ak4564 AKM Semiconductor, Inc., ak4564 Datasheet - Page 45

• Manufacturer Part Number: ak4564
• Description: 16bit Codec With Built-in Alc And Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Output Digital ATT Control
MS0140-E-01
Addr
0CH
ZCE: OATT Zero Crossing Enable Flag
OATT6-0: Output Digital Volume; 89 Level, 0dB ~ -65.25dB & Mute, 0.75dB step
Output Digital ATT Control
Default
Register Name
This volume includes zero crossing detection circuit. When ZCE is “1”, the change of volume is detected
by zero crossing independently. Zero crossing timeout period is set by TM1-0 and FSTM bits.
When ZCE is “0”, the OATT is changed immediately.
0: Disable
1: Enable (Default)
Table 25. Attenuation value of Output Digital Volume
ZCE
D7
1
DATA(HEX)
OATT6
D6
3DH
3CH
3BH
1
58H
57H
56H
03H
02H
01H
00H
- 45 -
OATT5
D5
0
ATT Level
-20.25dB
-21.75dB
-63.75dB
-65.25dB
-0.75dB
-21.0dB
-64.5dB
-1.5dB
MUTE
0dB
OATT4
D4
1
OATT3
Default
D3
1
OATT2
D2
0
OATT1
D1
0
[AK4564]
OATT0
2002/07
D0
0