Datasheet

TLV320ADC3101
www.ti.com ...................................................................................................................................... SLAS553A – NOVEMBER 2008 – REVISED SEPTEMBER 2009
Page 0 / Register 87: Left AGC Control 2
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 – D6 R/W 00 00: Left AGC hysteresis setting of 1 dB
01: Left AGC hysteresis setting of 2 dB
10: Left AGC hysteresis setting of 4 dB
11: Left AGC hysteresis disabled
D5 – D1 R/W 00 000 00 000: Left AGC noise/silence detection is 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
D0 R/W 0 0: Disable clip stepping for AGC
1: Enable clip stepping for AGC
Page 0 / Register 88: Left AGC Maximum Gain
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 R 0 Reserved. Do not write any value other than reset value.
D6 – D0 R/W 111 1111 000 0000: Left AGC maximum gain = 0 dB
000 0001: Left AGC maximum gain = 0.5 dB
000 0010: Left AGC maximum gain = 1 dB
...
101 0000: Left AGC maximum gain = 40 dB
101 0001 – 111 1111: Reserved. Do not use.
Page 0 / Register 89: Left AGC Attack Time
BIT READ/ RESET DESCRIPTION
WRITE VALUE
D7 – D3 R/W 0000 0 0000 0: Left AGC attack time = 1 × (32/f
S
)
0000 1: Left AGC attack time = 3 × (32/f
S
)
0001 0: Left AGC attack time = 5 × (32/f
S
)
0001 1: Left AGC attack time = 7 × (32/f
S
)
0010 0: Left AGC attack time = 9 × (32/f
S
)
...
1111 0: Left AGC attack time = 61 × (32/f
S
)
1111 1: Left AGC attack time = 63 × (32/f
S
)
D2 – D0 R/W 000 000: Multiply factor for the programmed left AGC attack time = 1
001: Multiply factor for the programmed left AGC attack time = 2
010: Multiply factor for the programmed left AGC attack time = 4
...
111: Multiply factor for the programmed left AGC attack time = 128
Page 0 / Register 90: Left AGC Decay Time
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 – D3 R/W 0000 0 0000 0: Left AGC decay time = 1 × (512/f
S
)
0000 1: Left AGC decay time = 3 × (512/f
S
)
0001 0: Left AGC decay time = 5 × (512/f
S
)
0001 1: Left AGC decay time = 7 × (512/f
S
)
0010 0: Left AGC decay time = 9 × (512/f
S
)
...
1111 0: Left AGC decay time = 61 × (512/f
S
)
1111 1: Left AGC decay time = 63 × (512/f
S
)
D2 – D0 R/W 000 000: Multiply factor for the programmed left AGC decay time = 1
001: Multiply factor for the programmed left AGC decay time = 2
010: Multiply factor for the programmed left AGC decay time = 4
...
111: Multiply factor for the programmed left AGC decay time = 128
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