WM8776
Production Data
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R0 (00h)
0000000
6:0
HPLA[6:0]
1111001
(0dB)
Attenuation data for HEADPHONE left channel in 1dB steps.
Headphone
Analogue
Attenuation
Headphone
Left
7
8
HPLZCEN
UPDATE
0
Left HEADPHONE zero cross detect enable
0: zero cross disabled
1: zero cross enabled
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store HPLA in intermediate latch (no change to output)
1: Store HPLA and update attenuation on all channels.
R1 (01h)
0000001
6:0
7
HPRA[6:0]
HPRZCEN
UPDATE
1111001
(0dB)
Attenuation data for Headphone right channel in 1dB steps.
Headphone
Analogue
Attenuation
Headphone
0
Right Headphone zero cross detect enable
0: zero cross disabled
1: zero cross enabled
Right
8
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store HPRA in intermediate latch (no change to output)
1: Store HPRA and update attenuation on all channels.
R2 (02h)
0000010
6:0
7
HPMASTA[6:0]
MZCEN
1111001
(0dB)
Attenuation data for all ANALOGUE gains (L and R channels) in
1dB steps.
Headphone
Master Analogue
Attenuation
0
Master zero cross detect enable
0: zero cross disabled
(All Channels)
1: zero cross enabled
8
UPDATEA
LDA1[7:0]
UPDATED
RDA1[6:0]
UPDATED
MASTDA[7:0]
UPDATED
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store gains in intermediate latch (no change to output)
1: Store gains and update attenuation on all channels.
R3 (03h)
0000011
7:0
8
11111111
(0dB)
Digital Attenuation data for Left channel DACL in 0.5dB steps.
Digital
Attenuation
DACL
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store LDA1 in intermediate latch (no change to output)
1: Store LDA1 and update attenuation on all channels
R4 (04h)
0000100
7:0
8
11111111
(0dB)
Digital Attenuation data for Right channel DACR in 0.5dB steps.
Digital
Attenuation
DACR
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store RDA1 in intermediate latch (no change to output)
1: Store RDA1 and update attenuation on all channels.
R5 (05h)
0000101
7:0
8
11111111
(0dB)
Digital Attenuation data for all DAC channels in 0.5dB steps.
Master
Digital
Attenuation
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store gain in intermediate latch (no change to output)
1: Store gain and update attenuation on all channels.
(All Channels
PD Rev 4.0 April 2005
42
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
