peb2025 ETC-unknow, peb2025 Datasheet - Page 3

• Manufacturer Part Number: peb2025
• Description: Isdn Exchange Power Controller
• Manufacturer: ETC-unknow

Pin Definitions and Functions
Pin No.
P-DIP-22
17
22
11
19, 18, 16,
15
12
21, 20, 14,
13
1
3
2
6, 5, 4
8, 7
10
Semiconductor Group
Pin No.
P-LCC-28
21, 22, 23
1
14
25, 24, 20,
19
15
28, 26, 18,
16
2
4
3
8, 7, 5
11, 9
13
Symbol
V
V
GND
aF0 - aF3
R
CLC0 -
CLC3
CS
WR
RD
D0 - D2
A0, A1
RES
BAT
CC
Imax
Input (I)
Output (O)
I
I
I
O
I
I
I
I
I
I/O
I
I
3
Function
Supply Voltage: This pin has to be
connected to the negative supply
voltage.
drivers.
Digital Supply Voltage: + 5V
Ground: Digital
Note: GND has to be connected to
a-Line Feeding: aF
outputs
Current Limit: Using an external resistor
connected between
maximum limit is the same to all line
drivers.
Current Limit Characteristic: By
connecting external capacitors between
CLC
off-characteristics of the line drivers are
defined.
Chip Select: A logic low on CS enables
RD and WR communication between the
processor and the IEPC.
Write: A logic low on this pin, while CS is
low, enables the IEPC to accept
command words from the processor.
Read: A low on this pin (while CS is low)
enables the IEPC to release status onto
the data bus for the processor.
Data Bus: Control, status and command
information are transferred via this bus
between IEPC and processor.
Address Bus: These inputs select the
internal registers while chip select is
active.
Reset: A logic high on the RES input sets
the device into the initial state.
i
and GND, the time-dependent turn
ground battery (positive supply
voltage)
V
BAT
supplies power to all line
i
are the line driver
R
Imax
and GND, the
PEB 2025