AK4950 Datasheet, PDF (33/106 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP & mini DSP

[AK4950]
LRCK
0 1 2 3 7 8 9 10 12 13 14 15 0 1 2 3 8 9 10 11 12 13 14 15 0 1
BICK(32fs)
SDTO(o)
8 23 22
16 15 14 13 12 11 10 9 8 23 22
16 15 14 13 12 11 10 9 8
SDTI(i)
8 23 22
16 15 14 13 12 11 10 9 8 23 22
16 15 14 13 12 11 10 9 8
0 1 2 3 19 20 21 22 23 24 25
BICK(64fs)
0 1 2 3 19 20 21 22 23 24 25
0
1
SDTO(o)
23 22
5 43 2 1 0
23 22
5 43210
SDTI(i)
23 22
5 4 3 21
23:MSB, 0:LSB
Lch Data
0 Don’t Care 23 22
5 4 3 2 1 0 Don’t Care
Rch Data
Figure 26. Mode 3 Timing
■ Mono/Stereo Mode
PMADL, PMADR, PMDML and PMDMR bits set mono/stereo ADC operation. When changing ADC operation and
analog/digital microphone, PMADL, PMADR, PMDML and PMDMR bits must be set “0” at first. When PMDML or
PMDMR bit = “1”, the setting of PMADL and PMADR bits is ignored.
PMADL bit
0
0
1
1
PMADR bit
ADC Lch data
ADC Rch data
0
All “0”
All “0”
1
Rch Input Signal
Rch Input Signal
0
Lch Input Signal
Lch Input Signal
1
Lch Input Signal
Rch Input Signal
Table 18. Mono/Stereo ADC operation (Analog MIC)
(default)
PMDML bit
0
0
1
1
PMDMR bit
ADC Lch data
ADC Rch data
0
All “0”
All “0”
1
Rch Input Signal
Rch Input Signal
0
Lch Input Signal
Lch Input Signal
1
Lch Input Signal
Rch Input Signal
Table 19. Mono/Stereo ADC operation (Digital MIC)
(default)
MS1320-E-00
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2011/10