WM8956 Datasheet, PDF (21/80 Pages) Cirrus Logic – Hi-Fi DAC with 1W Stereo Class D Speaker Drivers

Production Data
WM8956
REGISTER
ADDRESS
BIT
7
LABEL
RINMUTE
6
RIZC
5:0
RINVOL
[5:0]
R23 (17h)
0
Additional
Control (1)
1
TOEN
TOCLKSEL
DEFAULT
DESCRIPTION
1
0
010111
( 0dB )
0
0
Right Input PGA Analogue Mute
1 = Enable Mute
0 = Disable Mute
Note: IPVU must be set to un-mute.
Right Input PGA Zero Cross
Detector
1 = Change gain on zero cross only
0 = Change gain immediately
Right Input PGA Volume Control
111111 = +30dB
111110 = +29.25dB
. . 0.75dB steps down to
000000 = -17.25dB
Timeout Enable (Also enables jack
detect debounce clock)
0 = Timeout disabled
1 = Timeout enabled
Slow Clock Selection (Used for
volume update timeouts and for jack
detect debounce)
0 = SYSCLK / 2²¹ (Slower
Response)
1 = SYSCLK / 2¹⁹ (Faster Response)
Table 4 Input PGA Volume Control
See "Volume Updates" for more information on volume update bits, zero cross and timeout operation.
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PD, November 2011, Rev 4.1
21