AK4560A Datasheet, PDF (21/47 Pages) Asahi Kasei Microsystems – 16bit CODEC with ALC and MIC/HP/SPK-Amps

ASAHI KASEI
[AK4560A]
Mode Control
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
03H Mode Control
0
0
VOL1 VOL0 MONO1 MONO0 DEM1 DEM0
R/W
RD
R/W
RESET
0
0
1
0
0
0
0
1
DEM1-0: Select De-emphasis Frequency
The AK4560A includes the digital de-emphasis filter (tc = 50/15us) by IIR filter. The filter
corresponds to three sampling frequencies (32kHz, 44.1kHz and 48kHz). The de-emphasis filter
selected DEM0 and DEM1 registers are enabled for input audio data.
DEM1
DEM0
Mode
0
0
44.1kHz
0
1
OFF
1
0
48kHz
1
1
32kHz
Table 2. De-emphasis Frequencies
RESET
MONO1-0: Select digital data to input to DAC
MONO1 MONO0 LOUT ROUT
0
0
Lch
Rch
0
1
Lch
Lch
1
0
Rch
Rch
1
1
Rch
Lch
Table 3. Select digital data to input to DAC
RESET
VOL1-0: LINEOUT Gain Setting
As signal level of LINEOUT is different by VA power supply voltage, a gain of LINEOUT is set
by VOL1-0 bits.
VOL1
1
VOL0
0
Gain VA Voltage
+7.5dB
2.8V ^RESET
1
1
+6.9dB
3.0V
Table 4. LINEOUT volume setting
MS0028-E-00
- 21 -
2000/05