CDB3308 Cirrus Logic Inc, CDB3308 Datasheet - Page 38

• Manufacturer Part Number: CDB3308
• Description: BOARD EVAL FOR CS3308 VOL CTRL
• Manufacturer: Cirrus Logic Inc

Specifications of CDB3308

• Main Purpose: Audio, Volume Control
• Embedded: No
• Utilized Ic / Part: CS3308
• Primary Attributes: 8 Single-Ended Analog Inputs and Outputs, USB or RS232 Interface
• Secondary Attributes: Graphic User Interface
• Description/function: Audio DSPs
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• For Use With/related Products: CS3308
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1496

38
7.14
7.14.1 Master 2 Mute (Bit 1)
7.14.2 Master 2 ¼ dB Control (Bit 0)
7.15
7.16
7.16.1 Master 3 Volume Control (Bits 7:0)
M3_Ch8M
Reserved
M3_Vol7
7
7
7
Master 2 Control - Address 15h
Master 3 Mask - Address 16h
Each bit in this register serves as a Master 3 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 3 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 3 volume and muting controls.
This register defaults to FFh (all channels unmasked).
Master 3 Volume - Address 17h
Default = 0
Function:
Default = 0
Function:
Default = 11010010
Function:
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 CS3308’s analog range of +22 dB to -96 dB are valid;
however, the volume of each channel will be limited to the CS3308’s analog range (see
its” on page
See
This bit controls the Master 2 mute state. When set, the Master 1 mute condition is active. When
cleared, the Master 2 mute condition is released.
See
When set, ¼ dB of gain will be added to the Master 2 volume level.
See
The Master 3 volume control register allows the user to simultaneously gain or attenuate all un-
masked channels from +22 dB to -96 dB in 0.5 dB increments. The volume changes are implemented
M3_Ch7M
Reserved
M3_Vol6
Table 5 on page 31
“Muting Controls” on page 21
Table 6 on page 32
6
6
6
20).
M3_Ch6M
Reserved
M3_Vol5
5
5
5
for example register settings.
for an example of volume settings using the ¼ dB control.
M3_Ch5M
Reserved
M3_Vol4
for more information about the muting behavior of the CS3308.
4
4
4
M3_Ch4M
Reserved
M3_Vol3
3
3
3
M3_Ch3M
Reserved
M3_Vol2
2
2
2
M3_Ch2M
M2_Mute
M3_Vol1
1
1
1
“Volume Lim-
M3_Ch1M
CS3308
M3_Vol0
M2_Qtr
DS702F1
0
0
0