W681307DG Datasheet, PDF (96/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM.

W681307
Network short term power estimation’s attacking time constant
This field defines the inertial delay utilized for the short term network power estimation. Raising the value of this field reduces the inertia
and will make the estimation more responsive whilst lowering the field will cause the power estimation algorithm to be less responsive to
bursts of energy on the network side.
13.4.3.3
VD_NETWORK_HANGOVER_TIME
Address
Access Mode Value At Reset Nominal Value
0x14D3 - 0x14D4
R/W
0x0009
0x0340
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
D3
VD_NETWORK_HANGOVER_TIME
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
D4
VD_NETWORK_HANGOVER_TIME
This field defines the inertial delay of the voice detection algorithm for the network side.
Following the detection of the speech on the network interface there is a programmable inertial delay (in PCM sample periods) following
the disappearance of the speech signal. For the duration of this delay period the speech is assumed to remain. If speech does not reappear
during this window then the echo cancellation unit will revert back to channel training mode.
13.4.3.4
VD_NETWORK_DEV_THRESHOLD
Address
Access Mode Value At Reset Nominal Value
0x14D5 - 0x14D6
R/W
0x0666
0x01B0
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
D5
VD_NETWORK_DEV_THRESHOLD
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
D6
VD_NETWORK_DEV_THRESHOLD
This field defines the instantaneous network power change that is deemed to correspond to speech and is used to detect short term
changes in voice level on the network interface.
Raising (lowering) this field will raise (lower) the change in network power required for the detection of speech.
- 96 -
Publication Release Date: May, 2007
Revision 1.3