PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 86

• 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

WDG2[7:0] (Addr.: 03H) Watchdog 2
WDG2[7:0]
WDG3[7:0] (Addr.: 04H) Watchdog 3
WDG3[7:0]
PCMCTRL[3:0] (Addr.: 06H) PCM Bypass and loop Control, write protected,
Reset value = 00H
SRLOOP
RSLOOP
RBYPASS
SBYPASS
Note: If SRLOOP='1' and RSLOOP='1' only RSLOOP becomes active.
CONFPCM[7:0] (Addr.: 30H): Global Configuration of PCM outputs, write protected,
Reset value = 03H
NLPITU
NLPMOD
SOATTEN
Data Sheet
WDG2[7] WDG2[6] WDG2[5] WDG2[4] WDG2[3] WDG2[2] WDG2[1] WDG2[0]
WDG3[7] WDG3[6] WDG3[5] WDG3[4] WDG3[3] WDG3[2] WDG3[1] WDG3[0]
NLP
ITU
-
MOD
NLP
-
For watchdog test: Must be written with the defined value 99H as
the second of the three watchdog registers within 2 seconds
For watchdog test: Must be written with the defined value 1DH as
the last of the three watchdog registers within 2 seconds
'1': NLP comfort noise according to ITU
'0': NLP comfort noise subjective
only if NLPITU = '1':
'1': Attenuation of send path output enabled and controlled by echo
'1': Enables the internal loop from SO signal to RI signal
'0': Normal operation
'1': Enables the internal loop from RO signal to SI signal
'0': Normal operation
'1': Bypasses the RI input directly to the RO output
'0': Normal operation
'1': Bypasses the SI input directly to the SO output
'0': Normal operation
SOATT
EN
-
SOATT
MOD
-
86
'1':output signal is band limited noise
'0':output signal is zero, i.e. line is dead
ROATT
LOOP
SR
EN
ROATT
LOOP
MOD
RS
Register Description
BYPASS
DYN
SUB
Rev. 2, 2004-07-28
R
PEB 20954
PEF 20954
BYPASS
INVERR
SIGN
S