SLAS497C – AUGUST 2006 – REVISED DECEMBER 2008 ............................................................................................................................................. www.ti.com
Page 0 / Register 31:
Right AGC Control Register C
BIT
READ/
RESET
DESCRIPTION
WRITE
VALUE
D7–D6
R/W
00
Noise Gate Hysteresis Level Control
00: Hysteresis is disabled
01: Hysteresis = 1-dB
10: Hysteresis = 2-dB
11: Hysteresis = 4-dB
D5–D1
R/W
00000
Right AGC Noise Threshold Control
00000: Right AGC Noise/Silence Detection disabled
00001: Right AGC noise threshold = –30-dB
00010: Right AGC noise threshold = –32-dB
00011: Right AGC noise threshold = –34-dB
…
11101: Right AGC noise threshold = –86-dB
11110: Right AGC noise threshold = –88-dB
11111: Right AGC noise threshold = –90-dB
D0
R/W
0
Right AGC Clip Stepping Control
0: Right AGC clip stepping disabled
1: Right AGC clip stepping enabled
Page 0 / Register 32:
Left AGC Gain Register
BIT
READ/
RESET
DESCRIPTION
WRITE
VALUE
D7–D0
R
00000000
Left Channel Gain Applied by AGC Algorithm
1110 1000: Gain = –12.0-dB
1110 1001: Gain = –11.5-dB
1110 1010: Gain = –11.0-dB
…
0000 0000: Gain = 0.0-dB
0000 0001: Gain = +0.5-dB
…
0111 0110: Gain = +59.0-dB
0111 0111: Gain = +59.5-dB
Page 0 / Register 33:
Right AGC Gain Register
BIT
READ/
RESET
DESCRIPTION
WRITE
VALUE
D7-D0
R
00000000
Right Channel Gain Applied by AGC Algorithm
1110 1000: Gain = –12.0-dB
1110 1001: Gain = –11.5-dB
1110 1010: Gain = –11.0-dB
…
0000 0000: Gain = 0.0-dB
0000 0001: Gain = +0.5-dB
…
0111 0110: Gain = +59.0-dB
0111 0111: Gain = +59.5-dB
50
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