W681307DG Datasheet, PDF (98/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM.

W681307
Bit 7
Reserved
Bit 6
Reserved
Bit 5
Reserved
Bit 4
Reserved
Bit 3
Reserved
Bit 2
Reserved
Bit 1
Reserved
Bit 0
Blocked
(for test modes)
13.4.4
ACOUSTIC / NETWORK Active Status
Address
0x14DE
Access Mode Value At Reset Nominal Value
R
0x00
Bit 7
RESERVED
Bit 6
RESERVED
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
AcousticActive
NetworkActive
Blocked
(for test modes)
Blocked
(for test modes)
Blocked
(for test modes)
Blocked
(for test modes)
AcousticActive
NetworkActive
13.4.5
13.4.5.1
= 1, reflect the status of acoustic power
= 1, reflect the status of network power.
AGC Control Registers
AGC_THRESHOLD
Address
Access Mode Value At Reset Nominal Value
0x14DF - 0x14E0
R/W
0x0800
0x1000
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
DF
AGC_THRESHOLD
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
E0
AGC_THRESHOLD
The AGC threshold is set the maximum output power from AGC module. The purpose is set properly gain to prevent voice signal
clipping.
13.4.5.2
AGC_NOISE_THRESHOLD
Address
Access Mode Value At Reset Nominal Value
0x14E1 - 0x14E2
R/W
0x00C8
0x0100
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
E1
AGC_NOISE_THRESHOLD
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
E2
AGC_NOISE_THRESHOLD
The calculated input power with time constant AGC_ST_ATTACK_TC is less than the AGC_NOISE_THRESHOLD, then AGC gain is
set to unit gain. It is assumed that the input power is background signal.
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Publication Release Date: May, 2007
Revision 1.3