PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 85

• 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

WP[7:0] (Addr.: 01H) Write Protection, Reset Value 'protected'= NOT 95H
WP[7:0]
IRMASK[6:0] (Addr.: 07H) Interrupt Mask, Reset Value = 7FH
If an interrupt source is masked the information is shown in the STATUS register but not
in the IRREQ register. Masking and unmasking does not affect the interrupt source. A
new interrupt will be generated after masking and unmasking, if interrupt source is active
(as indicated in STATUS register).
WDOGMASK
SYNCIMASK
CAMASK
TTMASK
TEMASK
UCCMASK
TSMMASK
WDG1[7:0] (Addr.: 02H) Watchdog 1
WDG1[7:0]
Data Sheet
WDG1[7] WDG1[6] WDG1[5] WDG1[4] WDG1[3] WDG1[2] WDG1[1] WDG1[0]
WP[7]
-
WDOG
MASK
WP[6]
Write access to the write protected configuration registers is released
by writing the value 95H to this register. The write protection is
activated by writing any other value.
'1': Watchdog condition does not cause an interrupt
'0': normal operation
'1': Incorrect SYNCI pulse does not cause an interrupt
'0': normal operation
'1': coefficient available is ignored
'0': normal operation
'1': test termination is ignored
'0': normal operation
'1': timer expired is ignored
'0': normal operation
'1': UCC interrupt is ignored
'0': normal operation
'1': timeslot monitor values available is ignored
'0': normal operation
For watchdog test: Must bewritten with the defined value AAH as
the first of the three watchdog registers within 2 seconds
SYNCI
MASK
WP[5]
MASK
WP[4]
CA
85
MASK
WP[3]
TT
MASK
WP[2]
TE
Register Description
MASK
WP[1]
UCC
Rev. 2, 2004-07-28
PEB 20954
PEF 20954
MASK
WP[0]
TSM