PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 105

• 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

CONFSCU8[7:0] (Addr.: 19H), Configuration of speech control unit 8, write protected,
Reset value = EEH
BNMAXSL[3:0]
BNMAXRL[3:0]
CONFSCU9[7:0] (Addr.: 1AH), Configuration of speech control unit 9, write protected,
Reset value = 44H
Bypass of Non Linear Processor (NLP), Subtractor and Attenuator (Receive and Send
path):
DISBY
PSBY
Disable/Bypass of NLP:
DISNLPDIS
PSNLPDIS
Data Sheet
BNMAX
DISBY
SL[3]
BNMAX
PSBY
SL[2]
"0000":
"0001":
"0010":
"0011":
"0100":
...
"1110":
"1111":
"0000":
"0001":
"0010":
"0011":
"0100":
...
"1110":
"1111":
'1': bypass via 2100 Hz Disabler with phase shift
'0': no disable via 2100 Hz Disabler without phase shift
'1': disable via 2100 Hz Disabler even without phase shift
'0': no disable via 2100 Hz Disabler even with phase shift
'1': disable via 2100 Hz Disabler with phase shift
Maximum send path level for background noise measurement
Maximum receive path level for background noise measurement
'0': no bypass via 2100 Hz Disabler without phase shift
'1': bypass via 2100 Hz Disabler even without phase shift
'0': no bypass via 2100 Hz Disabler even with phase shift
DISNLP
BNMAX
SL[1]
DIS
minus infinite
-66 dBm0
-63 dBm0
-60 dBm0
-57 dBm0
-27 dBm0
-24 dBm0 (not possible)
minus infinite
-66 dBm0
-63 dBm0
-60 dBm0
-57 dBm0
-27 dBm0
-24 dBm0 (not possible)
BNMAX
PSNLP
SL[0]
DIS
105
BNMAX
HRES
RL[3]
DIS
BNMAX
HRES
RL[2]
PS
Register Description
BNMAX
PSLM
RL[1]
RES
Rev. 2, 2004-07-28
PEB 20954
PEF 20954
BNMAX
RL[0]
RES
DIS