
Product Datasheet 2.1.1
Conan OCC8001-02
THE D2B PROTOCOL
The Digital Data Bus (D2B) is a
networking protocol for automotive
multimedia data communication
integrating digital audio, video and
other high data rate synchronous or
asynchronous signals, with the
control data for network
management protocols and APIs.
The protocol enables robust single
cable interconnection and
compatible interoperation of in-car
AV multimedia and ITS devices, such
as Radio Head Units, CD Changer,
CD-ROM, GPS Navigation, Voice
Control, Car Telephones, TV and
others.
CONAN® - OCC8001-02
The OCC8001-02 transceiver is a pin
compatible successor of the
OCC8001-01 with identical
functionality, featuring decreased
power and reduced EMI
The CONAN® is an advanced CMOS
device which enhances network
design by integrating source data
routing and communication protocol
management. handles multiple
source data channels via common
serial interface standards,
CONTROL PORT
Device control is handled via the
control port, which can be
configured as either an I2C or SPI
compliant interface. The choice of
interface is specified during hardware
resets.
NETWORK INTERFACE
Data is organized in frames which are
transmitted at the system sampling
frequency. Frames contain source
and control information and are
further divided into sub-frames of 8
bytes fields. At the physical level, data
is transferred as serial bits with bi-
phase encoding.
§ Fully compliant with D2B Mode0
Protocol
§ 4.2336Mbps source data rate
(equivalent to 3 x 16bit stereo
audio channels)
§ Integration of source and control
data
§ Multiple source data channels
§ SPDIF audio port
§ I2C and SPI compatible control
port
§ Flexible source data routing
§ Implements all low-level
communication tasks:
§ Communication Protocol (sub-
frames, synchronisation,...)
§ Communication Management
(CRC, ACK, NAK, retries,...)
§ Transparent channels
§ Easy hardware and software
implementation
§ Few external components
required
LCD DISPLAY
RADIO
HEAD-UNIT
VOICE I/O
GPS ENGINE
DVD PLAYER
VEHICLE
EMERGENCY
SYSTEM (VEMS)
MOBILE
TELEPHONE
FIXED TELEPHONE
HANDSET
DSP AMPLIFIER
CD-CHANGER
TransmitterNetwork Receiver
Source
Data
Router
Source Data In 1
Source Data In 2
Source Data Out 1
Source Data Out 2
Oscillator
Source Data In 0 Source Data Out 0
SPDIF In SPDIF Out
PLL
I2C/SPI Interface
Control Unit
Control Port
/RST
VDDA
GNDA
SCK
FSY
RMCK
SX2
SX1
/CS SDOUTSDIN SCL /INT ERROR
GNDD
VDDD
VREF
FILT
XTI
XTO
SR2
SR1
SR0
RX
SX0
TX
AD1 AD0 SDA SCL
For SPI
For I2C : Block Diagram