PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 15

• Manufacturer Part Number: PEB2085
• Description: ISDN SubscribernAccess Controller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Pin Definitions and Functions of PEB 2085 (cont’d)
Pin No.
P-DIP-40
10
21
28
23
22
24
25
26
29
30
31
32
Semiconductor Group
Pin No.
P-LCC-44
11
24
31
26
25
27
28
29
32
33
34
35
Symbol
V
V
V
XTAL1
XTAL2
SR2
SR1
UFI
SX1
SX2
IDP0(DD)
IDP1(DU)
SSD
SSA
DD
Input (I)
Output (O)
–
–
–
I
O
I
O
O
O
O
I/O
I/O
Function
Digital ground
Analog ground
Power supply (5 V 5%)
Connection for crystal or external clock input
Connection for external crystal. Left
unconnected if external clock is used.
S Bus Receiver Input
S Bus Receiver Output (2.5 V reference)
Connection for external pre-filter for S Bus
receiver, if used.
S Bus Transmitter Output (positive)
S Bus Transmitter Output (negative)
IOM Data Port 0 (DD)
IOM Data Port 1 (DU)
IOM-1: IDP1: Open-drain with internal pull-
IOM-2: Open drain without internal pull-up
15
IDP0: Push-pull
resistor or push-pull (ADF2:ODS)
up resistor
PEB 2085