Pre-Production
WM8959
REGISTER
ADDRESS
BIT
7:0
LABEL
DEFAULT
DESCRIPTION
GPIO_POL[7:0]
(rw)
00h
GPIOn Input Polarity
0 = Non-inverted
1 = Inverted
GPIO_POL[7]: GPI8 polarity
GPIO_POL[6]: GPI7 polarity
GPIO_POL[5]: Reserved
GPIO_POL[4]: GPIO5 polarity
GPIO_POL[3]: GPIO4 polarity
GPIO_POL[2]: GPIO3 polarity
GPIO_POL[1]: Reserved
GPIO_POL[0]: GPIO1 polarity
R24 (18h)
15:9
8
00h
N/A
Reserved - Do Not Change
Input PGA Volume Update
LIN12 Input
IPVU[0]
PGA Volume
Writing a 1 to this bit will cause all input PGA volumes to be
updated simultaneously (LIN12, LIN34, RIN12 and RIN34)
7
6
LI12MUTE
1b
0b
LIN12 PGA Mute
0 = Disable Mute
1 = Enable Mute
LI12ZC
LIN12 PGA Zero Cross Detector
0 = Change gain immediately
1 = Change gain on zero cross only
Reserved - Do Not Change
LIN12 Volume
5
0b
4:0
LIN12VOL
[4:0]
01011b
(See Table 6 for PGA volume range)
Reserved - Do Not Change
Input PGA Volume Update
R25 (19h)
15:9
8
00h
N/A
LIN34 Input
IPVU[1]
PGA Volume
Writing a 1 to this bit will cause all input PGA volumes to be
updated simultaneously (LIN12, LIN34, RIN12 and RIN34)
7
6
LI34MUTE
1b
0b
LIN34 PGA Mute
0 = Disable Mute
1 = Enable Mute
LI34ZC
LIN34 PGA Zero Cross Detector
0 = Change gain immediately
1 = Change gain on zero cross only
Reserved - Do Not Change
LIN34 Volume
5
0b
4:0
LIN34VOL
[4:0]
01011b
(See Table 6 for PGA volume range)
Reserved - Do Not Change
Input PGA Volume Update
R26 (1Ah)
15:9
8
00h
N/A
RIN12 Input
PGA Volume
IPVU[2]
Writing a 1 to this bit will cause all input PGA volumes to be
updated simultaneously (LIN12, LIN34, RIN12 and RIN34)
7
6
RI12MUTE
1b
0b
RIN12 PGA Mute
0 = Disable Mute
1 = Enable Mute
RI12ZC
RIN12 PGA Zero Cross Detector
0 = Change gain immediately
1 = Change gain on zero cross only
Reserved - Do Not Change
RIN12 Volume
5
0b
4:0
RIN12VOL
[4:0]
01011b
(See Table 6 for PGA volume range)
Reserved - Do Not Change
Input PGA Volume Update
R27 (1Bh)
15:9
8
00h
N/A
RIN34 Input
PGA Volume
IPVU[3]
Writing a 1 to this bit will cause all input PGA volumes to be
updated simultaneously (LIN12, LIN34, RIN12 and RIN34)
PP, May 2008, Rev 3.1
137
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
