CS42418 Datasheet, PDF (42/67 Pages) Cirrus Logic – 110 dB, 192kHz 8-Ch CODEC WITH PLL

CS42418
5.12 Volume Control (addresses 0Fh, 10h, 11h, 12h, 13h, 14h, 15h, 16h)
7
xx_VOL7
6
xx_VOL6
5
xx_VOL5
4
xx_VOL4
3
xx_VOL3
2
xx_VOL2
1
xx_VOL1
0
xx_VOL0
5.12.1 VOLUME CONTROL (XX_VOL)
Default = 0
Function:
The Digital Volume Control registers allow independent control of the signal levels in 0.5 dB incre-
ments from 0 to -127 dB. Volume settings are decoded as shown in Table 14. The volume changes
are implemented as dictated by the Soft and Zero Cross bits (SZC[1:0]). All volume settings less than
-127 dB are equivalent to enabling the MUTE bit for the given channel.
Binary Code
00000000
00101000
01010000
01111000
10110100
Decimal Value
0
40
80
120
180
Volume Setting
0 dB
-20 dB
-40 dB
-60 dB
-90 dB
Table 14. Example Digital Volume Settings
5.13 Channel Invert (address 17h)
7
INV_B4
6
INV_A4
5
INV_B3
4
INV_A3
3
INV_B2
2
INV_A2
1
INV_B1
0
INV_A1
5.13.1 INVERT SIGNAL POLARITY (INV_XX)
Default = 0
0 - Disabled
1 - Enabled
Function:
When enabled, these bits will invert the signal polarity of their respective channels.
5.14 Mixing Control Pair 1 (Channels A1 & B1)(address 18h)
Mixing Control Pair 2 (Channels A2 & B2)(address 19h)
Mixing Control Pair 3 (Channels A3 & B3)(address 1Ah)
Mixing Control Pair 4 (Channels A4 & B4)(address 1Bh)
7
Px_A=B
6
Reserved
5
Reserved
4
Px_ATAPI4
3
Px_ATAPI3
2
Px_ATAPI2
1
Px_ATAPI1
0
Px_ATAPI0
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