PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 36

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

Semiconductor Group
Pin No.
P-LCC-44
2.2.1.5
15
14
6
4
2.2.1.6
44
43
42
39
38
41
40
19
U-Interface Pins
Power Controller Pins
Pin No.
T-QFP64
M-QFP64
29
28
16
13
5
4
3
62
61
2
1
36
Symbol
AIN
BIN
AOUT
BOUT
PCD0
PCD1
PCD2
PCA0
PCA1
PCRD
PCWR
INT
Input (I)
Output (O)
I
I
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
36
Function
Differential U-Interface input: Connect
to hybrid.
Differential U-Interface input: Connect
to hybrid.
Differential U-Interface output:
Connect to hybrid.
Differential U-Interface output:
Connect to hybrid.
Data bus of power controller interface:
LSB. Connect to VDD if not used.
Data bus of power controller interface:
Connect to VDD if not used.
Data bus of power controller interface:
MSB. Connect to VDD if not used.
Address bus of power controller
interface.
Address bus of power controller
interface.
Power controller interface read
request: Low active.
Power controller interface write
request: Low active.
Interrupt: Change-sensitive. After a
change of level has been detected the
C/I code "INT" will be issued on
IOM
®
-2. Tie to GND if not used.
Pin Descriptions
Data Sheet 01.99
PEB 2091
PEF 2091