Production Data
WM9090
w
PD, November 2010, Rev 4.1
19
REGISTER
ADDRESS
BIT LABEL DEFAULT
DESCRIPTION
6
IN2A_ZC
0
IN2A PGA Zero Cross Control
0 = Change gain immediately
1 = Change gain on zero cross only
2:0
IN2A_VOL
[2:0]
011
IN2A Volume (differential mode)
000 = -6dB
001 = -3.5dB
010 = 0dB
011 = +3.5dB
100 = +6dB
101 = +12dB
110 = +18dB
111 = +18dB
IN2A Volume (single-ended mode)
000 = 0dB
001 = +2.5dB
010 = +6dB
011 = +9.5dB
100 = +12dB
101 = +18dB
110 = +24dB
111 = +24dB
R27 (1Bh)
IN2 Line Input
B Volume
8
IN2_VU
N/A
Input PGA Volume Update
Writing a 1 to this bit will cause IN2A and
IN2B input PGA volumes to be updated
simultaneously
7
IN2B_MUTE
1
IN2B PGA Mute
0 = Un-Mute
1 = Mute
6
IN2B_ZC
0
IN2B PGA Zero Cross Control
0 = Change gain immediately
1 = Change gain on zero cross only
2:0
IN2B_VOL
[2:0]
011
IN2B Volume (differential mode)
000 = -6dB
001 = -3.5dB
010 = 0dB
011 = +3.5dB
100 = +6dB
101 = +12dB
110 = +18dB
111 = +18dB
IN2B Volume (single-ended mode)
000 = 0dB
001 = +2.5dB
010 = +6dB
011 = +9.5dB
100 = +12dB
101 = +18dB
110 = +24dB
111 = +24dB
Table 3 Input PGA Volume Control
