STA309A
Equalization and mixing
Doc ID 13855 Rev 4
63/67
8.4 PSCorrect
registers
ADC is used to input ripple data to SDI78. The left channel (7) is used internally. No audio
data can therefore be used on these channels. Though all channel mapping and mixing
from other inputs to channels 7 and 8 internally are still valid.
8.4.1
PSC1-2: ripple correction value (RCV) (0x51, 0x52)
Equivalent to negative maximum ripple peak as a percentage of Vcc (MPR), scaled by the
inverse of maximum ripple p-p as percentage of full-scale analog input to ADC.
Represented as a 1.11 signed fractional number.
8.4.2 PSC3:
correction
normalization value (CNV) (0x53)
Equivalent to 1 / (1+MPR) expressed as a 0.12 unsigned fractional number.
D7
D6
D5
D4
D3
D2
D1
D0
RCV11
RCV10
RCV9
RCV8
RCV7
RCV6
RCV5
RCV4
0
0
0
0
0
0
0
0
D7
D6
D5
D4
D3
D2
D1
D0
RCV3
RCV2
RCV1
RCV0
CNV11
CNV10
CNV9
CNV8
0
0
0
0
1
1
1
1
D7
D6
D5
D4
D3
D2
D1
D0
CNV7
CNV6
CNV5
CNV4
CNV3
CNV2
CNV1
CNV0
1
1
1
1
1
1
1
1