W681307DG Datasheet, PDF (30/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM.

W681307
7.3.7
Address
0x14C0
0x14C1
0x14C2
0x14C3
0x14C4
0x14C5-
0x14C6
0x14C7-
0x14C8
0x14C9
0x14CA
0x14CB-
0x14CC
0x14CD-
0x14CE
0x14CF-
0x14D0
0x14D1
0x14D2
0x14D3-
0x14D4
0x14D5-
0x14D6
0x14D7-
0x14D8
0x14D9-
0x14DA
0x14DB-
0x14DC
0x14DD
0x14DE
0x14DF-
0x14E0
0x14E1-
0x14E2
0x14E3
0x14E4
0x14E5
0x14E6
0x14E7
0x14E8
0x14E9
0x14EA
Echo Canceller Registers Overview
Name
UP_CONFIG
UP_RESET
EC_BELTA
Specific Register
LS_BUILD_UP_TIME
Mode
R/W
R/W
R/W
R/W
R/W
Value At
Reset
0x00
0x08
0x03
0x03
0x07
LS_MAX_ATTEN
R/W 0x1CA8
LS_MIN_ATTEN
R/W
DT_LONG_ACOUSTIC_ATTA
CK_TC
R/W
DT_SHORT_ACOUSTIC_ATT
ACK_TC
R/W
DT_ACOUSTIC_HANGOVER_
TIME
R/W
DT_ACOUSTIC_DEV_THRES
HOLD
R/W
DT_SHORT_ACOUSTIC_THR
ESHOLD
R/W
VD_LONG_NETWORK_ATTA
CK_TC
R/W
VD_SHORT_NETWORK_ATT
ACK_TC
R/W
VD_NETWORK_HANGOVER
_TIME
R/W
VD_NETWORK_DEV_THRES
HOLD
R/W
VD_LONG_NETWORK_THRE
SHOLD
R/W
0xFFFF
0x09
0x0B
0x0020
0x0666
0x0404
0x09
0x0B
0x0009
0x0666
0x0666
VD_SHORT_NETWORK_THR
ESHOLD
R/W
VD_CUT_OFF_NETWORK_P
OWER
R/W
Specific Register
R/W
ACOUSTIC / NETWORK
Active Status
R
AGC_THRESHOLD
R/W
0x040E
0x0666
0x00
0x00
0x0800
AGC_NOISE_THRESHOLD
R/W 0x00C8
AGC_MAX_SG
R/W
0x02
Specific Register
AGC_LG_ATTACK_TC
AGC_ST_ATTACK_TC
NS_STTACK_Tcand_GAIN
NS_ATTEN_DW_UP_TC
NS_Active_Power_MSB
NS_Active_Power_LSB
R/W
0x0F
R/W
0x0B
R/W
0x09
R/W
0x00
R/W
0x00
R/W
0x00
R/W
0x00
Function
Configuration for the echo cancellation unit
Enables the three buffers used by the echo cancellation FIR
filter
The echo cancellation update gain
Blocked for test modes
Controls acoustic suppression factor convergence towards
target
Maximum attenuation value that will be utilised by the
acoustic suppression algorithm
Minimum attenuation value that will be utilised by the
acoustic suppression algorithm
Attack time for long term acoustic power estimation
Attack time for short term acoustic power estimation
Define the inertial delay of the double talk detection
algorithm for acoustic side
Define the instantaneous acoustic power change
Define the power threshold
Attack time for long term network power estimation
Attack time for short term network power estimation
Define the inertial delay of the voice detection algorithm for
the network side
Define the instantaneous network power change
Minimum power level that constitutes speech over the
network interface, as measured by the long term power
estimation algorithm
Minimum power level that constitutes speech over the
network interface, as measured by the short term power
estimation algorithm
Configurable bias for network power estimation
Blocked for test modes
Acoustic side and Network side active status
The AGC threshold is set the maximum output power from
AGC module
The calculated input power is compared with the
AGC_NOISE_THRESHOLD
The AGC module has maximum gain to amplifier the echo
cancelled input signal
Blocked for test modes
The field defines the inertial delay utilized for the long term
gain estimation
Attack time for short term AGC power estimation
Set Noise_Suppressor_Index and ShortTermPowerTC
Set Noise_rise_TC and Noise_fall_TC
Set noise threshold
Set noise threshold
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Publication Release Date: May, 2007
Revision 1.3