW)

Supported

On-Hook Type 1

Caller ID (CID)

Supported

Off-Hook Type 2

Caller ID (CID2)

Supported

Argentina 7

Australia 9 X X

Austria 0A X X

Belgium 0F X

Brazil 16 X

Bulgaria 1B

Canada 20 X X X

Chile 25 X

China 26 X X

Colombia 27

Croatia FA

Cyprus 2D

Czech Republic 2E

Denmark 31 X X

Egypt 36

Estonia F9

Finland 3C X X

France 3D X X X

Germany 42 X X

Greece 46 X

Hong Kong 50 X X X

Hungary 51

Iceland 52

India 53 X

Indonesia 54

Ireland 57 X X X

Israel 58 X

Italy 59 X X

Japan 00 X X X

Korea 61 X X

Kuwait 62

Lebanon 64

Luxembourg 69

Malaysia 6C X

Mexico 73

Morocco 77

Netherlands 7B X

New Zealand 7E X X

Norway 82 X X

Pakistan 84

Philippines 89

Poland 8A X

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Country Country

Code Call Waiting Tone

Detection (CW)

Supported

On-Hook Type 1

Caller ID (CID)

Supported

Off-Hook Type 2

Caller ID (CID2)

Supported

Portugal 8B X

Romania 8E

Russia B8

Saudi Arabia 98

Senegal 99

Singapore 9C X X X

Slovakia FB

Slovenia FC

South Africa 9F X

Spain A0 X X

Sri Lanka A1

Sweden A5 X X

Switzerland A6 X

Taiwan FE X X

Thailand A9

Tunisia AD

Turkey AE

UK B4 X X X

United Arab Emirates B3

Uruguay B7

USA B5 X X X

Reserved FD

1.3.4 Reference Designs

A reference design is available to minimize modem design time, reduce development

cost, and accelerate market entry. The part number for this design is: RD02-D390-001.

A design package is available in electronic form. This package includes schematics, bill

of materials (BOM), vendor part list (VPL), board layout files in Gerber and PADS

formats, and complete documentation.

1.4 Hardware Description

1.4.1 CX93011 Modem

The CX93011 modem includes a Microcontroller (MCU), a Modem Data Pump (MDP),

internal ROM, internal RAM, and SmartDAA interface functions.

The modem connects to host via a logical V.24 (EIA/TIA-232-E) serial DTE interface.

The modem MCU/DSP performs the command processing, host interface functions and

telephone line sign a l modu lation/demodulation which reduces computational load on the

host processor.

The SmartDAA Interface communicates with, and supplies power and clock to the LSD

through the DIB.

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1.4.2 Digital Isolation Barrier

The OEM-supplied Digital Isolation Barrier (DIB) electrically DC isolates the CX93011

from the LSD and telephone line. The modem is connected to a fixed digital ground and

operates with standard CMOS logic levels. The LSD is connected to a floating ground

and can tolerate high voltage input (compatible with telephone line and typical surge

requirements).

The DIB transformer couples power and clock from the CX93011 to the LSD.

The DIB data channel supports bidirectional half-duplex serial transfer of data, control,

and status information between the CX93011 and the LSD over two lines.

1.4.3 CX20548 SmartDAA Line Side Device

The CX20548 SmartDAA 4 Line Side Devi ce (LSD) includes a Line Side DIB Interface,

a coder/decoder (codec), and a Telephone Line Interface (TLI).

The Line Side DIB Interface comm unicates with, and receives power and clock from , the

SmartDAA 4 interface in the host side device (HSD) through the DIB transformer. The

clock signal passing through the transformer is rectified in the LSD and filtered using

external capacitors.

Information is transferred between the LSD and the HSD through the DIB transformer

using pulse width modulation

The TLI integrates DAA and direct telephone line interface functions and connects

directly to the line TIP and RING pins, as well as to external line protection components.

Direct LSD connection to TIP and RING allows real-tim e measurement of telephone line

parameters, such as the telephone central office (CO) battery voltage, individual

telephone line (co p per wi re ) r e si st ance, and all ows dy namic regulation of t he off- hoo k

TIP and RING voltage and total current drawn from the central office (CO). This allows

the modem to maintain compliance with U.S. and wo rldwide regulations.

1.5 Commands

The modem supports data modem and V.80 commands, and S Registers in accordance

with modem model opt i ons. See Doc. No. 102752 for a descript i o n of t he com mands.

Data Modem Operation. Data modem functions operate in response to the AT

commands wh en +FCL AS S=0. Default para meters support U.S./C anada operation.

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2. Technical Specifications

2.1 Serial DTE Interface Operation

2.1.1 Automatic Speed/Format Sensing

Command Mode and Data Mode. The modem can automatically determine the speed

and format of the data sent from the DTE. The modem can sense speeds of 300, 600,

1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400,

28800, 38400, 57600, and 115200 bps and the following data formats:

Parity Data Length

(No. of Bits) No. of

Stop Bits Character Length

(No. of Bits)

None 7 2 10

Odd 7 1 10

Even 7 1 10

None 8 1 10

Odd 8 1 11*

Even 8 1 11*

*11-bit characters are sensed, but the parity bit is stripped off during

data transmission in Normal and Error Correction modes.

The modem can speed sense data with mark or space parity and configures itself as

follows:

DTE Configuration Modem Configuration

7 mark 7 none

7 space 8 none

8 mark 8 none

8 space 8 even

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2.2 Establishing Data Modem Connections

2.2.1 Dialing

DTMF Dialing. DTMF dialing using DTMF tone pairs is supported in acco rdance with

ITU-T Q.23.

Pulse Dialing. Pulse dialing is supported in accordance with EIA/TIA-496-A.

Blind Dialing. The modem can blind dial in the absence of a dial tone if enabled by the

X0, X1, or X3 comm a nd.

2.2.2 Modem Handshaking Protocol

If a tone is not detected within the time specified in the S7 register after the last digit is

dialed, the modem aborts the call attempt.

2.2.3 Call Progress Tone Detection

Ringback, equipment busy, congested tone, warble tone, and progress tones can be

detected in accordance with the applicable standard.

2.2.4 Answer Tone Detection

Answer tone can be detect ed over the frequency ra n ge of 2 10 0 ± 4 0 Hz in ITU-T modes

and 2225 ± 40 Hz in Bell modes.

2.2.5 Ring Detection

A ring signal can be detected from a TTL-compatible 15.3 Hz to 68 Hz square wave

input.

2.2.6 Billing Protection

When the modem goes of f-hook to answer an incoming call, both transmission and

reception of data are prevented for 2 seconds to allow transmission of the billing tone

signal.

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2.2.7 Connection Speeds

The modem functions as a data modem when the +FCLASS=0 command is active.

Line connection can be selected using the +MS command. The +MS command selects

modulation, enables/disables automode, and selects minimum and maximum line speeds

(Table 2-1).

Table 2-1. +MS Command A utomode Connectivity

Modulation <carrier> Possible (<min_rx_rate>, <min_rx_rate>,

(<min_tx_rate>), and <max_tx_rate>) Rates (bps)

Bell 103 B103 300

Bell 212 B212 1200 Rx/75 Tx or 75 Rx/1200 Tx

V.21 V21 300

V.22 V22 1200

V.22bis V22B 2400 or 1200

V.23 V23C 1200

V.32 V32 9600 or 4800

V.32bis V32B 14400, 12000, 9600, 7200, or 4800

V.34/V.90 upstream1 V34/V90 33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800,

14400, 12000, 9600, 7200, 4800, or 2400

V.90 downstream2 V90 56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,

45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000,

34667, 33333, 32000, 30667, 29333, 28000

V.92 downstream2 V92 56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,

45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000,

34667, 33333, 32000, 30667, 29333, 28000

V.92 upstream2 V92 48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667,

37333, 36000, 34667, 33333, 32000, 30667, 29333, 28000,

26667, 25333, 24000

Notes:

1. V.92 and V.34 models.

2. V.92 models

2.2.8 Automode

Automode detection can be enabled by the +MS command to allow the modem to

connect to a remote modem in accordance with draft PN-3320 for V.34 (Table 2-1).

2.3 Data Mode

Data mode exists when a telephone line connection h as been established between

modems and all handshaking has been completed.

2.3.1 Speed Buffering (Normal Mode)

Speed buffering allows a DTE to send data to, and receive data from, a modem at a speed

different than the line speed. The modem supports speed buffering at all line speeds.

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2.3.2 Flow Control

DTE-to-Modem Flow Control. If the modem-to-line speed is less than the DTE-to-

modem speed, the modem supports XOFF/XON or RTS/CTS flow control with the DTE

to ensure data integrity.

2.3.3 Escape Sequence Detection

The +++ escape sequence can be used to return control to the command mode from the

data mode. Escape sequence detection is disabled by an S2 Register value greater than

127.

2.3.4 BREAK Detection

The modem can detect a BREAK signal from either the DTE or the remote modem. The

\Kn command determines the modem response to a received BREAK signal.

2.3.5 Telephone Line Monitoring

GSTN Cleardow n (V. 9 2, V.90, V.34, V.32 bi s, V.3 2 ). Upon recei ving GSTN Cleardown

from the remote modem in a non-error correcting mode, the modem cleanly terminates

the call.

Loss of Carrier (V.22bis and Below). If carrier is lost for a time greater than specified

by the S10 register, the modem disconnects.

2.3.6 Fall Forward/Fallback (V.92/V.90/V.34/V.32bis/V.32)

During initial handshak e, the modem will fallback to the optimal line conn ection within

V.92/V.90/V.34/V.32bis/V.32 mode depending upon signal quality if automod e is

enabled by the +MS or N1 com m a nd.

When connected in V.92/V.90/V.34/V.32bis/V.32 mode, the modem will fall forward or

fallback to the optimal line speed within the current modulation depending upon signal

quality if fall forward/fallback is enabled by the %E2 co mmand.

2.3.7 Retrain

The modem may lose synchronization with the received line signal under poor or

changing line conditions. If this occurs, retraining may be initiated to attempt recovery

depending on the type of connection.

The modem initiates a retrain if line quality becomes unacceptable if enabled by the %E

command. The modem continues to retrain until an acceptable connection is achieved, or

until 30 seconds elapse resulting in line disconnect.

2.3.8 Programmable Inactivity Timer

The modem disconnects from the line if data is not sent or received for a specified length

of time. In normal or error-correction mode, this inactivity ti mer is reset when data is

received from either the DTE or from the line. This timer can be set to a value between 0

and 255 seconds by using register S30 . A value of 0 disables the inactivity timer.

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2.3.9 DTE Signal Monitoring (Serial DTE Interface Only)

DTR#. When DTR# is asserted, the modem responds in accordance with the &Dn and

&Qn commands.

RTS#. RTS# is used for flow control if enabled by the &K command in normal or error-

correction mode.

2.3.10 Call Progress Speaker Interface

A digital speaker output (DSPKOUT) is supported. DSPKOUT is a square wave output

in Data mode used for call progress or carrier monitoring. This output can be optionally

connected to a low-cost on-board speaker, e.g., a sounducer, or to an analog speaker

circuit.

2.3.11 Serial EEPROM Interface

The 20-pin QFN supports a 2-line serial interface to an optional serial EEPROM.

The EEPROM can hold information such as firmware customization, and country code

parameters. Data stored in EEPROM takes precedence over the factory default settings.

A serial EEPROM is required only if additional storage is required for more country

profiles or customized firmware code.

The EEPROM size can range from 2 Kb (256 x 8) to 256 Kb (32K x 8). A 2 Kb

EEPROM must be 100 kHz or 400 kHz; higher capacity EEPROMs must be 400 kHz.

2.4 V.92 Features (V.92 Model)

Modem-on-Hold, quick connect, and PCM upstream are only available when connecting

in V.92 data mode. V.92 features are only available when the server called is a V.92

server that supports th at particular feature.

2.4.1 Modem-on-Hold

The Modem-on-Hold (MOH) function enables the modem to place an Internet data

connection on hold while using the same line to accept an incoming or place an outgoing

voice call. This feature is available only with a connection to a server supporting MOH.

MOH can be executed through either of two methods:

 One method is to enable MOH through the +PMH command. With Call Waiting

Detection (+PCW command) enabled, an incoming call can be detected while on-

line. Using a string of commands, the modem negotiates with the server to place the

data connection on hold while the line is released so that it can be used to conduct a

voice call. Once the voice call is completed, the modem can quickly renegotiate with

the server back to the original data call.

 An alternative method is to use communications software that makes use of the

Conexant Modem-on-Hold drivers. Using this method, the software can detect an

incoming call, place the data connection on hold, and switch back to a data

connection.

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2.4.2 Quick Connect

The quick connect functio n enables the modem to shorten the connect time of subsequent

calls to a server supporting quick connect. The quick connect feature is supported by the

+PQC command.

2.4.3 PCM Upstream

PCM upstream boosts the upstream data rates between the user and ISP to reduce upload

times for large files and email attachments. A maximum of 48 kbps upstream rate is

supported with PCM upstream enabled, in contrast to a maximum of 32.2 kbps upstream

rate with PCM upstream not enabled. PCM upstream is supported by the +PCM

command. PCM upstream is disabled by default.

2.5 Error Correction and Data Compression

2.5.1 V.42 Error Correction

V.42 supports two methods of error correction: LAPM and, as a fallback, MNP 4. The

modem provides a detection and negotiation technique for determining and establishing

the best method of error correction between two modems.

2.5.2 MNP 2-4 Error Correction

MNP 2-4 is a data link protocol that uses error correction algorithms to ensure data

integrity. Supporting stream mode, the modem sends data frames in varying lengths

depending on the amount of time between characters coming from the DTE.

2.5.3 V.44 Data Compression

V.44 data compression encodes pages and files associated with Web pages more

efficiently than V.42bis. These files include WEB pages, graphics and image files, and

document files. V.44 can provide an effective data throughpu t rate up to DTE rate for a

56-kbps connection. The improved performance amount varies both with the actual

format and with the content of individual pages and files.

2.5.4 V.42bis Data Compression

V.42bis data compression mode, enabled by the %Cn command or S46 register, operates

when a LAPM connection is established.

The V.42bis data compression employs a “string learning” algorithm in which a string of

characters from the DTE is encoded as a fixed length codeword and stored in a

dictionary. The dictionary is dynamically updated during normal operation.

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2.5.5 MNP 5 Data Compression

MNP 5 data compression mode, enabled by the %Cn command, operates during an MNP

connection.

In MNP 5, the modem increases its throu ghput by compressing data into tokens before

transmitting it to the remote modem, and by decompressing encoded received data before

sending it to the DTE.

2.6 Voice/Audio Mode

Voice and audio functions are supported by the Voice Mode. Voice Mode includes four

submodes: Online Voice Command Mode, Voice Receive Mode, Voice Transmit Mode

and Full-Duplex Receive and Transmit Mode.

2.6.1 Online Voice Command Mode

This mode results from the connection to the telephone line or a voice/audio I/O device

(e.g., microphone, speaker, or handset) through the use of the +FCLASS=8 and +VLS

commands. After mode entry, AT commands can be entered without aborting the

connection.

2.6.2 Voice Receive Mode

This mode is entered when the +VRX command is active in order to record voice or

audio data input at the RIN pin, typically from a microphone/handset or the telephone

line.

Received analog voice samples are converted to digital form and compressed for reading

by the host. AT commands control the codec bits-per-sample rate.

Received analog mono audio samples are converted to digital form and formatted into

8-bit unsigned linear PCM format for reading by the host. AT commands control the bit

length and sampling rate. Concurrent DTMF/tone detection is available at the 8 kHz

sample rate.

2.6.3 Voice Transmit Mode

This mode is entered when the +VTX command is active in order to playback voice or

audio data to the TXA output, typically to a speaker/handset or to the telephone line.

Digitized voice data is decompressed and converted to analog form at the original

compression quantization sample-per-bits rate then output to the TXA output.

Digitized audio data is converted to analog form then output to the TXA output.

2.6.4 Full-Duplex Receive and Transmit Mode

This mode is entered when the +VTR command is active in order to concurrently receive

and transmit voice.

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2.6.5 Audio Mode

The audio mode enables the host to transmit and receive 8-bit audio signals. In this mode,

the modem directly accesses the internal analog-to-digital (A/D) converter (ADC) and the

digital-to-analog (D/A) converter (DAC). Incoming analog audio signals can then be

converted to digital format and digital signals can be converted to analog audio output.

2.6.6 Tone Detectors

The tone detector signal path is separate from the main received signal path thus enabling

tone detection to be independent of the configuration status. In Tone Mode, all three tone

detectors are operational.

2.7 V.80 Synchronous Access Mode (SAM)

V.80 Synchronous Access Mode between the modem and the host/DTE is provided for

host-controlled communication protocols, e.g., H.324 video conferencing applications.

Voice-call-first (VCF) before switching to a videophone call is also supported.

2.8 Telephony Extensions

The following telephony extension features are supported and are typically implemented

in designs for set-top box applications to enhance end-user experience:

 Line-in-use detect ion

 Extension pick-up detection

 Remote hang-up detection

The telephony extension features are enabled through the -STE command. The -TTE

command can be used to adjust the voltage thresholds for the telephony extension

features.

2.8.1 Line-in-Use Detection

The line-in-use detection feature can stop the modem from disturbing the phone line

when the line is already being us ed. When an attempt is made to dial using ATDT and the

phone line is in use, the modem will not go off hook and will respond with the message

“LINE IN USE”.

2.8.2 Extension Pick-up Detection

The extension pick-up detection feature (also commonly referred as PPD or Parallel

phone detection) allows the modem to detect when another telephony device (i.e., fax

machine, phone, satellite/cable box) is attempting to us e the phone line. When an

extension pick-u p has been detected, the modem will go on-hook and respond with the

message “OFF-HOOK INTRUSION”.

This feature can be used to quickly drop a modem connection in the event when a user

picks up an extension phone line. For example, this feature allows set top boxes with an

integrated CSMxx modem to give normal voice users the highest priority over the

telephone line.

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2.8.3 Remote Hang-up Detection

The remote hang-up detection feature will cause the modem to go back on-hook and

respond with the message “LINE REVERSAL DETECTED” during a data connection

when the remote modem is disconnected for abnormal termination reasons (remote phone

line unplugged, remote server/modem shutdown).

2.9 Point-of-Sales Support

Point-of-Sales (POS) terminals usually need to exchange a small amount of data in the

shortest amount of time. Low speed modulations such as Bell212A or V.22 are still

mainly used in POS applications . Additionally, new non-standard sequences have been

developed to better support POS applications.

Industry standard and shortened answer tone B103 and V.21 are supported, as well as

FastPOS (V.29) and V.22 FastConnect. POS terminal modulations are supported by the

$F command.

2.10 Fax Class 1 and Fax Class 1.0 Operation

Facsimile functions operate in response to fax class 1 commands when +FCLASS=1 or to

fax class 1.0 commands when +FCLASS=1.0.

In the fax mode, the on-line behavior of the modem is different from the data (non-fax)

mode. After dialing, modem operation is controlled by fax commands. Some AT

commands are still valid but may operate differently than in data modem mode.

Calling tone is generated in acco rdance with T.30.

2.11 Tone Detectors

The modem is equipped with three tone detectors with separate signal paths from the

main received signal path thus enabling tone detection to be independent of the

configuration status.

2.12 Call Waiting Tone Detection

Call Waiting tones can be detected when in V.92, V.90, V.34, and V.32bis data modes.

2.13 Caller ID

Both Type I Caller ID (On-Hook Caller ID) and Type II Caller ID (Call Waiting Caller

ID) are supported for U.S. and many other countries (see Section 2.14). Both types of

Caller ID are enabled/disabled us ing the +VCID command. Call Waiting Tone detection

must be enabled using the +PCW command to detect and decode Call Waiting Caller ID.

When enabled, caller ID info rmation (date, time, caller code, and name) can be passed to

the DTE in formatted or unformatted form. Inquiry support allows the current caller ID

mode and mode capabilities of the modem to be retrieved from the modem.

Type II Caller ID (Call Waiting Caller ID) detection operates only during data mode in

V.92, V.90, V.34, V.32bis, or V.32.

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2.14 Worldwide Country Support

Internal modem firmware suppor ts 63 country profiles (see Table 1-2). These country

profiles include the following country-dependent parameters:

 Dial tone detection levels and frequency ranges.

 DTMF dialing parameters: Transmit output level, DTMF signal duration, and DTMF

interdigit interval.

 Pulse dialing parameters: Make/break times, set/clear times, and dial codes are

programmable.

 Ring detection frequency rang e.

 Type I and Type II Caller ID detection are supported for many countries. Contact

your local Conexant sales office for additional country support.

 Blind dialing e nabl ed/disable.

 Carrier transmit level. The maximum, minimum, and default values can be defined to

match specific country and DAA requirements.

 Calling tone is generated in acco rdance with V.25. Calling tone may be toggled

(enabled/disabled) by inclusion of a “^” character in a dial string. It may also be

disabled.

 Frequency and cadence of tones for busy, ringback, congested, warble, dial tone 1,

and dial tone 2.

 Answer tone det ect i on peri o d .

 Blacklist parameters. The modem can operate in accordance with requirements of

individual countries to prevent misuse of the network by limiting repeated calls to

the same number when previous call attempts have failed. Call failure can be

detected for reasons such as no dial tone, number busy, no answer, no ringback

detected, voice (rather than modem) detected, and key abort (dial attempt aborted by

user). Actions resulting from such failures can include specification of minimu m

inter-call delay, extended delay between calls, and maximum numbers of retries

before the number is permanently forbidden ("blacklisted").

The country profiles may be altered or customized by modifying the country-dependent

parameters. Additional profiles may also be included. Additional and modified country

profiles are supported by internal SRAM.

Please contact an FAE at the local Conexant sales office for additional and modified

country profile support.

2.15 Diagnostics

Diagnostics are performed in response to test commands.

Analog Loopback (&T1 Command). Data from the local DTE is sent to the modem,

which loops the data back to the local DTE.

Analog Loopback (&T1 Command). Data from the local DTE is sent to the modem,

which loops the data back to the local DTE.

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2.16 Low Power Modes

The modem enters a low power mode when no line connection ex ists and no host activity

occurs for the period of time specified in the S24 register. The modem supports four low

power modes: Idle Mode, Sleep Mode, Deep Sleep Mode, and Stop Mode. The low

power mode entered depends on the setting of the –SLP command .

2.16.1 Idle Mode

In Idle mode, the CPU and SPX clocks stop, and the SSD clock runs at low frequency.

The modem can detect and qualify ring signals and process AT commands. The modem

returns to normal mode upon receiving an AT command or receiving a qualified ring.

2.16.2 Sleep Mode

In Sleep mode, the SPX clock stops, and the CPU and SSD clocks run at low frequency.

The modem can detect and qualify ring signals. The modem cannot process AT

commands. The modem can be awakened by the host sending a single (any) character

(typically followed by an AT command) or by the modem receiving a qualified ring.

2.16.3 Deep Sleep Mode

In Deep Sleep mode, the SPX and SSD clocks stop, and the CPU clock runs at low

frequency. The modem can detect and qualify ring signals. The modem cannot process

AT commands. The modem can be awakened by the host sending a single (any) character

(typically followed by an AT command) or by the modem receiving a qualified ring.

2.16.4 Stop Mode

In Stop mode, the CPU, SPX and SSD clocks stop. The modem cannot process AT

commands and cannot detect and qualify ring signals. The modem can be awakened by

the host sending a single (any) character (typically followed by an AT command).

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3. Hardware Interface

3.1 CX93011 Modem Hardware Interface Signals

3.1.1 CX93011 Modem Interface Signal Summary

3.1.1.1 LSD Interface (Through DIB)

The DIB interface signals are:

 DIBP

 DIBN

3.1.1.2 Call Progress Speaker Interface

The call progress speaker interface signal is:

 Digital speaker output (DSPKOUT); output

3.1.1.3 Clock Select Interface

The clock select interface signal is:

 Clock Select (CLKSEL); input

3.1.1.4 Serial EEPROM Interface

The 2-line serial interface signals to an optional serial EEPROM are:

 Bidirectional Data input/output (NVM DA TA)

 Clock output (NVMCLK)

3.1.1.5 Serial DTE Interface and Indicator Outputs

The supported DTE interface signals are:

 Serial Transmit Data input (TXD#)

 Serial Receive Data output line (RXD#)

 Clear to Send output (CTS#)

 Received Line Signal Detector output (RLSD#)

 Ring Indicat o r output (RI#)

 Data Terminal Ready control input (DTR#)

 Request to Send control input (RTS#)

 Data Set Ready output (DSR#)

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

3-2 Conexant Proprietary and Confidential Information 102635F

3.1.2 CX93011 Modem Pin Assignments and Signal Definitions

CX93011 Modem hardware inter face signals are shown by major interface in Figure 3-1,

are shown by pin number in Figure 3-2, a n d are li st e d by pi n number in Table 3-1.

CX93011 Modem hardware inter face signals are defined in Table 3-2.

Figure 3-1. CX93011 Modem Hardware Interface Signals

XTLI

XTLO

TXD#

RXD#

CTS#

RLSD#

RI#

DTR#

RTS#

NVMCLK/CLKSEL

NVMDATA

RESET#

LPO

SERIAL HOST

INTERFACE

DIBN

DIBP

DSPKOUT

VDD_CORE

VDD

GND

PADDLE (GND)

102635_003

CX93011

Modem

20-Pin QFN

DIGITAL ISOLATION

BARRIER (DIB)

RESET CIRCUIT

SPEAKER CIRCUIT

+3.3V 240K

+3.3V

28.224 OR 27.000 MHZ

CRYSTAL OR CLOCK OSCILLATOR

FREQUENCY SELECT CIRCUIT

SERAIL EEPROM

+1.2V DECOUPLING

NOTE:

PADDLE (GND), indicated as Pin 21, is a conductive surface on the bottom of the device and must be

connected to system side digital ground.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 3-3

Figure 3-2. CX93011 Modem 20-Pin QFN Pin Signals

102635_004

CX93011

VDD_CORE

LPO

VDD

NVMDATA

DIBP

RXD#

TXD#

VDD

NVMCLK/CLKSEL

RTS#

CTS#

DTR#

RLSD#

RI#

DIBN

RESET#

XTLO

XTLI

DSPKOUT

GND

NOTE:

PADDLE (GND) is a conductive surface on the bottom of the

device and is indicated as pin 21.

Table 3-1. CX93011 Modem 20-Pin QFN Pin Signals

Pin No. Signal Name Pin No. Signal Name

1 RXD# 11 DIBP

2 TXD# 12 NVMDATA

3 VDD 13 VDD

4 NVMCLK/CLKSEL 14 LPO

5 RTS# 15 VDD_CORE

6 CTS# 16 GND

7 DTR# 17 DSPKOUT

8 RLSD# 18 XTLI

9 RI# 19 XTLO

10 DIBN 20 RESET#

21 PADDLE (GND)

Note:

PADDLE (GND) is a conductive surface on the bottom of the device and is indicated as pin 21.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

3-4 Conexant Proprietary and Confidential Information 102635F

Table 3-2. CX93011 Modem Hardware Signal Definitions

Label Pin I/O I/O

Type Signal Name/Description

System

XTLI

XTLO 18

19 I

O Ix

Ox Crystal In and Crystal Out. If an external 27 or 28.224 MHz crystal

circuit is used instead of an external clock circuit, connect XTLI and

XTLO to the external crystal circuit. When an external clock circuit is

used, connect the clock signal to XTLI and leave XTLO open. (See

CLKSEL pin description.)

NVMCLK/CLKSEL 4 I Ipu/O2 Clock Frequenc y Select (CLKSE L). Clock frequency is selected by

CLKSEL during reset processing. Leave open for 28.224 MHz operation;

connect pin to digital ground (GND) through 10 k for 27.000 MHz

operation.

This signal is multiplexed with NVMCLK.

RESET# 20 I Ipu/O2 Reset. The active low RESET# input resets the modem logic and clears

the internal SRAM.

RESET# low holds the modem in the reset state; RESET# going high

releases the modem from the reset state. After application of VDD,

RESET# must be held low for at least 15 ms after the VDD power

reaches operating range. The modem device set is ready to use 25 ms

after the low-to-high transition of RESET#.

VDD_CORE 15 O PWR +1.2V Internal Core Voltage Filter. Internal +1.2 V core voltage for

decoupling. Do not connect this pin to an external +1.2 V power supply.

VDD 3, 13 O PWR Digital and I/O Circuits Supply Voltage. Connect this pin to an external

+3.3 V power supply.

GND 16 I GND Digital Ground. Connect to digital ground (GND).

PADDLE (GND) 21 G GND Paddle Ground. Connect to digital ground (GND).

LPO 14 I

Low Power Oscillator. Connect to +3.3V through 240 K.

Speaker Interface

DSPKOUT 17 O Ipd/O2 Modem Speaker Digital Output. The DSPKOUT digital output reflects

the received analog input signal digitized to TTL high or low level by an

internal comparator.

DIB Interface

DIBN 10 O Odpc DIB Negative. Provides clock and power to the LSD, and transfers data,

control and status information between the SSD and LSD. Connect to

DIB transformer primary winding terminal.

DIBP 11 O Odpc DIB Positive. Provides clock and power to the LSD and transfers data,

control and status information between the SSD and LSD. Connect to

DIB transformer primary winding terminal.

NVRAM Interface

NVMCLK/CLKSEL 4 I/O Ipu/O2 NVRAM Clock (NVMCLK). During normal operation, NVMCLK/CLKSEL

output high enables the EEPROM. Connect to EEPROM SCL pin.

This signal is multiplexed with CLKSEL.

NVMDATA 12 I/O Ipu/O2 NVRAM Data. The NVMDATA pin supplies a serial data interface to the

EEPROM. Connect to EEPROM SDA pin and to +3.3V through 10 K.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 3-5

Table 3-2. CX93011 Modem Hardware Signal Definitions (Continued)

Label Pin I/O I/O

Type Signal Name/Description

V.24 (EIA/TIA-232-E) DTE Serial Interface

TXD# 2 I Ipu/O2 Transmitted Data (EIA BA/ITU-T CT103). The DTE uses the TXD# line

to send data to the modem for transmission over the telephone line or to

transmit commands to the modem.

RXD# 1 O Ipu/O2 Received Data (EIA BB/ITU-T CT104). The modem uses the RXD# line

to send data received from the telephone line to the DTE and to send

modem responses to the DTE. During command mode, RXD# data

represents the modem responses to the DTE.

CTS# 6 O Ipu/O2 Clear To Send (EIA CB/ITU-T CT106). CTS# output ON (low) indicates

that the modem is ready to accept data from the DTE. In error correction

or normal mode, CTS# is always ON (low) unless RTS/CTS flow control

is selected by the &Kn command.

RLSD# 8 O Ipu/O2 Received Line Signal Detector (EIA CF/ITU-T CT109). During normal

operation, when AT&C0 command is not in effect, RLSD# output is ON

when a carrier is detected on the telephone line or OFF when carrier is

not detected.

RI# 9 O Ipu/O2 Ring Indicator (EI A CE/ITU-T CT125). RI# output ON (low) indicates the

presence of an ON segment of a ring signal on the telephone line.

DTR# 7 I Ipu/O2 Data Terminal Ready (EIA CD/ITU-T CT108). The DTR# input is turned

ON (low) by the DTE when the DTE is ready to transmit or receive data.

DTR# ON prepares the modem to be connected to the telephone line,

and maintains the connection established by the DTE (manual

answering) or internally (automatic answering). DTR# OFF places the

modem in the disconnect state under control of the &Dn and &Qn

commands.

RTS# 5 I Ipu/O2 Request To Send (EIA CA/ITU-T CT105). RTS# input ON (low)

indicates that the DTE is ready to send data to the modem. In the

command state, the modem ignores RTS#.

The modem ignores RTS# unless RTS/CTS flow control is selected by

the &Kn command.

Note:

I/O Types: See Table 3-3.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

3-6 Conexant Proprietary and Confidential Information 102635F

3.1.3 CX93011 Modem Electrical Characteristics

CX93011 I/O types are defined in Table 3-3.

CX93011 DC electrical characteristics are listed in Table 3-4.

Table 3-3. CX93011 Modem I/O Type Definitions

I/O Type Description

Idd/Odd Digital input/output, DIB data transceiver

Ix/Ox I/O, wire

Ipd/O2 Digital input, 120 k pull-down / Digital output, 2 mA

Ipu/O2 Digital input, 120 k pull-up / Digital output, 2 mA

Ippu/O2 Digital input, Programmable 120 k pull-up / Digital output, 2 mA

Odpc Digital output with adjustable drive, DIB clock and power

Rx Oscillator Pad, place 120 k resistor from pad to VDD

PWR Power

GND Ground

NOTES:

1. See DC characteristics in Table 3-4.

2. I/O Type corresponds to the device Pad Type. The I/O column in signal interface tables refers to signal I/O direction used in

the application.

Table 3-4. CX93011 Modem DC Electrical Characteristics

Parameter Symbol Min. Max. Units Test Conditions

Input Voltage Low VIL 0 0.3 *VDD V

Input Voltage High VIH 0.7 * VDD VDD V

Input Current (no Pull-Down

or Pull-Up) IIL -1 +1 uA OEN = 1

Input Current (Pull-Down) IPD +6 +30 uA VIN = VDD

Input Current (Pull-Up) IPU -300 -60 uA VIN = GND

Output Voltage Low VOL 0 0.4 V IOL = +2 mA

Output Voltage High VOH VDD-0.4 VDD V IOL = -2 mA

Output Impedance Z 25 95 

Pull-Up Resistance Rpu 120 500 k VIN = GND

Pull-Down Resistance Rpd 120 500 k VIN = VDD

Test Conditions unless otherwise stated: VDD = +3.3V ± 5%; TA = -10°C to 70°C; external load = 50 pF.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 3-7

3.2 CX20548 LSD Hardware Pins and Signals

3.2.1 General

3.2.1.1 Host Side Device (HSD) Interface (Through DIB)

The DIB interface signals are:

 DIB Positive (DIBP, pin 14); input/output

 DIB Negative (D IB N, pin 16); input / output

3.2.1.2 Power and Ground

The power and ground signals are:

 Unregulated Power Output (PWR, pin 15)

 Regulated Digital Power Output (DVDD, pin 1)

 Regulated Analog Power Output (AVDD, pi n 2)

 Analog Ground (PADDLE [AGND]); Analog ground

3.2.1.3 Telephone Line Interface

The telephone line interface signals are:

 RING AC Coupled (RAC, pin 4); input

 TIP AC Couple d (TAC, pin 5); input

 Electronic Inductor Capacitor (EIC, pin 11)

 Electronic Ind ucto r Output (EIO, pi n 1 0)

 Electronic Inductor Feedback (EIF, pin 9)

 Receive Analog Input (RXI, pin 6); input

 Transmit Output (TXO, pin 8); outpu t

 Transmit Feedback (TXF, pin 7); input

3.2.1.4 Voltage References

There is on reference voltage pin:

 Output Middle (Center) Reference Voltage (VC, pin 3); output for decoupling

3.2.1.5 General Purpose Input/Output

There is one unassigned general purpose input/output pin:

 General Purpose Input/Output (GPIO , pin 13); input/output

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

3-8 Conexant Proprietary and Confidential Information 102635F

3.2.2 Pin Assignments and Signal Definitions

CX20548 LSD hardware interface signals are shown by major interface in Fi gu re 3- 3, are

shown by pin n umber in Figure 3-4, and are listed by pin number in Table 3-5.

Note: Pin 17 is shown in Figure 3-3 to ensure that the PADDLE is considered when

laying out the print ed circui t board. The PADDLE is the analo g gr oun d pi n of

the CX20548 device and must be connected to LSD analog ground

(AGND_LSD) when the CX20548 is populated in a PCB.

CX20548 LSD hardware interface signals are defined in Table 3-6.

CX20548 LSD GPIO DC characteristics are specified in Table 3-7.

CX20548 LSD AVDD DC characteristics are specified in Table 3-8.

Figure 3-3. CX20548 LSD Hardware Interface Signals

RAC

TAC

EIC

EIO

EIF

RXI

TXO

TXF

GPIO

102596_007

CX20548

SmartDAA 4

Line Side

Device

(LSD)

16-Pin QFN

Electronic

Inductor, Off-

Hook, Pulse

Dial, and TIP

and RING VI

Control

AGND_LSD

Safety

and EMI

Protection

AGND_LSD

C844

Receive

Coupling

Impedance

Matching

and

Transmitter

DIBN

DIBP

TEST

DVDD

PWR+

AVDD

PADDLE (AGND)

C828

AGND_LSD

DIGITAL

ISOLATION

BARRIER

(DIB)

DIBN

DIBP

Telephone

Line

Connector

TIP

RING

C852

C850

NOTES:

1. Consult applicable reference design for exact component

placement and values, and for layout guidelines.

2. The PADDLE (indicated as Pin 17) is the analog ground pin of the

CX20548 device and must be connected to LSD analog ground (AGND_LSD)

when the CX20548 is populated in a printed circuit board (PCB).

C862

C870

AGND_LSD

R802

R804

R854

AGND_LSD

C830

T802

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 3-9

Figure 3-4. CX20548 LSD 16-Pin QFN Pin Signals

CX20548

DVDD

AVDD

RAC

TAC

RXI

TXF

TXO

TEST

EIC

EIO

EIF

DIBN

PWR

DIBP

GPIO

102596_008

The PADDLE, a co nnective surface located on the

bottom of the package and referred to as pin 17, is

connected int ernally to analog ground (AGND).

Table 3-5. CX20548 LSD 16-Pin QFN Pin Signals

Pin Signal Label Pin Signal Label

1 DVDD 9 EIF

2 AVDD 10 EIO

3 VC 11 EIC

4 RAC 12 TEST

5 TAC 13 GPIO

6 RXI 14 DIBP

7 TXF 15 PWR

8 TXO 16 DIBN

17 PADDLE (AGND)

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

3-10 Conexant Proprietary and Confidential Information 102635F

Table 3-6. CX20548 LSD Hardware Signal Definitions

Label Pin I/O I/O Type Signal Name/Description

System Interface Signals

PWR 15 PWR PWR Unregulated Power Output. Unregulated power output from the internal

rectifier, connect to AGND_LSD through C870.

VC 3 REF REF Output Middle Reference Voltage. Connect to AGND_LSD through

C844, which must be placed close to pin 3. Use a short path and a wide

trace to AGND_LSD pin.

AVDD 2 PWR PWR Analog Power Output. Provides external connection point for

decoupling. (AVDD is routed internally to LSD anal og circuits.). Connect

to AGND_LSD through C828. C828 must be placed close to pins 2.

DVDD 1 PWR PWR Digital Power Output. Provides external connection point for

decoupling. Connect to AGND_LSD through C830. Place C830 near

pin 1.

PADDLE

(AGND) 17 AGND_LSD AGND_LSD

Paddle Analog Ground. The conductive surface located on the bottom

of the package and referred to as pin 17 is connected internally to device

analog ground. Connect to AGND_LSD.

DIB Interface Signals

DIBP 14 I/O I/O DIB Positive. Positive terminal of DIB, connect to secondary of DIB

transformer.

DIBN 16 I/O I/O DIB Negative. Negative terminal of DIB, connect to secondary of DIB

transformer.

TIP and RING Interface Signals

RAC

TAC 4

5 I

I Ia

a RING AC Coupled and TIP AC Coupled. Un-rectified voltage from

telephone line used to detect ring.

Connect RAC to the diode bridge AC node (RING) through R802

(connects to pin 4).

Connect TAC to the diode bridge AC node (TIP) through R804 (connects

to pin 5).

EIC 11 O Oa Electronic Inductor Capacitor. Electronic inductor filtering capacitor.

Connect to AGND_LSD through C858.

EIO 10 O Oa Electronic Inductor Output. Calculated voltage is applied to this output

to control off-hook and DC VI mask operation. Connect to base of Q804

through R836.

EIF 9 I Ia Electronic Inductor Feedback. Connect to emitters of Q806 and Q808

through R830 and R834, respectively.

RXI 6 I Ia Receive Analog Input. Receiver operational amplifier inverting input.

AC coupled to the Bridge_CC node through R810 (connects to pin 6)

and C810 in series. R810 and C810 must be placed very close to pin 6.

The length of the PCB trace connecting R810 to the RXI pin must be

kept at an absolute minimum.

TXO 8 O Oa Transmit Output. Outputs transmit signal and impedance matching

signal; connect to base of transistor Q802.

TXF 7 I Ia Transmit Feedback. Connect to emitter of transistor Q802.

Not Used

GPIO 1 I/O It/Ot12 General Purpose I/O. Leave open if not used.

Notes:

1. I/O types*:

Ia Analog input

It Digital input*

Oa Analog output

Ot12 Digital output*

AGND_LSD Isolated LSD Analog Ground (isolated from the host system ground)

*See Section CX20548 LSD GPIO DC Electrical Characteristics (Table 3-7).

2. Refer to applicable reference design for exact component placement and values.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 3-11

Table 3-7. CX20548 LSD GPIO DC Electrical Characteristics

Parameter Symbol Min. Typ. Max. Units Test Conditions

Input Voltage VIN -0.30 – 3.465 V DVDD = +3.465V

Input Voltage Low VIL – – 1.0 V

Input Voltage High VIH 1.6 – – V

Output Voltage Low VOL 0 – 0.33 V

Output Voltage High VOH 2.97 – – V

Input Leakage Current – -10 – 10 µA

Output Leakage Current (High Impedance) – -10 – 10 µA

GPIO Output Sink Current at 0.33 V maximum – 2.4 – - mA

GPIO Output Source Current at 2.97 V

minimum – 2.4 – - mA

GPIO Rise Time/Fall Time 20 100 ns

Test Conditions unless otherwise stated: DVDD = +3.3V +5%; TA = -10°C to 70°C; external load = 50 pF

Table 3-8. CX20548 LSD AVDD and DVDD DC Electrical Characteristics

PWR Input AVDD Ou tput DVDD Output

+3.3 V < PWR < +4.5 V +3.3 V  5% +3.0 V  5%

PWR must be at least 200mV higher than AVDD.

See PWR, AVDD, and DVDD descriptions in Table 3-6.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

3-12 Conexant Proprietary and Confidential Information 102635F

3.3 Operating Conditions, Absolute Maximum Ratings, and Power

Requirements

The CX93011 operating conditions are specified in Table 3-9.

The CX93011 absolute maximum ratings are listed in Table 3-10.

The CX93011 current and power requirements are listed in Table 3- 1 1.

Table 3-9. CX93011 Modem Operating Conditions

Parameter Symbol Limits Units

Supply Voltage VDD +3.3 ± 5% VDC

Operating Ambient Temperature TA -10 to +70 °C

Note: Voltages referenced to ground (VSS).

Table 3-10. Absolute Maximum Ratings

Parameter Symbol Limits Units

VDD Supply Voltage VDD -0.5 to +4.0 VDC

Storage Temperature Range TSTG -55 to +125 °C

Relative humidity HREL Up to 90% non-condensing,

or a wet bulb temperature up

to 35 °C, whichever is less.

Input Voltage VIN -0.3 to (VDD + 0.3) VDC

Voltage Applied to Outputs in High

Impedance (Off) State VHZ -0.5 to +5.5 VDC

DC Input Clamp Current IIK ±20 mA

DC Output Clamp Current IOK ±20 mA

Static Discharge Voltage (25°C) VESD ±2500 VDC

Latch-up Current (25°C) ITRIG ±400 mA

Handling CMOS Devices

The device contains circuitry to protect the inputs against damage due to high static

voltages. However, it is advised that normal precautions be taken to avoid application of

any voltage higher than maximum rated voltage.

An unterminated input can acquire unpred ictable voltages through coupling with stray

capacitance and intern al cross talk. Both power dissipation and device noise immunity

degrades. Therefore, all inpu ts shou ld be connected to an ap propriate supply voltage.

Input signals should never exceed the voltage range from -0.3V to (VDD + 0.3) V. This

prevents forward biasing the input protection diodes and possibly entering a latch up

mode due to high current transients.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 3-13

Table 3-11. CX93011 Current and Power Requirements

Mode Typical

Current

(Ityp)

(mA)

Maximum

Current

(Imax)

(mA)

Typical

Power

(Ptyp)

(mW)

Maximum

Power

(Pmax)

(mW)

Normal Mode: On-hook, Idle, waiting for ring 82 84 271 290

Normal Mode: Off-hook, normal data connection 96 99 316 342

Idle Mode 18 18 59 64

Sleep Mode 18 18.6 59.4 64.4

Deep Sleep Mode 7.9 7.9 25.9 27.4

Stop Mode 6.0 6.0 19.6 20.7

Notes:

1. Test conditions: VDD = +3.3V for typical values; VDD = +3.465V for maximum values.

2. Input Ripple  0.1 Vpeak-peak.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

3-14 Conexant Proprietary and Confidential Information 102635F

3.4 Crystal and Clock Specifications

Crystal specifications are listed in Table 3-12. Clock specifications are listed in

Table 3-13.

Table 3-12. Crystal Specifications

Characteristic Value

Frequency 28.224 or 27.000 MHz nominal

Calibration Tolerance ±50 ppm at 25°C (CL = 16.5 and 19.5 pF)

Frequency Stability vs. Temperature ±35 ppm (-10°C to 70°C)

Frequency Stability vs. Aging ±20 ppm/5 years

Oscillation Mode Fundamental

Calibration Mode Parallel resonant

Load Capacitance, CL 18 pF nom.

Shunt Capacitance, CO 7 pF max.

Series Resistance, R1 35-60  max. @20 nW drive level

Drive Level 100 µW correlation; 500 µW max.

Operating Temperature -10°C to 70°C

Storage Temperature –40°C to 85°C

Table 3-13. Clock Specifications

Characteristic Value

Type Square wave

Frequency 28.224 or 27.000 MHz nominal

Level 3.3 Vp-p ± 0.3 V zero offset

Duty Cycle 50 ± 10 %

Stability ±50 ppm

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 4-1

4. Package Dimensions

The 20-pin QFN package dimensions are shown in Figure 4-1.

The 16-pin QFN package dimensions are shown in Figure 4-2.

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

4-2 Conexant Proprietary and Confidential Information 102635F

Figure 4-1. Package Dimensions for 20-Pin QFN

0.24

0.00

0.70

0.60

0.05

6.00 BSC

0.42

5.75 BSC

0.20 RE F.

0.65

0.01

5.75 BSC

6.00 BSC

12°

MIN.

A-

0.90

MAX.

0.85

NOM.

DIMENSIONS (mm)

NOTES:

1. NOT APPLICABLE.

2. DIMENSIONING & TOLERANCES CONFORM TO ASME Y14.5M. - 1994.

3. N IS THE NUMBER OF TERMINALS.

Nd IS THE NUMBER OF TERMINALS IN X-DIRECTION.

Ne IS THE NUMBER OF TERMINALS IN Y-DIRECTION.

4. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED

BETWEEN 0.20 AND 0.25mm FROM TERMINAL TIP.

5. THE PIN #1 IDENTIFIER (INDENTATION MARK OR OTHER FEATURE).

6. EXACT SHAPE AND SIZE OFTHIS FEATURE IS OPTIONAL.

7. ALL DIMENSIONS ARE IN MILLIMETERS.

8. THE SHAPE SHOWN ON FOUR CORNERS ARE NOT ACTUAL I/O.

9. PACKAGE WARPAGE IS 0.05mm MAXIMUM.

10. APPLIED FOR EXPOSED PAD AND TERMINALS. EXCLUDE EMBEDDING

PART OF EXPOSED PAD FROM MEASURING.

11. APPLIED ONLY FOR TERMINALS.

Nd 5

b 0.28 0.33 0.40

0.80 BSC

L0.600.50 0.75

Ne 5

20-PIN 6x6mm QFN_(REF: 45278_PVA_EPVB)

POD_20QFN_6x6mm_PVA_EPVC (05-1499ill)

D2 3.95 4.10 4.25

E2 3.95 4.10 4.25

0.60 DIA.

D1/2

D/2

E1/2 E/2

E1 E

0.10

SEATING

PLANE

0.05

0.10

3.2 REF.

4X P

E2/2

D2/2 PIN#1 ID

R0.20

0.45

(MIN. 0.35)

0.10 C

FOR PIN #1 ID AND

SEE DETAIL "A"

TIE BAR MARK OPTION

SCALE: NONE

TERMINAL TIP

411

0.05

0.10

MBA

TOP VIEW BOTTOM VIEW

SIDE VIEW

SECTION "C-C"

TERMINAL/SIDE

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 4-3

Figure 4-2. Package Dimensions for 16-Pin QFN

Max.

0.75

0.90

0.70

---

0.00

4.00 BSC

3.75 BSC

0.20 REF

0.65

0.01

0.85

0.05

b0.23

0.50

Min.

0.28

0.60

0.35

0.65 BSC

Nom.

1.95 2.10 2.25

PD_QFN016

16-Pin QFN Ref. 45250

TERMINALTIP

TOP VIEW

Pin 1 •

Identifier

EE1

BOTTOM VIEW

PLANE

S EAT I N G

NOTE 1

SCALE: NONE

SECTION "C-C"

Pin 1

Identifier

NOTES:

1. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED

BETWEEN 0.20 AND 0.25mm FROM TERMINAL TIP.

Dim.

Millimeters

SIDE VIEW

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

4-4 Conexant Proprietary and Confidential Information 102635F

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CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

102635F Conexant Proprietary and Confidential Information 5-1

5. Recommended QFN Surface Mount Land Patterns

The recommended surface mount land patterns based on the IPC-SM-782 standard for

board layout are shown in Figure 5-1 for th e 20-pin QFN and Figure 5-2 for the 16- pi n

QFN.

Figure 5-1. Recommended Surface Mount Land Pattern for 20-Pin QFN

CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet

5-2 Conexant Proprietary and Confidential Information 102635F

Figure 5-2. Recommended Surface Mount Land Pattern for 16-Pin QFN

NOTES

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