CS3318 Cirrus Logic, Inc., CS3318 Datasheet - Page 39
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CS3318
Manufacturer Part Number
CS3318
Description
8-Channel Analog Volume Control
Manufacturer
Cirrus Logic, Inc.
Datasheet
1.CS3318.pdf
(44 pages)
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DS693F1
7.17
7.17.1 Master 3 Mute (Bit 1)
7.17.2 Master 3 ¼ dB Control (Bit 0)
Reserved
7
Master 3 Control - Address 18h
Default = 0
Function:
Default = 0
Function:
as dictated by the ZCMode[1:0] and TimeOut[2:0] bits in the Device Config 2 register (see
Configuration 2 - Address 0Ch” on page
The value of the Master 3 volume control register is mapped to the desired 0.5 dB step Master 3 vol-
ume setting by the following equation:
In the equation above, “Desired Volume Setting in dB” is determined by rounding the desired ¼ dB
resolution volume setting down to ½ dB resolution.
It should be noted that input values outside the CS3318’s analog range of +22 dB to -96 dB are valid,
however, the volume of each channel will be limited to the CS3318’s analog range (see
its” on page
See
This bit controls the Master 3 mute state. When set, the Master 3 mute condition is active. When
cleared, the Master 3 mute condition is released.
See
When set, ¼ dB of gain will be added to the Master 3 volume level.
See
Reserved
Table 5 on page 31
“Muting Controls” on page 21
Table 6 on page 32
6
20).
Reserved
Register Value
5
for example register settings.
for an example of volume settings using the ¼ dB control.
Reserved
=
for more information about the muting behavior of the CS3318.
4
(
2
×
34).
Desired Volume Setting in dB
Reserved
3
Reserved
2
)
+
M3_Mute
210
1
“Volume Lim-
CS3318
M3_Qtr
“Device
0
39