wm8770 Wolfson Microelectronics plc, wm8770 Datasheet - Page 31

• Manufacturer Part Number: wm8770
• Description: 24-bit, 192khz 8-channel Codec With Volume Control
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
00000
Analogue
Attenuation
DACL1
00001
Analogue
Attenuation
DACR1
00010
Analogue
Attenuation
DACL2
00011
Analogue
Attenuation
DACR2
00100
Analogue
Attenuation
DACL3
00101
Analogue
Attenuation
DACR3
REGISTER
ADDRESS
BIT
6:0
6:0
6:0
6:0
6:0
6:0
7
8
7
8
7
8
7
8
7
8
7
8
UPDATE
R1ZCEN
UPDATE
UPDATE
R2ZCEN
UPDATE
UPDATE
R3ZCEN
UPDATE
L1ZCEN
R1A[6:0]
L2ZCEN
R2A[6:0]
L3ZCEN
R3A[6:0]
L1A[6:0]
L2A[6:0]
L3A[6:0]
DAC ANALOGUE VOLUME CONTROL
The DAC volume may be adjusted independently in both the analogue and digital domain using
separate volume control registers.
LABEL
Not latched
Not latched
Not latched
Not latched
Not latched
Not latched
DEFAULT
1111111
1111111
1111111
1111111
1111111
1111111
(0dB)
(0dB)
(0dB)
(0dB)
(0dB)
(0dB)
0
0
0
0
0
0
Attenuation data for Left channel DACL1 in 1dB steps. See Table 11
DACL1 zero cross detect enable
Controls simultaneous update of all Attenuation Latches
Attenuation data for Right channel DACR1 in 1dB steps. See Table
11
DACR1 zero cross detect enable
Controls simultaneous update of all Attenuation Latches
Attenuation data for Left channel DACL2 in 1dB steps. See Table 11
DACL2 zero cross detect enable
Controls simultaneous update of all Attenuation Latches
Attenuation data for Right channel DACR2 in 1dB steps. See Table
11
DACR2 zero cross detect enable
Controls simultaneous update of all Attenuation Latches
Attenuation data for Left channel DACL3 in 1dB steps. See Table 11
DACL3 zero cross detect enable
Controls simultaneous update of all Attenuation Latches
Attenuation data for Right channel DACL3 in 1dB steps. See Table
11
DACR3 zero cross detect enable
Controls simultaneous update of all Attenuation Latches
0: Store L1A in intermediate latch (no change to output)
1: Store L1A and update attenuation on all channels.
0: Store R1A in intermediate latch (no change to output)
1: Store R1A and update attenuation on all channels.
0: Store L2A in intermediate latch (no change to output)
1: Store L2A and update attenuation on all channels.
0: Store R2A in intermediate latch (no change to output)
1: Store R2A and update attenuation on all channels.
0: Store L3A in intermediate latch (no change to output)
1: Store L3A and update attenuation on all channels.
0: Store R3A in intermediate latch (no change to output)
1: Store R3A and update attenuation on all channels.
0: zero cross disabled
1: zero cross enabled
0: zero cross disabled
1: zero cross enabled
0: zero cross disabled
1: zero cross enabled
0: zero cross disabled
1: zero cross enabled
0: zero cross disabled
1: zero cross enabled
0: zero cross disabled
1: zero cross enabled
DESCRIPTION
PD Rev 4.2 March 2008
WM8770
31