PCM3793RHB BURR-BROWN [Burr-Brown Corporation], PCM3793RHB Datasheet - Page 42

• Manufacturer Part Number: PCM3793RHB
• Description: 16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

PCM3793
PCM3794
SLES193A – AUGUST 2006 – REVISED SEPTEMBER 2006
42
IDX[6:0]: 101 0011b (53h): Register 83
RALC: Automatic Level Control (ALC) Enable for Recording
Default value: 0
Automatic level control can be enabled with some parameters for microphone input or lower analog source level.
RRTC: ALC Recovery Time Control for Recording
Default value: 0
This bit is used to select the recovery time for the ALC. The response is shown in
RATC: ALC Attack Time Control for Recording
Default value: 0
This bit is used to select the attack time for the ALC. The response is shown in
Register 83
RALC = 0
RALC = 1
RRTC = 0
RRTC = 1
RATC = 0
RATC = 1
Attack
B15
+FS
–FS
+FS
–FS
0
IDX6
B14
Output Data
Input Data
IDX5
B13
Figure 36. Attack and Recovery Time Response
IDX4
B12
Disable (default)
Enable
3.4 s (default)
13.6 s
1 ms (default)
2 ms
IDX3
B11
Attack Time
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IDX2
B10
IDX1
B9
Recovery
+FS
–FS
+FS
–FS
IDX0
B8
Output Data
RALC
B7
Input Data
RSV
B6
RRTC
B5
Figure
RATC
Figure
B4
36.
Recovery Time
36.
RCP1
B3
RCP0
T0166-01
B2
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RLV1
B1
RLV0
B0