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2.4 Location of Connectors
2.5 Block Diagram
<
8 2-65 8 2-44
J3
10-30
SER0
SER1
RS-485
V DC
RS-485
<
8 24'4
#
SER0 RS-232
24 V DC
Switch Mode
Power Supply
LED's
Real Time Clock
32 or 64 KB
EEPROM or
FRAM
Daughterboard Connector
J6
J9
J7
SER1 RS-232
Ethernet
32 KB
SRAM
ATmega128
AVR RISC uC
128 KB Flash ROM
4 KB EEPROM
2 8-bit & 2 16-bit timer/counter
Dual USART
JTAG
2.4 Location of Connectors
J2
RTL8019AS
Ethernet
Controller
RS-485
Line Driver
Port Selection
Logic
RS-232
Line Driver
10BASE-T
Ethernet
RS-485/RS-422
Port
Ser0/Ser1
RS-232
Port Ser0
RS-232
Port Ser1
9
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