AK4691EG AKM [Asahi Kasei Microsystems], AK4691EG Datasheet - Page 35

• Manufacturer Part Number: AK4691EG
• Description: 4ch ADC + 2ch DAC with MIC/HP/SPK-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

Note 50. When LOOP1-0 bits = “10”, TDM mode (DIF1-0 bits = “00”) is not supported.
Note 51. Stereo emphasis circuit in ADC1 and ADC2 is effective only at stereo operation.
When the below recording channels (PMADC2-1 bits = “01”
PMADC2-1 bits = “01”) are changed at PMDAC bit = “1, PMADC1 = PMADC2 bits = “11” should be set more than 2/fs.
<Example of Sequence>
MS0672-E-00
PMADC2 -1 bits
01, 10 or 11
a.
b. PMADC2-1 bits = “11”
c.
d. PMADC2-1 bits = “10” (“01”)
00
01
10
11
PMADC2-1 bits = “01” (“10”)
Delay ( ≥ 2/fs )
PMDAC
bit
0
1
0
1
1
1
1
Table 23. Digital EQ/HPF/LPF Circuit Setting (x: Don’t care)
LOOP1-0 bits
(Note
01, 11
10, 11
01, 11
00
10
01
10
x
x
x
50)
Recording Monitor Playback
Recording Monitor Playback
Recording Monitor Playback
Recording Monitor Playback
Recording & Playback
Recording & Playback
Recording & Playback
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Recording (ADC2)
Recording (ADC1)
(ADC1
(ADC2
(ADC2
(ADC1
Power-down
Recording
Playback
Status
PMADC2-1 bits = “10” or PMADC2-1 bits = “10”
DAC)
DAC)
DAC)
DAC)
Recording path
Recording path
Recording path
Recording path
Recording path
Recording path
Recording path
Recording path
Recording path
Playback path
EQ/HPF/LPF
Power-down
Digital
(default)
[AK4691]
2007/11