CS44L11 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
CS44L11 Datasheet PDF : 34 Pages
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4.8 Volume and Mixing Control (address 09h)
7
Reserved
0
6
Reserved
0
5
RMP_SP1
0
4
RMP_SP0
0
3
ATAPI3
1
2
ATAPI2
0
CS44L11
1
ATAPI1
0
0
ATAPI0
1
4.8.1
Ramp Speed (RMP_SP)
Default = 01
00 - Ramp speed = approximately 0.1 seconds
01 - Ramp speed = approximately 0.2 seconds
10 - Ramp speed = approximately 0.3 seconds
11 - Ramp speed = approximately 0.65 seconds
Function:
This feature is used in Single-Ended applications to reduce pops in the output caused by the DC-blocking
capacitor. When in Control Port Mode, the Ramp Speed sets the time for the PWM signal to linearly ramp
up and down from the bias point (50% PWM duty cycle). Refer to Section 6.4.
4.8.2
ATAPI Channel Mixing and Muting (ATAPI)
Default = 1001 - HP_A = L, HP_B = R (Stereo)
Function:
The CS44L11 implements the channel mixing functions of the ATAPI CD-ROM specification. Refer to
Table 10 and Figure 5 for additional information.
Note: All mixing functions occur prior to the digital volume control.
ATAPI3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ATAPI2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
ATAPI1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ATAPI0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
HP_A
MUTE
MUTE
MUTE
MUTE
R
R
R
R
L
L
L
L
[(L+R)/2]
[(L+R)/2]
[(L+R)/2]
[(L+R)/2]
Table 10. ATAPI Decode
HP_B
MUTE
R
L
[(L+R)/2]
MUTE
R
L
[(L+R)/2]
MUTE
R
L
[(L+R)/2]
MUTE
R
L
[(L+R)/2]
DS640PP4
19
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