AK4628VQ AKM Asahi Kasei Microsystems, AK4628VQ Datasheet
AK4628VQ
Available stocks
Related parts for AK4628VQ
AK4628VQ Summary of contents
Page 1
ASAHI KASEI High Performance Multi-channel Audio CODEC The AK4628 is a single chip CODEC that includes two channels of ADC and eight channels of DAC. The ADC outputs 24bit data and the DAC accepts up to 24bit input data. The ...
Page 2
ASAHI KASEI Block Diagram ADC LIN RIN ADC LOUT1 LPF DAC LPF DAC ROUT1 LOUT2 LPF DAC LPF DAC ROUT2 DAC LOUT3 LPF LPF DAC ROUT3 DAC LOUT4 LPF LPF DAC ROUT4 AK4628 Block Diagram (DIR and AC-3 DSP are ...
Page 3
... AKD4628 Pin Layout SDOS 1 I2C 2 SMUTE 3 BICK 4 LRCK 5 SDTI1 6 SDTI2 7 SDTI3 8 SDTO 9 DAUX 10 DFS0 11 MS0211-E-02 -40 ∼ +85°C 44pin LQFP(0.8mm pitch) Evaluation Board for AK4628 AK4628VQ Top View - 3 - [AK4628] 33 DZF2/OVF 32 RIN 31 LIN TST2 28 ROUT1 27 LOUT1 26 ROUT2 25 LOUT2 24 ROUT3 23 LOUT3 2004/03 ...
Page 4
ASAHI KASEI Compatibility with AK4529 1. Functions Functions AK4529 DAC Sampling frequency Up to 96kHz TDM128 (96kHz) Not available Digital Attenuator 256 levels Soft Mute Soft mute function is independent of Digital attenuator. DAC channel power-down Not available 2. Pin ...
Page 5
ASAHI KASEI No. Pin Name I/O 1 SDOS I SDTO Source Select Pin “L”: Internal ADC output, “H”: DAUX input SDOS pin should be set to “L” when TDM= “1”. 2 I2C I Control Mode Select Pin “L”: 3-wire Serial, ...
Page 6
ASAHI KASEI No. Pin Name I/O 23 LOUT3 O DAC3 Lch Analog Output Pin 24 ROUT3 O DAC3 Rch Analog Output Pin 25 LOUT2 O DAC2 Lch Analog Output Pin 26 ROUT2 O DAC2 Rch Analog Output Pin 27 LOUT1 ...
Page 7
ASAHI KASEI (AVSS, DVSS=0V; Note 5) Parameter Power Supplies Analog Digital Output buffer |AVSS-DVSS| Input Current (any pins except for supplies) Analog Input Voltage Digital Input Voltage (Expect LRCK, BICK pins) (LRCK, BICK pins) Ambient Temperature (power applied) Storage Temperature ...
Page 8
ASAHI KASEI (Ta=25°C; AVDD, DVDD, TVDD=5V; AVSS, DVSS=0V; VREFH=AVDD; fs=48kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement Frequency=20Hz∼20kHz at 48kHz, 20Hz~40kHz at fs=96kHz, 20Hz~40kHz at fs=192kHz; unless otherwise specified) Parameter ADC Analog Input Characteristics Resolution S/(N+D) (-0.5dBFS) fs=48kHz fs=96kHz DR (-60dBFS) ...
Page 9
ASAHI KASEI Parameter Power Supplies Power Supply Current (AVDD+DVDD+TVDD) Normal Operation (PDN = “H”) AVDD fs=48kHz, 96kHz fs=192kHz DVDD+TVDD fs=48kHz fs=96kHz fs=192kHz Power-down mode (PDN = “L”) Notes: 12. TVDD= (typ). 0.1mA 13. In the power-down mode. All digital input ...
Page 10
ASAHI KASEI (Ta=25°C; AVDD, DVDD=4.5∼5.5V; TVDD=2.7∼5.5V; fs=48kHz) Parameter ADC Digital Filter (Decimation LPF): Passband (Note 14) Stopband Passband Ripple Stopband Attenuation Group Delay (Note 15) Group Delay Distortion ADC Digital Filter (HPF): Frequency Response (Note 14) DAC Digital Filter: Passband ...
Page 11
ASAHI KASEI (Ta=25°C; AVDD, DVDD=4.5∼5.5V; TVDD=2.7∼5.5V; C Parameter Master Clock Timing 256fsn, 128fsd: Pulse Width Low Pulse Width High 384fsn, 192fsd: Pulse Width Low Pulse Width High 512fsn, 256fsd: Pulse Width Low Pulse Width High LRCK Timing Normal mode (TDM0= ...
Page 12
ASAHI KASEI Parameter Control Interface Timing (3-wire Serial mode): CCLK Period CCLK Pulse Width Low Pulse Width High CDTI Setup Time CDTI Hold Time CSN “H” Time CSN “↓” to CCLK “↑” CCLK “↑” to CSN “↑” 2 Control Interface ...
Page 13
ASAHI KASEI Timing Diagram MCLK LRCK BICK MCLK LRCK BICK MS0211-E-02 1/fCLK tCLKH tCLKL 1/fsn, 1/fsd tBCK tBCKH tBCKL Clock Timing (TDM= “0”) 1/fCLK tCLKH tCLKL 1/fs tLRH tLRL tBCK tBCKH tBCKL Clock Timing (TDM= “1” [AK4628] ...
Page 14
ASAHI KASEI LRCK tBLR BICK tLRS SDTO SDTI LRCK tBLR BICK SDTO SDTI MS0211-E-02 tLRB tSDS tSDH Audio Interface Timing (TDM= “0”) tLRB tSDS tSDH Audio Interface Timing (TDM= “1” [AK4628] VIH VIL VIH VIL tBSD 50%TVDD ...
Page 15
ASAHI KASEI CSN tCSS CCLK CDTI WRITE Command Input Timing (3-wire Serial mode) CSN CCLK CDTI D3 WRITE Data Input Timing (3-wire Serial mode) SDA tBUF tLOW tR SCL tHD:STA tHD:DAT Stop Start tPD PDN SDTO MS0211-E-02 tCCKL tCCKH tCDS ...
Page 16
ASAHI KASEI System Clock The external clocks, which are required to operate the AK4628, are MCLK, LRCK and BICK. MCLK should be synchronized with LRCK but the phase is not critical. There are two methods to set MCLK frequency. In ...
Page 17
ASAHI KASEI Table 5. Sampling Speed (Auto Setting Mode) LRCK fs 32.0kHz 44.1kHz 48.0kHz 88.2kHz 96.0kHz 176.4kHz 192.0kHz Table 6. System Clock Example (Auto Setting Mode) De-emphasis Filter The AK4628 includes the digital de-emphasis filter (tc=50/15µs) by IIR filter. De-emphasis ...
Page 18
ASAHI KASEI Audio Serial Interface Format When TDM= “L”, four modes can be selected by the DIF1-0 as shown in Table 8. In all modes the serial data is MSB-first, 2’s compliment format. The SDTO is clocked out on the ...
Page 19
ASAHI KASEI LRCK BICK(64fs) SDTO( SDTI(i) Don’t Care 19 SDTO-23:MSB, 0:LSB; SDTI-19:MSB, 0:LSB LRCK BICK(64fs) SDTO( SDTI(i) Don’t Care 23 23:MSB, 0:LSB ...
Page 20
ASAHI KASEI LRCK BICK(256fs) SDTO( Lch 32 BICK SDTI1( BICK LRCK BICK(256fs) SDTO( Lch 32 BICK SDTI1( BICK LRCK BICK(256fs) SDTO( ...
Page 21
ASAHI KASEI LRCK BICK(128fs) SDTO( Lch 32 BICK SDTI1( BICK SDTI2( BICK LRCK BICK(128fs Lch 32 BICK SDTI1( BICK SDTI2( ...
Page 22
ASAHI KASEI LRCK BICK(128fs) SDTO( Lch 32 BICK SDTI1( BICK SDTI2( BICK MS0211-E-02 128 BICK Rch 32 BICK ...
Page 23
ASAHI KASEI Overflow Detection The AK4628 has overflow detect function for analog input. Overflow detect function is enable if OVFE bit is set to “1” at serial control mode. OVF pin goes to “H” if analog input of Lch or ...
Page 24
ASAHI KASEI Digital Attenuator AK4628 has channel-independent digital attenuator (128 levels, 0.5dB step). Attenuation level of each channel can be set by each ATT7-0 bits (Table 13). Table 13. Attenuation level of digital attenuator Transition time between set values of ...
Page 25
ASAHI KASEI Soft mute operation Soft mute operation is performed at digital domain. When the SMUTE pin goes to “H”, the output signal is attenuated by -∞ during ATT_DATA×ATT transition time (Table 14) from the current ATT level. When the ...
Page 26
ASAHI KASEI Power-Down The ADC and DACs of AK4628 are placed in the power-down mode by bringing PDN “L” and both digital filters are reset at the same time. PDN “L” also reset the control registers to their default values. ...
Page 27
ASAHI KASEI Reset Function When RSTN = “0”, ADC and DACs are powered-down but the internal register are not initialized. The analog outputs go to VCOM voltage, DZF1-2 pins go to “H” and SDTO pin goes to “L”. Because some ...
Page 28
ASAHI KASEI DAC partial Power-Down Function All DACs of AK4628 can be powered-down individually by PD1-4 bits. The analog part of DAC is in power-down by PD1-4 bits =”1”, however, the digital part is not in power-down by it. Even ...
Page 29
ASAHI KASEI Serial Control Interface The AK4628 can control its functions via registers. Internal registers may be written by 2 types of control mode. The chip address is determined by the state of the CAD0 and CAD1 inputs. PDN = ...
Page 30
ASAHI KASEI 2 (2) I C-bus Control Mode (I2C= “H”) AK4628 supports the standard-mode I system (max:400kHz). The CSN pin should be connected to DVDD at the I Figure 17 shows the data transfer sequence at the I A HIGH ...
Page 31
ASAHI KASEI SDA SCL S start condition DATA OUTPUT BY MASTER DATA OUTPUT BY SLAVE(AK4529) SCL FROM MASTER S START CONDITION SDA SCL MS0211-E-02 Figure 22. START and STOP conditions Figure 23. Acknowledge on the I C-bus ...
Page 32
ASAHI KASEI Mapping of Program Registers Addr Register Name 00H Control 1 01H Control 2 02H LOUT1 Volume Control ATT7 03H ROUT1 Volume Control ATT7 04H LOUT2 Volume Control ATT7 05H ROUT2 Volume Control ATT7 06H LOUT3 Volume Control ATT7 ...
Page 33
ASAHI KASEI Register Definitions Addr Register Name 00H Control 1 Default SMUTE: Soft Mute Enable 0: Normal operation 1: All DAC outputs soft-muted Register bit of SMUTE is ORed with the SMUTE pin if P/S = “L”. DIF1-0: Audio Data ...
Page 34
ASAHI KASEI Addr Register Name 01H Control 2 Default ACKS: Master Clock Frequency Auto Setting Mode Enable 0: Disable, Manual Setting Mode 1: Enable, Auto Setting Mode Master clock frequency is detected automatically at ACKS bit “1”. In this case, ...
Page 35
ASAHI KASEI Addr Register Name 02H LOUT1 Volume Control 03H ROUT1 Volume Control 04H LOUT2 Volume Control 05H ROUT2 Volume Control 06H LOUT3 Volume Control 07H ROUT3 Volume Control 0BH LOUT4 Volume Control 0CH ROUT4 Volume Control Default ATT7-0: Attenuation ...
Page 36
ASAHI KASEI Addr Register Name 09H ATT speed & Power Down Control Default RSTN: Internal timing reset 0: Reset. DZF1-2 pins go to “H”, but registers are not initialized. 1: Normal operation ATS1-0: Digital attenuator transition time setting (see Table ...
Page 37
ASAHI KASEI Figure 25 shows the system connection diagram. An evaluation board is available which demonstrates application circuits, the optimum layout, power supply arrangements and measurement results. Condition: TVDD=5V, 3-wire serial control mode, CAD1-0 = “00” uP Digital Audio Source ...
Page 38
ASAHI KASEI Digital Ground System Controller Note: AVSS and DVSS must be connected to the same analog ground plane. 1. Grounding and Power Supply Decoupling The AK4628 requires careful attention to power supply and grounding arrangements. AVDD and DVDD are ...
Page 39
ASAHI KASEI 4. Analog Outputs The analog outputs are also single-ended and centered around the VCOM voltage. The input signal range scales with the supply voltage and nominally 0.6 x VREFH Vpp. The DAC input data format is 2’s complement. ...
Page 40
ASAHI KASEI 44pin LQFP (Unit: mm) 12.80±0.30 10. 0.37±0.10 0.15 Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: MS0211-E-02 PACKAGE 1.70max 0°∼10° 0.60±0.20 Epoxy Cu ...
Page 41
... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. MS0211-E-02 MARKING AK4628VQ XXXXXXX 1 1) Pin #1 indication 2) Date Code: XXXXXXX(7 digits) 3) Marking Code: AK4628VQ 4) Asahi Kasei Logo IMPORTANT NOTICE - 41 - [AK4628] 2004/03 ...