PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 104

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PEF 20954 HT V1.1

Manufacturer Part Number
PEF 20954 HT V1.1
Description
IC ECHO CANCELLER DGTL TQFP144
Manufacturer
Infineon Technologies
Datasheet

Specifications of PEF 20954 HT V1.1

Function
Smart Integrated Digital Echo Canceller (SIDEC)
Interface
PCM, Serial, UCC
Number Of Circuits
1
Voltage - Supply
3 V ~ 3.6 V
Current - Supply
350mA
Power (watts)
900mW
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
144-LFQFP
Includes
Double Talk Detection
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
PEF20954HTV1.1
SP000007505
CONFSCU6[7:0] (Addr.: 17H): Configuration of speech control unit 6, write protected,
Reset value = 2AH
RELADD[2:0]
RIMIN[2:0]
Offset:
OFCNT[1:0]
CONFSCU7[7:0] (Addr.: 18H): Configuration of speech control unit 7, write protected,
Reset value = 8AH
NLP comfort noise:
NOISEINC[3:0]
BNINC[1:0]
BNDEC[1:0]
Data Sheet
ADD[2]
NOISE
INC[3]
REL
ADD[1]
NOISE
INC[2]
REL
Safety increment for the residual echo limiter threshold
"000": 0 dB
"100": 12 dB "101": 15 dB "110": 18 dB "111": 21 dB
Reduction of receive path level for determination of the temporary
NLP threshold
"000": 0 dB
"100": 12 dB "101": 15 dB "110": 18 dB "111": 21 dB
Count period for offset measurements
"00": disabled
"10": 16 ms
Increase of the noise level for maximum level evaluation
"0000": -6 dB
"0010": -3 dB
"0100": +0 dB
"0110": +3 dB
"1000": +6 dB
"1010": +9 dB
"1100": +12 dB
"1110": +15 dB
Incrementing period for background noise evaluation counter
"00": 64 ms
"00": 16 ms
Decrementing period for background noise evaluation counter
ADD[0]
NOISE
INC[1]
REL
"001": 3 dB
"001": 3 dB
"01": 32 ms
"01": 8 ms
NOISE
MIN[2]
INC[0]
RI
104
MIN[1]
INC[1]
BN
RI
"010": 6 dB
"010": 6 dB
"01": 64 ms
"11": 1 ms
"0001": -4.5 dB
"0011": -1.5 dB
"0101": +1.5 dB
"0111": +4.5 dB
"1001": +7.5 dB
"1011": +10.5 dB
"1101": +13.5 dB
"1111": +16.5 dB
"10": 16 ms
"10": 4 ms
MIN[0]
INC[0]
BN
RI
"011": 9 dB
"011": 9 dB
"11": 8 ms
"11": 2 ms
Register Description
DEC[1]
CNT[1]
OF
BN
Rev. 2, 2004-07-28
PEB 20954
PEF 20954
DEC[0]
CNT[0]
OF
BN

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