Datasheet
TLV320AIC3107
SLOS545D –NOVEMBER 2008 –REVISED DECEMBER 2014
www.ti.com
Table 35. Page 0 / Register 29: Right AGC Control Register A
BIT READ/ RESET DESCRIPTION
WRITE VALUE
D7 R/W 0 Right AGC Enable
0: Right AGC is disabled
1: Right AGC is enabled
D6-D4 R/W 000 Right AGC Target Level
000: Right AGC target level = –5.5 dB
001: Right AGC target level = –8 dB
010: Right AGC target level = –10 dB
011: Right AGC target level = –12 dB
100: Right AGC target level = –14 dB
101: Right AGC target level = –17 dB
110: Right AGC target level = –20 dB
111: Right AGC target level = –24 dB
D3–D2 R/W 00 Right AGC Attack Time
These time constants will not be accurate when double rate audio mode is enabled.
00: Right AGC attack time = 8-msec
01: Right AGC attack time = 11-msec
10: Right AGC attack time = 16-msec
11: Right AGC attack time = 20-msec
D1–D0 R/W 00 Right AGC Decay Time
These time constants will not be accurate when double rate audio mode is enabled.
00: Right AGC decay time = 100-msec
01: Right AGC decay time = 200-msec
10: Right AGC decay time = 400-msec
11: Right AGC decay time = 500-msec
Table 36. Page 0 / Register 30: Right AGC Control Register B
BIT READ/ RESET DESCRIPTION
WRITE VALUE
D7–D1 R/W 1111111 Right AGC Maximum Gain Allowed
0000000: Maximum gain = 0.0 dB
0000001: Maximum gain = 0.5 dB
0000010: Maximum gain = 1.0 dB
…
1110110: Maximum gain = 59.0 dB
1110111–111111: Maximum gain = 59.5 dB
D0 R/W 0 Reserved. Write only zero to this register bit.
Table 37. 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 = 1 dB
01: Hysteresis = 2 dB
10: Hysteresis = 4 dB
11: Hysteresis is disabled
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
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