IS31AP2111 2x20W STEREO/1x40W MONO DIGITAL (I2S) AUDIO AMPLIFIER WITH 20 BANDS EQ FUNCTIONS November 2015 GENERAL DESCRIPTION FEATURES The IS31AP2111 is a digital I2S interface audio amplifier capable of driving a pair of 8 speakers at 20W when operating from a 24V supply. Due to its Class-D output drive stage; it can operate without an external heat-sink or fan. The IS31AP2111 integrates advanced audio processing capabilities, such as volume control, 20 bands speaker EQ, audio mixing, 3D surround and Dynamic Range Control (DRC). These functions are fully programmable via a simple I2C control interface. Robust protection circuits are provided to protect the IS31AP2111 from damage due to accidental or erroneous operating conditions. Because of its digital design, the IS31AP2111 is more tolerant to noise and PVT (Process, Voltage, and Temperature) variation than the analog Class-AB or Class-D audio amplifier counterpart. It has a robust anti-pop circuit for pop free operation during power ON. It integrates protection features for short circuit and over temperature. The IS31AP2111 is available in a thermally enhanced eTSSOP-24 package. APPLICATIONS TV audio Boom-box, CD and DVD receiver, docking system Powered speaker Wireless audio Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 16/18/20/24-bits input with I2S, Left-alignment and Right-alignment data format PSNR & DR (A-weighting) speaker: 99dB (PSNR), 104dB (DR) @24V Multiple sampling frequencies (FS) - 32kHz / 44.1kHz / 48kHz and - 64kHz / 88.2kHz / 96kHz and - 128kHz / 176.4kHz / 192kHz System clock = 64x, 128x, 192x, 256x, 384x, 512x, 576x, 768x, 1024x Fs - 64x~1024x FS for 32kHz / 44.1kHz / 48kHz - 64x~512x FS for 64kHz / 88.2kHz / 96kHz - 64x~256x FS for 128kHz / 176.4kHz / 192kHz Supply voltage - 3.3V for digital circuit - 10V~26V for speaker driver speaker output power at 24V - 10W x 2CH into 8 @0.24% THD+N for stereo - 20W x 2CH into 8 @0.38% THD+N for stereo - 40W x 1CH into 4 @0.12% THD+N for mono Sound processing including: - 20 bands parametric speaker EQ - Volume control (+24dB ~ -103dB, 0.125dB/step), - Dynamic range control (DRC) - Dual band dynamic range control - Power clipping - 3D surround sound - Channel mixing - Noise gate with hysteresis window - Bass/Treble tone control - DC-blocking high-pass filter Anti-pop design Short circuit and over-temperature protection I2C control interface with selectable device address Support hardware and software reset Internal PLL LV Under-voltage shutdown and HV Under-voltage detection Power saving mode 1 IS31AP2111 TYPICAL APPLICATION CIRCUIT VCC 24 470 F 0.1 F 0.1 F 19 21 VDD 1M 1M 4.7k 5 4.7k 6 7 Micro Controller 1 1 F 1 F 2 11 12 Digital Audio Source 4 3 VCCLA VCCRA VCCLB VCCRB GNDL GNDR DVDD DGND SDA SCL IS31AP2111 AD VCC 13 18 0.1 F 0.1 F 470 F 16 *Note 2 *Note 3 9 VDD 8 10 0.1 F OUTLA ERRORB OUTLB 10 10 10 OUTLB 22 10 470pF *Note 2 20 MCLK *Note 3 BCLK OUTRA LRCIN OUTRB SDATA 15 22 H 3A Bead 22 H 3A 470pF 10 10 10 470pF OUTRB *Note 2 Bead 1nF 10nF 1nF 10nF 470nF 220nF Speaker 8 *Note 1 100nF *Note 2 10 220nF 100nF Bead OUTRA 17 *Note 1 100nF 470pF RSTB PDB 22 H 3A Bead OUTLA 220nF 1nF 10nF 1nF 10nF 470nF 220nF 100nF Speaker 8 22 H 3A Figure 1 Typical Application Circuit (for BTL Stereo, Single-ended Input) VCC 24 470 F 0.1 F 0.1 F 19 21 VDD 1M 1M 4.7k 4.7k 5 6 7 Micro Controller 1 1 F 1 F 2 11 Digital Audio Source 12 4 3 VCCLA VCCRA VCCLB VCCRB GNDL GNDR DVDD DGND SDA SCL IS31AP2111 AD VCC 13 18 16 0.1 F 0.1 F 470 F 9 8 10 VDD OUTLA OUTLA ERRORB OUTLB LRCIN SDATA OUTRB 1nF 10 22 20 470pF OUTLB 82nF 15 OUTRA 17 *Note 2 1nF Speaker 8 4.7 H 3A *Note 3 OUTRA *Note 1 10 MCLK BCLK 4.7 H 3A 470pF 0.1 F RSTB PDB *Note 2 *Note 3 470pF 4.7 H 3A *Note 1 *Note 2 10 1nF 82nF 10 470pF OUTRB *Note 2 1nF Speaker 8 4.7 H 3A Figure 2 Typical Application Circuit (Economic Type, Moderate EMI Suppression) Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 2 IS31AP2111 Figure 3 Typical Application Circuit (for Mono) Note 1: These capacitors should be placed as close to speaker jack as possible, and their values should be determined according to EMI test results. Note 2: When concerning about short-circuit protection, it is suggested using the choke with its IDC larger than 5A. Note 3: The snubber circuit can be removed while the VCC 20V. Note 4: When concerning about short-circuit protection, it is suggested using the choke with its IDC larger than 10A. Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 3 IS31AP2111 PIN CONFIGURATION Package Pin Configuration (Top View) eTSSOP-24 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 4 IS31AP2111 PIN DESCRIPTION No. Pin Description Characteristics 1 PDB Power down, low active. Schmitt trigger TTL input buffer 2 ERRORB Error status, low active. Open-drain output 3 SDATA I2S serial audio data input. Schmitt trigger TTL input buffer 4 LRCIN Left/Right clock input (FS). Schmitt trigger TTL input buffer 5 SDA I2C serial data. Schmitt trigger TTL input buffer 6 SCL I2C serial clock input. Schmitt trigger TTL input buffer 7 RSTB Reset, low active. Schmitt trigger TTL input buffer 8 DGND Digital ground. 9 DVDD Digital power. 10 AD I2C select address. Schmitt trigger TTL input buffer 11 MCLK Master clock input. Schmitt trigger TTL input buffer 12 BCLK Bit clock input (64FS). Schmitt trigger TTL input buffer 13 VCCRA Right channel supply A. 14, 23 NC No connection. 15 OUTRA Right channel output A. 16 GNDR Right channel ground. 17 OUTRB Right channel output B. 18 VCCRB Right channel supply B. 19 VCCLB Left channel supply B. 20 OUTLB Left channel output B. 21 GNDL Left channel ground. 22 OUTLA Left channel output A. 24 VCCLA Left channel supply A. Thermal Pad Connect to GND. Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 5 IS31AP2111 ORDERING INFORMATION Industrial Range: 0C to +70C Order Part No. Package QTY IS31AP2111-ZLS1-TR IS31AP2111-ZLS1 eTSSOP-24, Lead-free 2500/Reel 62/Tube Copyright (c) 2015 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: a.) the risk of injury or damage has been minimized; b.) the user assume all such risks; and c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 6 IS31AP2111 ABSOLUTE MAXIMUM RATINGS Supply for driver stage (VCCR, VCCL), VCC Supply for digital circuit (DVDD), VDD Input voltage (SDA,SCL,RSTB,PDB,ERRORB,MCLK, BCLK,LRCIN,SDATA), VIN Thermal resistance, JA Junction temperature range, TJ Storage temperature range, TSTG ESD (HBM) ESD (CDM) -0.3V ~ +30V -0.3V ~ +3.6V -0.3V ~ +3.6V 32.8C/W 0C ~ 150C -65C ~ +150C 2kV 1kV Note: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS Symbol Parameter VCC Supply for driver stage to VCCR/L VDD Supply for digital circuit Condition Min. Typ. Max. Unit 7 26 V 3.15 3.45 V TJ Junction operating temperature 0 125 C TA Ambient operating temperature 0 70 C DC ELECTRICAL CHARACTERISTICS VCC=24V, TA=25C, RL=8 (unless otherwise noted). Symbol Parameter Condition Min. Typ. Max. Unit IPDH VCC supply current during power down VCC = 24V 4 200 A IPDL DVDD supply current during power down VDD = 3.3V 3.6 10 A VUVH_HV Under voltage disabled (For VCC) 10.2 V VUVL_HV Under voltage enabled (For VCC) 9.2 V VUVH_LV Under voltage disabled (For DVDD) 2.9 V VUVL_LV Under voltage enabled (For DVDD) 2.8 V RDS(ON) ISC TS Static drain-to-source ON-state resistor, PMOS Static drain-to-source ON-state resistor, NMOS L/R channel over-current protection Mono channel over-current protection 245 VCC =24V, ID = 500mA m 150 5.1 VCC =24V (Note 1) A 10 Junction temperature for driver shutdown 158 C Temperature hysteresis for recovery from shutdown 33 C Logic Electrical Characteristics VIH High level input voltage VIL Low level input voltage VOH High level output voltage VOL Low level output voltage CIN Input capacitance Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 2.0 V 0.8 2.4 V V 0.4 6.4 V pF 7 IS31AP2111 AC ELECTRICAL CHARACTERISTICS TA=25C, VCC=24V, VDD = 3.3V, fS = 48kHz, RL=8 with passive LC lowpass filter (L= 22H, RDC= 0.12, C=470nF), input is 1kHz sinewave, volume is 0dB unless otherwise specified. Symbol Parameter Condition Min. RMS output power THD+N=0.38%, +8dB volume (Note 2) Total harmonic distortion + noise VNO SNR PO THD+N DR PSRR Typ. Max. Unit 20 W PO = 10W 0.24 % Output noise 20Hz ~ 20kHz (Note 3) 179 V Signal-to-noise ratio +8dB volume, input level is -9dB (Note 3) 99 dB Dynamic range +8dB volume, input level is -68dB (Note 3) 104 dB Power supply ripple rejection VRIPPLE = 1VRMS at 1kHz -68 dB Channel separation -85 dB 1W @1kHz I2C DIGITAL INPUT SWITCHING CHARACTERISTICS (Note 4) Standard Mode Symbol Fast Mode Parameter Unit Min. Max. Min. Max. 0 100 0 400 fSCL Serial-Clock frequency tBUF Bus free time between a STOP and a START condition 4.7 1.3 s tHD, STA Hold time (repeated) START condition 4.0 0.6 s tSU, STA Repeated START condition setup time 4.7 0.6 s tSU, STO STOP condition setup time 4.0 0.6 s tHD, DAT Data hold time 0 tSU, DAT Data setup time 250 100 ns tLOW SCL clock low period 4.7 1.3 s tHIGH SCL clock high period 4.0 0.6 s 3.45 0 0.9 kHz s tR Rise time of both SDA and SCL signals, receiving 1000 20+0.1Cb 300 ns tF Fall time of both SDA and SCL signals, receiving 300 20+0.1Cb 300 ns Cb Capacitive load for each bus line 400 400 pF VNL Noise margin at the low level for each connected device (including hysteresis) 0.1VDD 0.1VDD V VNH Noise margin at the high level for each connected device (including hysteresis) 0.2VDD 0.2VDD V Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 8 IS31AP2111 I2S DIGITAL INPUT SWITCHING CHARACTERISTICS (Note 4) Symbol Parameter Condition Min. 10.41 Typ. Max. Unit 31.25 s tLR LRCIN period (1/FS) tBL BCLK rising edge to LRCIN edge 50 ns tLB LRCIN edge to BCLK rising edge 50 ns tBCC BCLK period (1/64FS) 162.76 488.3 ns tBCH BCLK pulse width high 81.38 244 ns tBCL CBLK pulse width low 81.38 244 ns tDS SDATA set up time 50 ns tDH SDATA hold time 50 ns Note 1: Speaker over-current protection is only effective when speaker drivers are properly connected with external LC filters. Please refer to the application circuit example for recommended LC filter configuration. Note 2: Thermal dissipation is limited by package type and PCB design. The external heat-sink or system cooling method should be adopted for maximum power output. Note 3: Measured with A-weighting filter. Note 4: Guaranteed by design. Figure 4 I2C Timing Figure 5 I2S Figure 6 Left-Alignment Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 9 IS31AP2111 Figure 7 Right-Alignment Figure 8 System Clock Timing Figure 9 Timing Relationship (Using I2S format as an example) Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 10 IS31AP2111 TYPICAL PERFORMANCE CHARACTERISTICS 20 10 10 5 2 THD+N(%) THD+N(%) 5 20 VCC = 24V RL = 8 Stereo 1 0.5 10kHz 0.2 0.1 VCC = 7V RL = 8 f = 1kHz Stereo VCC = 12V 2 VCC = 15V 1 VCC = 18V 0.5 0.2 VCC = 24V 0.1 1kHz 0.05 0.05 20Hz 0.02 0.02 0.01 1m 5m 10m 50m 100m 500m 1 2 5 10 20 0.01 10m 50 50m 100m Output Power(W) Figure 10 THD+N vs. Output Power RL = 8 f = 1kHz Mono 10 5 VCC = 12V VCC = 15V 1 VCC = 18V 0.5 0.2 VCC = 18V 0.2 0.1 0.02 VCC = 15V 0.5 0.05 VCC = 24V 0.02 VCC = 24V 0.01 10m 50m 100m 500m 1 2 5 10 20 0.01 10m 50 50m 100m Output Power(W) 2 5 10 20 50 100 Figure 13 THD+N vs. Output Power 20 20 VCC = 24V RL = 8 Stereo 10 5 2 THD+N(%) THD+N(%) 500m 1 Output Power(W) Figure 12 THD+N vs. Output Power 1 PO = 10W PO = 5W 0.2 0.1 VCC = 12V RL = 8 Stereo 2 1 0.5 PO = 2.5W PO = 5W 0.2 0.1 PO = 1W 0.05 0.05 PO = 0.5W 0.02 0.01 20 50 VCC = 12V 1 0.1 0.5 20 VCC = 7V RL = 4 f = 1kHz Mono 2 0.05 5 10 Figure 11 THD+N vs. Output Power VCC = 7V 2 10 5 20 THD+N(%) THD+N(%) 5 2 Output Power(W) 20 10 500m 1 PO = 0.5W PO = 1W 0.02 50 100 200 500 1k 2k 5k Frequency(Hz) Figure 14 THD+N vs. Frequency Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 20k 0.01 20 50 100 200 500 1k 2k 20k 5k Frequency(Hz) Figure 15 THD+N vs. Frequency 11 IS31AP2111 20 20 VCC = 24V RL = 4 Mono 10 5 2 THD+N(%) THD+N(%) 5 1 0.5 PO = 10W 0.2 PO = 5W 0.1 VCC = 12V RL = 4 Mono 10 2 1 0.5 PO = 5W PO = 2.5W 0.2 0.1 0.05 PO = 1W 0.05 PO = 1W PO = 2.5W 0.02 0.01 20 50 100 200 500 1k 2k 0.02 0.01 20 20k 5k PO = 0.5W 50 100 200 Frequency(Hz) 1k 2k 20k 5k Frequency(Hz) Figure 16 THD+N vs. Frequency Figure 17 THD+N vs. Frequency +0 +0 VCC = 24V RL = 8 PO = 1W Stereo VCC = 12V RL = 8 PO = 1W Stereo -20 Crosstalk(dB) -20 Crosstalk(dB) 500 -40 -60 Left to Right -40 Left to Right -60 -80 -80 Right to Left -100 -100 Right to Left -120 20 50 100 200 500 1k 2k 5k 10k -120 20 20k 50 100 200 Frequency(Hz) 2k 5k 10k 20k 16k 18k 20k Figure 19 Cross-Talk +40 VCC = 24V RL = 8 Stereo VCC = 24V RL = 8 Stereo +20 +0 -20 dBV dBV 1k Frequency(Hz) Figure 18 Cross-Talk +40 +30 +20 +10 +0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 500 -40 -60 -80 -100 -120 -140 0k 2k 4k 6k 8k 10k 12k 14k 16k Frequency(Hz) Figure 20 Spectrum at Peak SNR at -1dB Signal Input Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 18k 20k 0k 2k 4k 6k 8k 10k 12k 14k Frequency(Hz) Figure 21 Spectrum at -60dB Signal Input Level 12 IS31AP2111 100 90 80 VCC=12V 90 VCC=15V 80 VCC=22V VCC=24V 70 Efficiency(%) Efficiency(%) 100 VCC=12V VCC=15V VCC=18V 60 50 40 70 60 50 40 30 30 20 20 RL = 8 Stereo 10 0 0 5 VCC=22V VCC=24V VCC=18V RL = 8 Stereo 10 10 15 20 25 30 35 40 45 0 50 0 5 10 Output Power(W) 15 20 25 30 35 40 45 50 Output Power(W) Figure 22 Efficiency vs. Total Output Power (Without Power Saving Mode) Figure 23 Efficiency vs. Total Output Power (With Power Saving Mode) Figure 24 Output Power vs. Supply voltage Figure 25 Output Power vs. Supply voltage +1 +0.75 +0.5 VCC = 24V RL = 8 PO = 1W Stereo dBr +0.25 +0 -0.25 -0.5 -0.75 -1 20 50 100 200 500 1k 2k 5k 10k Frequency(Hz) Figure 26 Output Power vs. Supply voltage Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 Figure 27 Frequency Response 13 20k IS31AP2111 20 10 THD+N(%) 5 Switch Level: 26 RL = 8 Stereo 12V 2 1 15V 0.5 0.2 18V 0.1 24V 22V 0.05 0.02 0.01 10m 20m 50m 100m 200m 500m 1 2 5 10 20 50 Output Power(W) Figure 28 THD+N vs. Output Power Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 14 IS31AP2111 FUNCTIONAL BLOCK DIAGRAM VCC DVDD BCLK SDATA Input Interface Audio Signal Processing PCM to PWM SDM Speaker Driver LRCIN OUTL OUTR Internal System Clock SCL SDA I2C Control Interface PLL Logic Interface AD RSTB PDB GND DGND MCLK Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 ERRORB 15 IS31AP2111 APPLICATIONS INFORMATION OPERATION MODES With I2C Control Without I2C Control When using I2C control, user can program suitable parameters into the IS31AP2111 to enable or enhance specific operation features. Please refer to the register table section (Table 5 ~ Table 25) to get the more detail. The default settings, Bass, Treble, EQ, Volume, DRC are applied to register table content when using the IS31AP2111 without I2C control. For more information about default settings, please refer to the Default Column of Table 4 (Register Function). As default state is mute, customers should send a de-mute command via I2C to enable the system. INTERNAL PLL The IS31AP2111 has an integrated PLL to derive a synchronized internal clock (Fs) from the master clock (MCLK) input. FS MCLK/FS Setting Ratio for PLL MCLK Frequency Multiple Edge Evaluation for Master Clock PWM Career Frequency 48kHz 256x 12.288MHz 4x 384kHz 44.1kHz 256x 11.289MHz 4x 352.8kHz 32kHz 256x 8.192MHz 4x 256kHz DEFAULT VOLUME The default volume level of the IS31AP2111 is +2.0dB, and the default state is muted. Please give a de-mute command via I2C to enable the volume when the whole system is stable. For more detailed information, please refer to the register table section Table 7 (State Control 3 Register). PDB PDB RESET When a logic LOW is applied to the RSTB pin, the IS31AP2111 will clear the stored data and reset the register table to their default values. The IS31AP2111 will exit the reset state at the 256th MCLK cycle after the RSTB pin is raised to high. Figure 30 Power Down Timing Diagrams POWER DOWN CONTROL The IS31AP2111 has a built-in volume fade-in/fadeout design for power down and mute function. The relative power down timing diagrams for speakers are shown in Figure 29 and 30. PDB PDB Figure 29 Power Down Timing Diagrams With Mute Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 t FADE 10 T arg et ( dB ) 20 10 Original ( dB ) 20 128 (1 / 96 kHz ) The volume level will be decreased to -dB in several LRCIN (Left/Right clock) cycles. Once the fade-out procedure has completed, the IS31AP2111 will turn off the power stages, stop the clock signals (MCLK, BCLK) from feeding into the digital circuit and turn off the internal analog circuit current. When PDB pin is pulled low, the IS31AP2111 requires tFADE time to finish the above proceduresbefore entering the power down state. The IS31AP2111 will not accept programming commands while it is in the power down state. During power down, all the register table settings are kept until DVDD power is removed. If cancel the power down function within fade-out procedure, the IC will enter into fade-in after few 16 IS31AP2111 delay time (Figure 30). In addition, the IS31AP2111 will power the internal analog circuit and pass the clock signals (MCLK, BCLK) to the digital circuits. Then, the IS31AP2111 will return to its normal operation without powering down. SELF-PROTECTION CIRCUITS The IS31AP2111 has built-in protection circuits including thermal, short-circuit and under-voltage detection circuits. Thermal Protection When the internal junction temperature increases to greater than 158C, the power stages will be turned off. Normal operation will begin once the device temperature cools to 125C.The temperature values may vary by +/- 10%. Short-Circuit Protection The short-circuit protection circuit protects the output stage when the speaker wires are shorted to each other or GND/VDD. During normal 24V stereo operation, the current flowing through the power stage should be less than 5.1A. If an overtemperature or short-circuit condition (current greater than 5.1A) occurs, the open-drain ERRORB pin will be pulled low and latched into ERROR state and the output stages are disabled. Once the over-temperature or short-circuit condition is removed, the IS31AP2111 will exit the ERROR state when one of the following conditions are met: (1) RSTB pin is pulled low, (2) PDB pin is pulled low, or (3) Master mute is enabled through the I2C interface. Under-Voltage Protection If the VDD voltage is lower than 2.8V, the IS31AP2111 will turn off its speaker power stages and disable the digital processing section. The IS31AP2111 will return to normal operation When the VDD supply increases above 2.9V. ANTI-POP DESIGN The device generates control signals which suppresses pop sounds during initial power on/off, power down/up, mute, and volume level changes. 3D SURROUND SOUND The IS31AP2111 includes virtual surround sound technology for stereo signals inputs. POWER ON SEQUENCE At power up, the IS31AP2111's default volume setting is muted, so a de-mute command needs to be sent via the I2C interface once the device has completely powered up and stable. Figure 31 Power On Sequence Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 17 IS31AP2111 Table 2 Power On Sequence POWER OFF SEQUENCE Min. Max. Unit Hereunder is IS31AP2111's power off sequence. t1 0 - ms VCC t2 0 - ms t3 10 - ms t4 0 - ms t5 10 - ms t6 10 - ms BCLK LRCLK t7 0 - ms RSTB t8 200 - ms t9 20 - ms t10 - 0.1 ms t11 - 0.1 ms t12 25 - ms t13 25 - ms t14 - 22 ms - 0.1 ms Symbol t15 Condition DEF=L or H Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 VDD t4 MCLK t5 t3 t2 PDB t1 Don't Care I2C OUT Figure 32 Power Off Sequence Table 3 Power Off Sequence Symbol Min. t1 35ms t2 0.1ms t3 0ms t4 1ms t5 1ms 18 IS31AP2111 I2C-BUS TRANSFER PROTOCOL SCL level is high. I2C INTERFACE The IS31AP2111 uses a serial bus, which conforms to the I2C protocol, to control the chip's functions with two wires: SCL and SDA. The IS31AP2111 has a 7-bit slave address (A7:A1), followed by the R/W bit, A0. Set A0 to "0" for a write command and set A0 to "1" for a read command. The value of bits A3 is decided by the connection of the AD pin. The complete slave address is: Table 1 Slave Address (Write only): Bit A7:A4 A3 A2:A1 A0 Value 0110 AD 00 0/1 AD connected to GND, AD = 0; AD connected to VCC, AD = 1; The SCL line is uni-directional. The SDA line is bidirectional (open-collector) with a pull-up resistor (typically 4.7k). The maximum clock frequency specified by the I2C standard is 400kHz. In this discussion, the master is the microcontroller and the slave is the IS31AP2111. The timing diagram for the I2C is shown in Figure 4. The SDA is latched in on the stable high level of the SCL. When there is no interface activity, the SDA line should be held high. The "START" signal is generated by lowering the SDA signal while the SCL signal is high. The start signal will alert all devices attached to the I2C bus to check the incoming address against their own chip address. The 8-bit chip address is sent next, most significant bit first. Each address bit must be stable while the After the last bit of the chip address is sent, the master checks for the IS31AP2111's acknowledge. The master releases the SDA line high (through a pull-up resistor). Then the master sends an SCL pulse. If the IS31AP2111 has received the address correctly, then it holds the SDA line low during the SCL pulse. If the SDA line is not low, then the master should send a "STOP" signal (discussed later) and abort the transfer. Following acknowledge of IS31AP2111, the register address byte is sent, most significant bit first. IS31AP2111 must generate another acknowledge indicating that the register address has been received. Then 8-bit of data byte are sent next, most significant bit first. Each data bit should be valid while the SCL level is stable high. After the data byte is sent, the IS31AP2111 must generate another acknowledge to indicate that the data was received. The "STOP" signal ends the transfer. To signal "STOP", the SDA signal goes high while the SCL signal is high. READING PORT REGISTERS To read the device data, the bus master must first ____ send the IS31AP2111 address with the R/W bit set to "0", followed by the command byte, which determines which register is accessed. After a restart, the bus master must then send the IS31AP2111 ____ address with the R/W bit set to "1". Data from the register defined by the command byte is then sent from the IS31AP2111 to the master (Figure 35). Figure 33 Bit Transfer Figure 34 Writing to IS31AP2111 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 19 IS31AP2111 Figure 35 Reading from IS31AP2111 REGISTER DEFINITIONS The IS31AP2111's audio signal processing data flow is shown below. Users can control these functions by programming appropriate settings in the register table. In this section, the register table is summarized first. The definition of each register follows in the next section. Dual Band DRC Enable Dual Band DRC Disable Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 20 IS31AP2111 Table 4 Register Function Address Name Table Default 00h State Control 1 Register 5 000x 0000 01h State Control 2 Register 6 xx00 0000 02h State Control 3 Register 7 xxxx 111x 03h Master Volume Control Register 8 0001 1000 04h~06h Channel 1~3 Volume Register 9 0001 0100 07h,08h Bass/Treble Tone Register 10 xxx1 0000 - - 09h Reserved (Note) 0Ah State Control 4 Register 11 1001 0000 Channel 1~2 Configuration Register 12 xxx1 0000 - - 13 0110 1010 - - 0Bh~0Ch 0Dh Reserved 0Eh DRC Limiter Attack/Release Rate Register 0Fh~10h Reserved (Note) 11h State Control 5 Register 14 xx11 x010 12h VCC Under Voltage Selection Register 15 1xxx 0001 13h Noise Gate Gain Register 16 xxx0 xx00 14h Coefficient RAM Base Address Register 17 x000 0000 18~22 - 23 xxxx 0000 - - 15h~23h 24h 25h~29h User-Defined Coefficients Register Coefficients Control Register Reserved (Note) 2Ah Power Saving Mode Switching Level Register 24 0000 1101 2Bh Volume Fine Tune Register 25 0011 1111 Note: The reserved registers are not allowed to write any bits in them, or the IC will be abnormal. Table 5 00h State Control 1 Register Bit D7:D5 D4 D3 Name IF - PWML_X Default 000 x 0 Bit D2 D1 D0 Name PWMR_X LV_UVSEL LREXC Default 0 0 0 IS31AP2111 supports multiple serial data input formats including I2S, Left-alignment and Rightalignment. These formats are selected by users via D7~D5 of address 00h. The left/right channels can be exchanged to each other by programming to address 00h/D0, LREXC. IF 000 001 010 Input Format I2S 16-24 bits Left-alignment 16-24 bits Right-alignment 16 bits Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 011 100 101 Others Right-alignment 18 bits Right-alignment 20 bits Right-alignment 24 bits Not available PWML_X 0 1 OUTLA/B exchange No exchange Exchange PWMR_X 0 1 OUTRA/B exchange No exchange Exchange LV_UVSEL 0 1 LV Under Voltage Selection 2.8V 3.1V LREXC 0 1 Left/Right Channel Exchanged No exchange Left/Right exchange 21 IS31AP2111 Table 6 01h State Control 2 Register Table 8 03h Master Volume Control Register Bit D7:D6 D5:D4 D3:D0 Bit D7:D0 Name - FS PMF Name MV Default xx 00 0000 Default 0001 1000 IS31AP2111 has a built-in PLL and multiple MCLK/Fs ratios are supported. Detail setting is shown in the following table. Sampling Frequency 32/44.1/48kHz 64/88.2/96kHz 128/176.4/192kHz FS 00 01 1x PMF Multiple MCLK/FS Ratio Setting 0000 1024x(FS=00)/ 512x(FS=01)/ 256x(FS=1x) 0001 64x 0010 128x 0011 192x 0100 256x 0101 384x (Not available when FS=1x) 0110 512x (Not available when FS=1x) 0111 576x (Not available when FS=01,1x) 1000 768x (Not available when FS=01,1x) 1001 1024x (Not available when FS=01,1x) Others Not available Note: The FS x PMF should be lower than 49.152MHz, or the system will be error. Bit D7:D4 D3 D2:D1 D0 Name - MUTE CM1:CM2 - Default xxxx 1 11 x IS31AP2111 has mute function including master mute and channel mute. When master mute is enabled, all 2 processing channels are muted. User can mute these 2 channels individually by channel mute. When the mute function is enabled or disabled, the fade-out or fade-in process will be initiated. CMx 0 1 MV 0000 0000 0000 0001 0000 0010 ... 0001 1000 ... 1110 0110 1110 0111 Others Master Volume +12.0dB +11.5dB +11.0dB 0dB -103.0dB - - Table 9 04h~06h Channel 1~3 Volume Registers Table 7 02h State Control 3 Register MUTE Master Mute 0 All channel not muted 1 All channel muted IS31AP2111 supports both master-volume (03h Register) and channel-volume control (04h, 05h and 06h Registers) modes. Both volume control settings range from +12dB ~ -103dB and 0.5dB per step. Note that the master volume control is added to the individual channel volume control as the total volume control. For example, if the master volume level is set at, Level A (in dB unit) and the channel volume level is set at Level B (in dB unit), the total volume control setting is equal to Level A plus with Level B. 103dB Total volume ( Level A + Level B ) +24dB. Bit D7:D0 Name CxV Default 0001 0100 CxV 0000 0000 0000 0001 ... 0001 0100 ... 1110 0110 1110 0111 Others Channel x Volume +12.0dB +11.5dB +2dB -103.0dB - - Channel x Mute Channel x not muted Channel x muted Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 22 IS31AP2111 Table 10 07h/08h Bass/Treble Tone Registers Bit D7:D5 D6:D0 Name - BTC/TTC Default xxx 10000 Last two sets of EQ can be programmed as bass/treble tone boost and cut. When, 0Ah Register, D6, BTE is set to high, the EQ-7 and EQ-8 will perform as bass and treble respectively. The -3dB corner frequency of bass is 360Hz, and treble is 7kHz. The gain range for both filters is +12db ~ 12dB with 1dB per step. BTC/TTC 00000 ... 00100 00101 ... 10000 10001 ... 111xx EQL 0 1 EQ Link Each channel uses individual EQ Channel-2 uses channel-1 EQ PSL 0 1 Post-Scale Link Each channel uses individual post-scale Use channel-1 post-scale DSPB EQ Bypass 0 EQ enable 1 EQ bypass DC Blocking HPF Bypass HPF DC enable HPF DC bypass Bass/Treble Gain Setting +12dB HPB 0 1 +12dB +11dB Table 12 0Bh~0Ch Channel 1~2 Configuration Registers 0dB -1dB -12dB Table 11 0Ah State Control 4 Register Bit D7 D6 D5 D4 Name SRBP BTE TBDRCE NGE Default 1 0 0 1 Bit D3 D2 D1 D0 Name EQL PSL DSPB HPB Default 0 0 0 0 Bit D7:D5 D4 D3 Name - CxDRCM CxPCBP Default xxx 1 0 Bit D2 D1 D0 Name CxDRCBP - CxVBP Default 0 x 0 The IS31AP2111 can configure each channel to enable or bypass DRC and channel volume and select the limiter set. IS31AP2111 support two mode of DRC, RMS and PEAK detection which can be selected via D4. The IS31AP2111 provides several DSP setting as following. CxDRCM 0 1 Channel 1/2 DRC Mode Peak detection RMS detection SRBP Surround Bypass 0 Surround enable 1 Surround bypass CxPCBP 0 1 Channel 1/2 Power Clipping Bypass Channel 1/2 PC enable Channel 1/2 PC bypass CxDRCBP 0 1 Channel 1/2 DRC Bypass Channel 1/2 DRC enable Channel 1/2 DRC bypass CxVBP 0 Channel 1/2 Volume Bypass Channel 1/2's master volume operation Channel 1/2's master volume bypass BTE 0 1 Bass/Treble Selection Bypass Bass/treble disable Bass/treble enable TBDRCE Two Band DRC Enable 0 Two band DRC disable 1 Two band DRC enable NGE 0 1 Noise Gate Enable Noise gate disable Noise gate enable Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 1 23 IS31AP2111 Table 13 0Eh DRC Limiter Attack/Release Rate Register Bit D7:D5 D6:D0 Name LA LR Default 0110 1010 The IS31AP2111 defines a set of limiter. The attack/release rates are defines as following table. LA 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 DRC Attack Rate 3dB/ms 2.667dB/ms 2.182dB/ms 1.846dB/ms 1.333dB/ms 0.889dB/ms 0.4528dB/ms 0.2264dB/ms 0.15dB/ms 0.1121dB/ms 0.0902dB/ms 0.0752dB/ms 0.0645dB/ms 0.0563dB/ms 0.0501dB/ms 0.0451dB/ms LR 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 DRC Release Rate 0.5106dB/ms 0.1371dB/ms 0.0743dB/ms 0.0499dB/ms 0.0360dB/ms 0.0299dB/ms 0.0264dB/ms 0.0208dB/ms 0.0198dB/ms 0.0172dB/ms 0.0147dB/ms 0.0137dB/ms 0.0134dB/ms 0.0117dB/ms 0.0112dB/ms 0.0104dB/ms Table 14 11h State Control 5 Register Bit D7:D6 Name - Default xx D4 D3 SW_RSTB LVUV_FADE 1 - 1 x Bit D2 D1 D0 Name DIS_MCLK_DET QT_EN PWM_SEL Default 0 1 0 The IS31AP2111 provides several DSP setting as following. SW_RSTB 0 1 Software Reset Reset Normal operation LVUV_FADE 0 1 Low Under Voltage Fade No fade fade DIS_MCLK_DET Disable MCLK Detect Circuit 0 Enable MCLK detect circuit 1 Disable MCLK detect circuit QT_EN 0 1 Power Saving Mode Disable Enable PWM_SEL 0 1 PWM Modulation Qua-ternary Ternary Table 15 12h VCC Under Voltage Selection Register Bit D7 D6:D4 D3:D0 Name Dis_HVUV - HV_UVSEL Default 1 xxx 0001 IS31AP2111 can disable HV under voltage detection via D7. IS31AP2111 support multi-level HV under voltage detection via D3~ D0, using this function, IS31AP2111 will fade out signal to avoid pop sounds if high voltage supply disappear before low voltage supply. Dis_HVUV 0 1 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 D5 Disable HV Under Voltage Selection Enable Disable 24 IS31AP2111 HV_UVSEL 0000 0001 0011 0100 1100 Others UV Detection Level 8.2V 9.7V 13.2V 15.5V 19.5V 9.7V Table 18 15h~17h User-Defined Coefficients Registers (Top/Middle/Bottom 8-bits of coefficients A1) Table 16 13h Noise Gate Gain Register Bit D7:D5 D4 Name - DIS_NG_FADE Default xxx 0 Bit D3:D2 D1:D0 Name - NG_GAIN Default xx 00 IS31AP2111 provide noise gate function if receiving 2048 signal sample points smaller than noise gate attack level. User can change noise gate gain via D1~ D0. When noise gate function occurs, input signal will multiply noise gate gain (x1/8, x1/4 x1/2, x0). User can select fade out or not via D4. Noise Gate Gain x1/8 x1/4 x1/2 Mute Name C1B Default - Bit D7:D0 Name C2B Default - Table 20 1Bh~1Dh User-Defined Coefficients Registers (Top/Middle/Bottom 8-bits of coefficients A1) Bit D7:D0 Name C3B Default - Table 21 1Eh~20h User-Defined Coefficients Registers (Top/Middle/Bottom 8-bits of coefficients B2) Bit D7:D0 Name C4B Default - Table 22 21h~23h User-Defined Coefficients Registers (Top/Middle/Bottom 8-bits of coefficients A0) Table 17 14h Coefficient RAM Base Address Register Bit D7 D6:D0 Name - CFA Default x 000 0000 An on-chip RAM in IS31AP2111 stores user-defined EQ and mixing coefficients. The content of this coefficient RAM is indirectly accessed via coefficient registers, which consist of one base address register (14h), five sets of registers (15h ~ 23h) of three consecutive 8-bit entries for each 24-bit coefficient, and one control register (24h) to control access of the coefficients in the RAM. CFA D7:D0 Table 19 18h~1Ah User-Defined Coefficients Registers (Top/Middle/Bottom 8-bits of coefficients A2) DIS_NG_FADE Disable Noise Gate Fade 0 Fade 1 No fade NG_GAIN 00 01 10 11 Bit Coefficient RAM Base Address Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 Bit D7:D0 Name C5B Default - Table 23 24h Coefficients Control Register Bit D7:D4 D3 D2 D1 D0 Name - RA R1 WA W1 Default xxxx 0 0 0 0 RA 0 1 R1 0 1 Enable Of Reading A Set Of Coefficients From RAM Read complete Read enable Enable Of Reading A Single Coefficients From RAM Read complete Read enable 25 IS31AP2111 WA 0 1 Enable Of Writing A Set Of Coefficients To RAM Write complete Write enable Enable Of Writing A Single Coefficient To RAM Write complete Write enable W1 0 1 Table 24 2Ah Power Saving Mode Switching Level Register Bit D7:D5 D4:D0 Name QT_SW_WINDOW QT_SW_LEVEL Default 000 01101 If the PWM exceeds the programmed switching power level (default 26x40ns), the modulation algorithm will change from quaternary into power saving mode. It results in higher power efficiency during larger power output operations. If the PWM drops below the programmed switching power level power saving mode hysteresis window, the modulation algorithm will change back to quaternary modulation. QT_SW_WINDOW Hysteresis Window 000 2 001 3 010 4 011 5 100 6 101 7 110 8 111 9 Power Saving Mode QT_SW_LEVEL 00000 4 00001 4 00010 6 ... 01101 26 ... 11111 62 Switching Level and 0.125dB per step. Note that the master volume fine tune is added to the individual channel volume fine tune as the total volume fine tune. MV_FT 00 01 10 11 Master Volume Fine Tune 0dB -0.125dB -0.25dB -0.375dB C1V_FT 00 01 10 11 Channel 1 Volume Fine Tune 0dB -0.125dB -0.25dB -0.375dB C2V_FT 00 01 10 11 Channel 2 Volume Fine Tune 0dB -0.125dB -0.25dB -0.375dB RAM ACCESS The procedure to read/write coefficient(s) from/to RAM is as followings: Read A Single Coefficient From RAM: 1. Write 7-bit of address to I2C address-0X14 2. Write 1 to R1 bit in address-0X24 3. Read top 8-bits of coefficient in I2C address-0X15 4. Read middle 8-bits of coefficient in I2C address0X16 5. Read bottom 8-bits of coefficient in I2C address0X17 Read A Set Of Coefficients From RAM: Table 25 2Bh Volume Fine Tune Register Bit D7:D6 D5:D4 D3:D2 D1:D0 Name MV_FT C1V_FT C2V_FT - Default 00 11 11 11 IS31AP2111 supports both master-volume fine tune and channel-volume control fine tune modes. Both volume control settings range from 0dB ~ -0.375dB Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 1. Write 7-bits of address to I2C address-0X14 2. Write 1 to RA bit in address-0X24 3. Read top 8-bits of coefficient A1 in I2C address0X15 4. Read middle 8-bits of coefficient A1in I2C address-0X16 5. Read bottom 8-bits of coefficient A1 in I2C address-0X17 6. Read top 8-bits of coefficient A2 in I2C address0X18 7. Read middle 8-bits of coefficient A2 in I2C address-0X19 8. Read bottom 8-bits of coefficient A2 in I2C address-0X1A 9. Read top 8-bits of coefficient B1 in I2C address0X1B 10. Read middle 8-bits of coefficient B1 in I2C address-0X1C 26 IS31AP2111 11. Read bottom 8-bits of coefficient B1 in I2C address-0X1D 12. Read top 8-bits of coefficient B2 in I2C address0X1E 13. Read middle 8-bits of coefficient B2 in I2C address-0X1F 14. Read bottom 8-bits of coefficient B2 in I2C address-0X20 15. Read top 8-bits of coefficient A0 in I2C address0X21 16. Read middle 8-bits of coefficient A0 in I2C address-0X22 17. Read bottom 8-bits of coefficient A0 in I2C address-0X23 Note: the read and write operation on RAM coefficients works only if LRCIN (Pin 15) switching on rising edge. And, before each writing operation, it is necessary to read the address-0X24 to confirm whether RAM is writable current in first. If the logic of W1 or WA is high, the coefficient writing is prohibited. USER-DEFINED EQUALIZER The IS31AP2111 provides 20 parametric Equalizer (EQ). Users can program suitable coefficients via I2C control interface to program the required audio band frequency response for every EQ. The transfer function H (z) Write A Single Coefficient From RAM: A0 A1 z 1 A2 z 2 1 B1 z 1 B2 z 2 1. Write 7-bis of address to I2C address-0X14 2. Write top 8-bits of coefficient in I2C address-0X15 3. Write middle 8-bits of coefficient in I2C address0X16 4. Write bottom 8-bits of coefficient in I2C address0X17 5. Write 1 to W1 bit in address-0X24 The data format of 2's complement binary code for EQ coefficient is 3.21. i.e., 3-bits for integer (MSB is the sign bit) and 21-bits for mantissa. Each coefficient range is from 0x800000 (-4) to 0x7FFFFF (+3.999999523). These coefficients are stored in User Defined RAM and are referenced in following manner: Write A Set Of Coefficients From RAM: CHxEQyA0=A0 1. Write 7-bits of address to I2C address-0X14 2. Write top 8-bits of coefficient A1 in I2C address0X15 3. Write middle 8-bits of coefficient A1 in I2C address-0X16 4. Write bottom 8-bits of coefficient A1 in I2C address-0X17 5. Write top 8-bits of coefficient A2 in I2C address0X18 6. Write middle 8-bits of coefficient A2 in I2C address-0X19 7. Write bottom 8-bits of coefficient A2 in I2C address-0X1A 8. Write top 8-bits of coefficient B1 in I2C address0X1B 9. Write middle 8-bits of coefficient B1 in I2C address-0X1C 10. Write bottom 8-bits of coefficient B1 in I2C address-0X1D 11. Write top 8-bits of coefficient B2 in I2C address0X1E 12. Write middle 8-bits of coefficient B2 in I2C address-0X1F 13. Write bottom 8-bits of coefficient B2 in I2C address-0X20 14. Write top 8-bits of coefficient A0 in I2C address0X21 15. Write middle 8-bits of coefficient A0 in I2C address-0X22 16. Write bottom 8-bits of coefficient A0 in I2C address-0X23 17. Write 1 to WA bit in address-0X24 CHxEQyA1=A1 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 CHxEQyA2=A2 CHxEQyB1=-B1 CHxEQyB2=-B2 Where x and y represents the number of channel and the band number of EQ equalizer. All user-defined filters are path-through, where all coefficients are defaulted to 0 after being powered up, except the A0 that is set to 0x200000 which represents 1. MIXER The IS31AP2111 provides mixers to generate the extra audio source from the input left and right channels. The coefficients of mixers are defined in range from 0x800000 (-1) to 0x7FFFFF (0.9999998808). The function block diagram is as following figure: Figure 36 Mixer Function Block Diagram 27 IS31AP2111 PRE-SCALE For each audio channel, IS31AP2111 can scale input signal level prior to EQ processing which is realized by a 24-bit signed fractional multiplier. The pre-scale factor, ranging from -1 (0x800000) to 0.9999998808 (0x7FFFFF), for this multiplier, can be loaded into RAM. The default values of the prescaling factors are set to 0x7FFFFF. Programming of RAM is described in RAM access. POST-SCALE The IS31AP2111 provides an additional multiplication after equalizing and before interpolation stage, which is realized by a 24-bit signed fractional multiplier. The post-scaling factor, ranging from -1 (0x800000) to 0.9999998808 (0x7FFFFF), for this multiplier, can be loaded into RAM. The default values of the post-scaling factors are set to 0x7FFFFF. All channels can use the channel-1 post-scale factor by setting the post-scale link. Programming of RAM is described in RAM access. POWER CLIPPING The IS31AP2111 provides power clipping function to avoid excessive signal that may destroy loud speaker. The power clipping level is defined by 24bit representation and is stored in RAM address 0X6F. The following table shows the power clipping level's numerical representation. Table 26 Sample Calculation For Power Clipping Max. Hex dB Linear Decimal Amplitude (3.21 Format) VCC 0 1 2097152 200000 VCCx0.707 -3 0.707 1484574 16A71E VCCx0.5 -6 0.5 1048576 100000 VCCxL x ATTACK THRESHOLD FOR DYNAMIC RANGE CONTROL (DRC) The IS31AP2111 provides dynamic range control (DRC) function. When the input exceeds the programmable attack threshold value, the output power will be limited by this threshold power level via gradual gain reduction. Attack threshold is defined by 24-bit representation and is stored in RAM address 0X71 and 0X72. RELEASE THRESHOLD FOR DYNAMIC RANGE CONTROL (DRC) After IS31AP2111 has reached the attack threshold, its output power will be limited to that level. The output power level will be gradually adjusted to the programmable release threshold level. Release threshold is defined by 24-bit representation and is stored in RAM address 0X73 and 0X74. The following table shows the attack and release threshold's numerical representation. Table 27 Sample Calculation For Attack And Release Threshold Hex Power dB Linear Decimal (3.21 Format) (VCC^2)/R 0 1 2097152 200000 (VCC^2)/2R -3 0.5 1048576 100000 (VCC^2)/4R -6 0.25 524288 80000 (VCC^2)/R xL x D= L= 10(x/10) 2097152xL H= dec2hex(D) To best illustrate the dynamic range control, please refer to the following figure. D= H= L= 10(x/20) 2097152xL dec2hex(D) Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 28 IS31AP2111 Attack Threshold Release Threshold Input Release Threshold Attack Threshold Gain gain2 gain1 t1 Touch Attack Threshold Attack rate=gain1/t1 Release rate=gain2/t2 t2 Under Release Threshold Attack Threshold Release Threshold Output Release Threshold Attack Threshold Figure 37 Attack And Release Threshold NOISE GATE ATTACK LEVEL DRC ENERGY COEFFICIENT When both left and right signals have 2048 consecutive sample points less than the programmable noise gate attack level, the audio signal will multiply noise gate gain, which can be set at x1/8, x1/4, x1/2, or zero if the noise gate function is enabled. Noise gate attack level is defined by 24bit representation and is stored in RAM address 0X75. NOISE GATE RELEASE LEVEL After entering the noise gating status, the noise gain will be removed whenever IS31AP2111 receives any input signal that is more than the noise gate release level. Noise gate release level is defined by 24-bit representation and is stored in RAM address 0X76. The following table shows the noise gate attack and release threshold level's numerical representation. Table 28 Sample Calculation For Noise Gate Attack And Release Level Input Hex Linear Decimal Amplitude (1.23 Format) 0dB -100dB -110dB xdB 1 8388607 7FFFFF -5 83 53 -5.5 26 1A D= 2097152xL H= dec2hex(D) 10 10 L= 10(x/20) Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 Figure 38 Digital Processing Of Calculating RMS Signal Power The above figure illustrates the digital processing of calculating RMS signal power. In this processing, a DRC energy coefficient is required, which can be programmed for different frequency range. Energy coefficient is defined by 24-bit representation and is stored in RAM address 0X77 and 0X78. The following table shows the DRC energy coefficient numerical representation. 29 IS31AP2111 Table 29 Sample Calculation For DRC Energy Coefficient DRC Energy Hex dB Linear Decimal Coefficient (1.23 Format) 1 0 1 8388607 7FFFFF 1/256 -48.2 1/256 524288 80000 1/1024 -60.2 1/1024 131072 20000 L x D= L= H= 10(x/20) 2097152xL dec2hex(D) Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 30 IS31AP2111 THE USER DEFINED RAM The contents of user defined RAM is represented in following table. Table 30 User Defined RAM Address Name 0x00 0x01 0x02 Channel 1 EQ1 Coefficient Default Address CH1EQ1A1 0x000000 0x32 CH1EQ1A2 0x000000 0x33 Name Channel 2 EQ1 Coefficient Default CH2EQ1A1 0x000000 CH2EQ1A2 0x000000 CH2EQ1B1 0x000000 CH2EQ1B2 0x000000 CH1EQ1B1 0x000000 0x34 CH1EQ1B2 0x000000 0x35 0x04 CH1EQ1A0 0x200000 0x36 CH2EQ1A0 0x200000 0x05 CH1EQ2A1 0x000000 0x37 CH2EQ2A1 0x000000 CH1EQ2A2 0x000000 0x38 CH2EQ2A2 0x000000 CH2EQ2B1 0x000000 0x03 0x06 0x07 Channel 1 EQ2 Channel 2 EQ2 CH1EQ2B1 0x000000 0x39 0x08 CH1EQ2B2 0x000000 0x3A CH2EQ2B2 0x000000 0x09 CH1EQ2A0 0x200000 0x3B CH2EQ2A0 0x200000 0x0A CH1EQ3A1 0x000000 0x3C CH2EQ3A1 0x000000 CH1EQ3A2 0x000000 0x3D CH2EQ3A2 0x000000 CH2EQ3B1 0x000000 0x0B 0x0C Channel 1 EQ3 Channel 2 EQ3 CH1EQ3B1 0x000000 0x3E 0x0D CH1EQ3B2 0x000000 0x3F CH2EQ3B2 0x000000 0x0E CH1EQ3A0 0x200000 0x40 CH2EQ3A0 0x200000 0x0F CH1EQ4A1 0x000000 0x41 CH2EQ4A1 0x000000 CH1EQ4A2 0x000000 0x42 CH2EQ4A2 0x000000 CH2EQ4B1 0x000000 0x10 0x11 Channel 1 EQ4 Channel 2 EQ4 CH1EQ4B1 0x000000 0x43 0x12 CH1EQ4B2 0x000000 0x44 CH2EQ4B2 0x000000 0x13 CH1EQ4A0 0x200000 0x45 CH2EQ4A0 0x200000 0x14 CH1EQ5A1 0x000000 0x46 CH2EQ5A1 0x000000 CH1EQ5A2 0x000000 0x47 CH2EQ5A2 0x000000 CH2EQ5B1 0x000000 0x15 0x16 Channel 1 EQ5 Channel 2 EQ5 CH1EQ5B1 0x000000 0x48 0x17 CH1EQ5B2 0x000000 0x49 CH2EQ5B2 0x000000 0x18 CH1EQ5A0 0x200000 0x4A CH2EQ5A0 0x200000 0x19 CH1EQ6A1 0x000000 0x4B CH2EQ6A1 0x000000 CH1EQ6A2 0x000000 0x4C CH2EQ6A2 0x000000 CH2EQ6B1 0x000000 0x1A 0x1B Channel 1 EQ6 Channel 2 EQ6 CH1EQ6B1 0x000000 0x4D 0x1C CH1EQ6B2 0x000000 0x4E CH2EQ6B2 0x000000 0x1D CH1EQ6A0 0x200000 0x4F CH2EQ6A0 0x200000 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 31 IS31AP2111 Table 30 User Defined RAM (Continues) Address Name 0x1E 0x1F 0x20 Channel 1 EQ7 Coefficient Default Address CH1EQ7A1 0x000000 0x50 CH1EQ7A2 0x000000 0x51 Name Channel 2 EQ7 Coefficient Default CH2EQ7A1 0x000000 CH2EQ7A2 0x000000 CH2EQ7B1 0x000000 CH2EQ7B2 0x000000 CH1EQ7B1 0x000000 0x52 CH1EQ7B2 0x000000 0x53 0x22 CH1EQ7A0 0x200000 0x54 CH2EQ7A0 0x200000 0x23 CH1EQ8A1 0x000000 0x55 CH2EQ8A1 0x000000 CH1EQ8A2 0x000000 0x56 CH2EQ8A2 0x000000 CH2EQ8B1 0x000000 0x21 0x24 0x25 Channel 1 EQ8 Channel 2 EQ8 CH1EQ8B1 0x000000 0x57 0x26 CH1EQ8B2 0x000000 0x58 CH2EQ8B2 0x000000 0x27 CH1EQ8A0 0x200000 0x59 CH2EQ8A0 0x200000 0x28 CH1EQ9A1 0x000000 0x5A CH2EQ9A1 0x000000 CH1EQ9A2 0x000000 0x5B CH2EQ9A2 0x000000 CH2EQ9B1 0x000000 0x29 0x2A Channel 1 EQ9 Channel 2 EQ9 CH1EQ9B1 0x000000 0x5C 0x2B CH1EQ9B2 0x000000 0x5D CH2EQ9B2 0x000000 0x2C CH1EQ9A0 0x200000 0x5E CH2EQ9A0 0x200000 0x2D CH3EQ1A1 0x000000 0x5F CH3EQ2A1 0x000000 CH3EQ1A2 0x000000 0x60 CH3EQ2A2 0x000000 CH3EQ2B1 0x000000 0x2E 0x2F Channel 1 EQ10 Channel 2 EQ10 CH3EQ1B1 0x000000 0x61 0x30 CH3EQ1B2 0x000000 0x62 CH3EQ2B2 0x000000 0x31 CH3EQ1A0 0x200000 0x63 CH3EQ2A0 0x200000 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 32 IS31AP2111 Table 30 User Defined RAM (Continues) Address Name Coefficient Default 0x64 Channel 1 Mixer1 M11 0x7FFFFF 0x65 Channel 1 Mixer2 M12 0x000000 0x66 Channel 2 Mixer1 M21 0x000000 0x67 Channel 2 Mixer2 M22 0x7FFFFF 0x68~0x69 Reserve Reserve - 0x6A Channel 1 Prescale C1PRS 0x7FFFFF 0x6B Channel 2 Prescale C2PRS 0x7FFFFF 0x6C Channel 1 Postscale C1POS 0x7FFFFF 0x6D Channel 2 Postscale C2POS 0x7FFFFF 0x6E Reserve Reserve - 0x6F CH1.2 Power Clipping PC1 0x200000 0x70 Reserve Reserve - 0x71 CH1.2 DRC Attack Threshold DRC1_ATH 0x200000 0x72 CH1.2 DRC Release Threshold DRC1_RTH 0x80000 0x73 CH3 DRC Attack Threshold DRC2_ATH 0x200000 0x74 CH3 DRC Release Threshold DRC2_RTH 0x80000 0x75 Noise Gate Attack Level NGAL 0x0001A 0x76 Noise Gate Release Level NGRL 0x000053 0x77 DRC1 Energy Coefficient DRC1_EC 0x8000 0x78 DRC2 Energy Coefficient DRC2_EC 0x2000 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 33 IS31AP2111 CLASSIFICATION REFLOW PROFILES Profile Feature Pb-Free Assembly Preheat & Soak Temperature min (Tsmin) Temperature max (Tsmax) Time (Tsmin to Tsmax) (ts) 150C 200C 60-120 seconds Average ramp-up rate (Tsmax to Tp) 3C/second max. Liquidous temperature (TL) Time at liquidous (tL) 217C 60-150 seconds Peak package body temperature (Tp)* Max 260C Time (tp)** within 5C of the specified classification temperature (Tc) Max 30 seconds Average ramp-down rate (Tp to Tsmax) 6C/second max. Time 25C to peak temperature 8 minutes max. Figure 39 Classification Profile Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 34 IS31AP2111 PACKAGE INFORMATION eTSSOP-24 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 35 IS31AP2111 RECOMMENDED LAND PATTERN 6.1 0.65 2.85 0.45 4.05 1.65 Note: 1. Land pattern complies to IPC-7351. 2. All dimensions in MM. 3. This document (including dimensions, notes & specs) is a recommendation based on typical circuit board manufacturing parameters. Since land pattern design depends on many factors unknown (eg. user's board manufacturing specs), user must determine suitability for use. Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 36 IS31AP2111 REVISION HISTORY Revision Detail Information Date A Initial release 2015.06.12 B 1. Add mono mode 2. Update EC table 3. Add performance figures 2015.10.20 Integrated Silicon Solution, Inc. - www.issi.com Rev. B, 10/20/2015 37