PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 103

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

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

CONFSCU4[7:0] (Addr.: 15H): Configuration of speech control unit 4, write protected,
Reset value = A7H
Overcompensation:
OCINC[1:0]
OCDEC[1:0]
SIADD[1:0]
OCAMRES
OCHRES
CONFSCU5[7:0] (Addr.: 16H): Configuration of speech control unit 5, write protected,
Reset value = 84H
Non Linear Processor (NLP) activation
NLPRANGE[4:0] Operating range for the NLP
SWMINATT[2:0]
Data Sheet
RANGE
INC[1]
NLP
OC
[4]
RANGE
INC[0]
NLP
OC
[3]
"00": 32 ms
"00": 16 ms
Safety distance for SO > SI + SIADD comparison
"00": +0 dB
'0':no reset via overcompensation detection
'1': reset via overcompensation detection (H-Register reset only)
"00000":
"00001":
"00010"
"00011":
"00100":
...
"10000":
...
"11000":
Minimum attenuation for switchover to final residual echo level
"000": 0 dB
"100": 12 dB "101": 15dB "110": 18dB "111": 21dB
Increment period for overcompensation evaluation
Decrement period for overcompensation evaluation
'0': no reset of attenuation meters in case of overcompensation
'1': reset of attenuation meters only in case of overcompensation
RANGE
DEC[1]
NLP
OC
[2]
"01": 16 ms
"01": 8 ms
"01": +3 dB
minus infinite: no residual echo limitation
-66 dBm0
-63 dBm0
-60 dBm0
-57 dBm0
-21 dBm0
+3 dBm0
"001": 3 dB
RANGE
DEC[1]
NLP
OC
[1]
103
RANGE
ADD[1]
NLP
[0]
"10": 8 ms
"10": 4 ms
"10": +6 dB
"010": 6 dB
SI
SWMIN
ADD[0]
ATT[2]
SI
"11": 4 ms
"11": 2 ms
"11": +9 dB
"011": 9 dB
Register Description
AMRES
SWMIN
ATT[1]
OC
Rev. 2, 2004-07-28
PEB 20954
PEF 20954
SWMIN
ATT[0]
HRES
OC