Westermo ID-90 - Manual (Page 86)

86 6607-2204
Block diagram
Supply voltage
Protection
circuits
Isolated
power
supply
Flash
memory
RAM
CODEC
V.90
modem
chip set
ISDN
communication
controller
16-bit
MCU
Serial
EE
PROM
IOM2
UA
R
T
PIO PIO
CTRL D
ATA
ADDR.
Digital
I/F
TTL TTL
RS-
232
RS-
485
DTE Alarm inputs
Base
Configuration
Optional
ISDN
S0
I/O Buffer
Config.
SW