W681307DG Datasheet, PDF (94/160 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
Bit 2
Bit 1
Bit 0
DT_LONG_ACOUSTIC_ATTACK_TC
Acoustic long term power estimation’s attacking time constant.
This field defines the inertial delay utilized for the long term acoustic 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 acoustic.
13.4.2.2
Address
0x14CA
DT_SHORT_ACOUSTIC_ATTACK_TC
Access Mode Value At Reset Nominal Value
R/W
0x0B
0x0B
Bit 7
RESERVED
Bit 6
RESERVED
Bit 5
RESERVED
Bit 4
RESERVED
Bit 3
Bit 2
Bit 1
Bit 0
DT_SHORT_ACOUSTIC_ATTACK_TC
Acoustic short term power estimation’s attacking time constant
This field defines the inertial delay utilized for the short term acoustic 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 acoustic side.
13.4.2.3
DT_ACOUSTIC_HANGOVER_TIME
Address
Access Mode Value At Reset Nominal Value
0x14CB - 0x14CC
R/W
0x0020
0x0340
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
CB
DT_ACOUSTIC_HANGOVER_TIME
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CC
DT_ACOUSTIC_HANGOVER_TIME
This field defines the inertial delay of the double talk detection algorithm for acoustic side.
Following the detection of the double talk condition there is a programmable inertial delay (in PCM sample periods 125us) following the
disappearance of the double talk condition. For the duration of this delay period the double talk condition is assumed to remain. If double
talk does not reappear during this window then the echo cancellation unit will revert back to acoustic training mode.
13.4.2.4
DT_ ACOUSTIC _DEV_THRESHOLD
Address
Access Mode Value At Reset Nominal Value
0x14CD - 0x14CE
R/W
0x0666
0x0040
Bit 15
CD
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
DT_ ACOUSTIC_DEV_THRESHOLD
- 94 -
Bit 9
Bit 8
Publication Release Date: May, 2007
Revision 1.3