Datasheet

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
00000000
D7 D6 D5 D4 D3 D2 D1 D0
RCV3 RCV2 RCV1 RCV0 CNV11 CNV10 CNV9 CNV8
00001111
D7 D6 D5 D4 D3 D2 D1 D0
CNV7 CNV6 CNV5 CNV4 CNV3 CNV2 CNV1 CNV0
11111111