peb20954 Infineon Technologies Corporation, peb20954 Datasheet - Page 18

• Manufacturer Part Number: peb20954
• Description: Smart Integrated Digital Echo Canceller Sidec
• Manufacturer: Infineon Technologies Corporation

Preliminary Data Sheet
Table 4
Table 5
Table 6
Pin No. Symbol
Pin No. Symbol
Pin No. Symbol
27
28
29
30
63
62
33
34
84
83
UPIO0
UPIO1
UPIO2
UPIO3
UPRES
UPRES
DISWD
UPRESI
SI
RI
Microcontroller Port Extension
Processor Watchdog Circuit
Speech Highways
I/O, PU/PD
I/O, PU/PD
I/O, PU/PD
I/O, PU
I/O, PU
I/O, PU
I/O, PU
O
O
I, PU
I, PU
I, PD
I, PD
Function
Pin that can be read and controlled by the on
board processor via register UPIO
Pin that can be read and controlled by the on
board processor via register UPIO
Pin that can be read and controlled by the on
board processor via register UPIO
Pin that can be read and controlled by the on
board processor via register UPIO
Function
write predefined values to the registers WDG1
to WDG3 in this sequence within 2 s and
DISWD=’1’. Also active if PORES=’0’ or
UPRESI=’0’
Same as UPRES, but low active
Disable of P-Reset on active watchdog
condition if set to low
Produces a reset signal at UPRES, UPRES if
set to low
Function
2.048 Mbit/s Send speech highway input. Start
of timeslot 0, bit 7 can be flexibly aligned to the
SYNCI/SYNCO pulse in 122 ns steps via
registers SIALIGN and PHALIGN[3:2]
2.048 Mbit/s Receive speech highway input.
Start of timeslot 0, bit 7 can be flexibly aligned
to the SYNCI/SYNCO pulse in 122 ns steps via
registers RIALIGN and PHALIGN[1:0]
P-Reset. High pulse (125 s) if the P fails to
18
Pin Descriptions
PEB 20954
PEF 20954
04.99