Cirrus Logic CS4360 - Manual (Page 33)

CS4360
DS517F2 33
6.4 VOLUME CONTROL (ADDRESSES 06H - 0BH)
6.4.1 MUTE (MUTE) BIT 7
Default = 0
0 - Disabled
1 - Enabled
Function:
The Digital-to-Analog converter output will mute when enabled. The quiescent voltage on the output
will be retained. The muting function is affected, similar to attenuation changes, by the Soft and Zero
Cross bits. The MUTEC pin will become active during the mute period if the Mute function is enabled
for both channels in the pair.
6.4.2 VOLUME CONTROL (XX_VOL)
BIT 0-6
Default = 0
Function:
The Digital Volume Control registers allow independent control of the signal levels in 1-dB increments
from 0 to -119 dB. Volume settings are decoded as shown in Table 10. The volume changes are im-
plemented as dictated by the Soft Ramp and Zero Cross bits. All volume settings less than -119 dB
are equivalent to enabling the MUTE bit.
6.5 MODE CONTROL 2 (ADDRESS 0DH)
6.5.1 SOFT RAMP AND ZERO CROSS CONTROL (SZC)
BIT 6-7
Default = 10
00 - Immediate Change
01 - Zero Cross
10 - Soft Ramp
11 - Soft Ramp and Zero Cross
Function:
Immediate Change
When Immediate Change is selected all level changes will be implemented immediately in one step.
7 6 5 4 3 2 1 0
xx_MUTE xx_VOL6 xx_VOL5 xx_VOL4 xx_VOL3 xx_VOL2 xx_VOL1 xx_VOL0
0 0 0 0 0 0 0 0
Binary Code Decimal Value Volume Setting
0001010 10 -10 dB
0010100 20 -20 dB
0101000 40 -40 dB
0111100 60 -60 dB
1011010 90 -90 dB
Table 10. Example Digital Volume Settings
7 6 5 4 3 2 1 0
SZC1 SZC0 CPEN PDN POPG FREEZE MCLKDIV SNGLVOL
1 0 0 1 1 0 0 0