ak4563a AKM Semiconductor, Inc., ak4563a Datasheet - Page 20

• Manufacturer Part Number: ak4563a
• Description: Low Power 16bit 4ch Adc & 2ch Dac With Alc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0067-E-02
Addr
02H
DEM1-0: Select De-emphasis frequency
DIF1-0: Select Audio Serial Interface Format (AK4516A compatible)
FS: Select Sampling Frequency
Register Name
Mode Control
No.
0
1
2
3
RESET
R/W
The AK4563A includes the digital de-emphasis filter (tc = 50/15 s) by IIR filter. The filter
corresponds to three sampling frequencies (32kHz, 44,1kHz and 48kHz). The de-emphasis filter
selected by DEM0 and DEM0 bits are enabled for input audio data.
FS bit can set limiter period (LTM1-0 bit), recovery period (WTM1-0 bit), zero crossing timeout
(ZTM1-0 bit) and FADEIN/FADEOUT period (FDTM1-0 bit) the same period at fs=32kHz and
48kHz.
0:fs=32kHz
1:fs=48kHz (RESET)
DIF1
0
0
1
1
DIF0
0
1
0
1
Table 5. Select Audio Serial Interface Format
D7
Table 4. Select De-emphasis frequency
0
0
SDTO0/SDTO1(ADC)
DEM1
I
MSB justified
MSB justified
LSB justified
2
0
0
1
1
S compatible
D6
0
0
DEM0
- 20 -
0
1
0
1
D5
0
0
44.1kHz
I
MSB justified
48kHz
32kHz
LSB justified
LSB justified
2
Mode
SDTI(DAC)
OFF
S compatible
D4
FS
1
R/W
RESET
DIF1
D3
0
BCLK
=64fs
32fs
32fs
32fs
DIF0
D2
0
Figure 10
Figure 11
Figure 12
Figure 9
Figure
DEM1
D1
0
[AK4563A]
2004/12
DEM0
RESET
D0
1