Audio Control FOUR.1i Specifications download pdf (Page 65)

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TLV320AIC34

SLAS538A – OCTOBER 2007 – REVISED NOVEMBER 2007

Page 0 / Register 31: Right-AGC Control Register C

READ/ RESET

BIT DESCRIPTION

WRITE VALUE

D7 – D6 R/W 00 Noise Gate Hysteresis Level Control

00: Hysteresis = 1 dB

01: Hysteresis = 2 dB

10: Hysteresis = 3 dB

11: Hysteresis is disabled.

D5 – D1 R/W 00 000 Right-AGC Noise Threshold Control

00 000: Right-AGC noise/silence detection disabled

00 001: Right-AGC noise threshold = – 30 dB

00 010: Right-AGC noise threshold = – 32 dB

00 011: Right-AGC noise threshold = – 34 dB

…

11 101: Right-AGC noise threshold = – 86 dB

11 110: Right-AGC noise threshold = – 88 dB

11 111: 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

READ/ RESET

BIT DESCRIPTION

WRITE VALUE

D7 – D0 R 0000 0000 Left-Channel Gain Applied by AGC Algorithm

1110 1000: Gain = – 12 dB

1110 1001: Gain = – 11.5 dB

1110 1010: Gain = – 11 dB

…

0000 0000: Gain = 0 dB

0000 0001: Gain = 0.5 dB

…

0111 0110: Gain = 59 dB

0111 0111: Gain = 59.5 dB

Page 0 / Register 33: Right-AGC Gain Register

READ/ RESET

BIT DESCRIPTION

WRITE VALUE

D7 – D0 R 0000 0000 Right-Channel Gain Applied by AGC Algorithm

1110 1000: Gain = – 12 dB

1110 1001: Gain = – 11.5 dB

1110 1010: Gain = – 11 dB

…

0000 0000: Gain = 0 dB

0000 0001: Gain = 0.5 dB

…

0111 0110: Gain = 59 dB

0111 0111: Gain = 59.5 dB

Product Folder Link(s): TLV320AIC34

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Audio Control FOUR.1i Specifications Page 65

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