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AK4679EG Datasheet, PDF (215/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP | |||
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[AK4679]
CONTROL SEQUENCE (PCM)
â PCM I/F A(Baseband) to PCM I/F B(Bluetooth)
Power Supply
PDNA pin
PMVCM bit
(Addr:00H, D0)
PMOSC bit
PMPCMA/B bit
PMSRx bits
(Addr:1FH, D6-0)
SYNCA/B pins
BICKA/B pins
SDTOA pin
SDTOB pin
(1)
(2) (3)
(4)
(6)
(5)
"0" data
"0" data
164/fs2
Input
Normal State
164/fs3
Normal State
"0" data
"0" data
Example:
PCM I/F A/B Format: Linear, Long Frame
MSBSA=BCKPA= â0â, MSBSB=BCKPB=â0â
PCM I/F A Sampling Frequency: 16kHz
PCM I/F B Sampling Frequency: 44.1kHz
BIVOL: -6dB, DATT-C : -6dB
(1) Power Supply & PDN pin = âLâ Ã âHâ
(2)Addr:00H, Data:00H
Addr:18H, Data:0BH
Addr:20H, Data:01H
Addr:21H, Data:01H
Addr:24H, Data:18H
Addr:26H: Data:02H
Addr:27H, Data:07H
Addr:28H, Data:00H
(3) Addr:00H, Data:01H
(4) Addr:1FH, Data:7FH
Phone Call
(5) Addr:1FH, Data:00H
(6) Addr:00H, Data:00H
Note: PMSRx bit means PMSRAI, PMSRAO, PMSRBI and PMSRBO bits
Figure 161. Sequence of PCM I/F A to PCM I/F B
(Baseband RX to Bluetooth TX: SDTIAÃPCM I/F AÃSRCAIÃDATT-CÃMIX3ÃPCM I/F BÃSDTOB &
Bluetooth RX to Baseband TX: SDTIBÃPCM I/F BÃBIVOLÃMIX2AÃMIX2CÃSRCAOÃPCM I/F AÃSDTOA)
<Example>
(1) After Power Up, PDNA pin = âLâ à âHâ. âLâ time of 1.5μs or more is needed to reset the AK4679.
(2) Dummy command (Addr:00H, Data:00H) must be executed before control register is set.
OVTMB, BIV2-0, SDOA/BD, FMTA/B1-0, LAWA/B1-0, BCKPA/B, MSBSA/B, CVL6-0, MX2A1-0,
MX2C1-0, MXSB2-0, SBMX1-0 bits should be set during this period.
(3) Power Up VCOM: PMVCM bit = â0â Ã â1â
VCOM should first be powered up before the other block operates.
(4) Power Up Internal Oscillator, SRCAI, SRCAO, SRCBI, SRCBO, PCM I/F A port and PCM I/F B port.
PMSRBO=PMSRBI=PMPCMB=PMOSC=PMSRAO=PMSRAI=PMPCMA bits: â0â Ã â1â
SDTOA(SDTOB) outputs data after power-down state is released by inputting SYNCA(SYNCB). This initial
of SRCAO(SRCBO) is 164/fs2(164/fs3) for SDTOA(SDTOB) output enable after power-down state is
released by inputting SYNCA(SYNCB).
(5) Power down Internal Oscillator, SRCAI, SRCAO, SRCBI, SRCBO, PCM I/F A port and PCM I/F B port.
PMSRBO=PMSRBI=PMPCMB=PMOSC=PMSRAO=PMSRAI=PMPCMA bits: â1â Ã â0â
(6) Power Down VCOM: PMVCM bit = â1â Ã â0â
MS1402-E-06
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2013/02
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