8 freeze control - address 0fh, 1 freeze (bit 7), 9 master1 mask - address 10h – Cirrus Logic CS3318 User Manual
Page 36: 10 master1 volume - address 11h, 1 master1 volume control (bits 7:0), 1 master 1 volume control (bits 7:0), Cs3318
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DS693F1
CS3318
7.8
Freeze Control - Address 0Fh
7.8.1
Freeze (Bit 7)
Default = 0
Function:
When the Freeze bit is set, the Freeze function allows modifications to the control port registers with-
out changes taking effect until Freeze bit is cleared. To make multiple changes in the Control Port
registers take effect simultaneously, set the Freeze bit, make all register changes, then clear the
Freeze bit.
7.9
Master 1 Mask - Address 10h
Each bit in this register serves as a Master 1 mask for its corresponding channel.
If a mask bit is set to ‘1’, the corresponding channel is unmasked, meaning that it will be affected by the
Master 1 volume and muting controls.
If a mask bit is set to ‘0’, the corresponding channel is masked, meaning that it will not be affected by the
Master 1 volume and muting controls.
This register defaults to FFh (all channels unmasked).
7.10
Master 1 Volume - Address 11h
7.10.1
Master 1 Volume Control (Bits 7:0)
Default = 11010010
Function:
The Master 1 volume control register allows the user to simultaneously gain or attenuate all un-
masked channels in 0.5 dB increments. The volume changes are implemented as dictated by the ZC-
Mode[1:0] and TimeOut[2:0] bits in the Device Config 2 register (see
The value of the Master 1 volume control register is mapped to the desired 0.5 dB step Master 1 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
).
for example register settings.
7
6
5
4
3
2
1
0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Freeze
7
6
5
4
3
2
1
0
M1_Ch8M
M1_Ch7M
M1_Ch6M
M1_Ch5M
M1_Ch4M
M1_Ch3M
M1_Ch2M
M1_Ch1M
7
6
5
4
3
2
1
0
M1_Vol7
M1_Vol6
M1_Vol5
M1_Vol4
M1_Vol3
M1_Vol2
M1_Vol1
M1_Vol0
Register Value
2
Desired Volume Setting in dB
Ч
(
) 210
+
=