TLV320AIC3106-Q1 Datasheet, PDF (60/102 Pages) Texas Instruments – LOW-POWER STEREO AUDIO CODEC FOR PORTABLE AUDIO/TELEPHONY

TLV320AIC3106-Q1
SLAS663A – AUGUST 2009 – REVISED JANUARY 2010
BIT
READ/
WRITE
D7–D6 R/W
D5–D1 R/W
D0
R/W
Table 36. Page 0 / Register 28: Left AGC Control Register C
RESET
VALUE
00
00 000
0
DESCRIPTION
Noise Gate Hysteresis Level Control
00: Hysteresis = 1 dB
01: Hysteresis = 2 dB
10: Hysteresis = 3 dB
11: Hysteresis is disabled
Left AGC Noise Threshold Control
00 000: Left AGC Noise/Silence Detection disabled
00 001: Left AGC noise threshold = –30 dB
00 010: Left AGC noise threshold = –32 dB
00 011: Left AGC noise threshold = –34 dB
…
11 101: Left AGC noise threshold = –86 dB
11 110: Left AGC noise threshold = –88 dB
11 111: Left AGC noise threshold = –90 dB
Left AGC Clip Stepping Control
0: Left AGC clip stepping disabled
1: Left AGC clip stepping enabled
BIT
READ/
WRITE
D7
R/W
D6–D4 R/W
D3–D2 R/W
D1–D0 R/W
Table 37. Page 0 / Register 29: Right AGC Control Register A
RESET
VALUE
0
000
00
00
DESCRIPTION
Right AGC Enable
0: Right AGC is disabled
1: Right AGC is enabled
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
Right AGC Attack Time
These time constants will not be accurate when double rate audio mode is enabled.
00: Right AGC attack time = 8 ms
01: Right AGC attack time = 11 ms
10: Right AGC attack time = 16 ms
11: Right AGC attack time = 20 ms
Right AGC Decay Time
These time constants will not be accurate when double rate audio mode is enabled.
00: Right AGC decay time = 100 ms
01: Right AGC decay time = 200 ms
10: Right AGC decay time = 400 ms
11: Right AGC decay time = 500 ms
BIT
READ/
WRITE
D7–D1 R/W
D0
R/W
Table 38. Page 0 / Register 30: Right AGC Control Register B
RESET
VALUE
1111 111
0
DESCRIPTION
Right AGC Maximum Gain Allowed
0000 000: Maximum gain = 0 dB
0000 001: Maximum gain = 0.5 dB
0000 010: Maximum gain = 1 dB
…
1110 110: Maximum gain = 59 dB
1110 111–1111 111: Maximum gain = 59.5 dB
Reserved. Write only zero to this register bit.
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