Moxa Technologies NE-4100 - Manual (Page 18)

NE-4100 Series User’s Manual Panel Layout and Pin Assignments
2-11
Block Diagrams
NE-4120S Block Diagram
Pin header
1 MB SDRAM 2 MB Flash
10/100 M
Ethernet PHY
+5 VDC
MAC
80186 CPU
Transformer
1.5 KV isolation
UART0
Tx Rx
Customer's device
Ready
LED
RS-232 interface
Tx+ Tx- Rx- Rx+
Serial console
interface
Line
Driver
Line
Driver
UART1
GPIO Port
PIO0 - PIO3
10M
LED 100M
LED
Serial data
(Tx, Rx, RTS, CTS,
DTR, DSR, DCD)
NE-4120A Block Diagram
1 MB SDRAM 2 MB Flash
10/100 M
Ethernet PHY
+5 VDC
MAC
80186 CPU
Transformer
1.5 KV isolation
UART0
Tx Rx
Customer's device
Ready
LED
RS-422/485
interface
Tx+ Tx- Rx- Rx+
Serial console
interface
Line
Driver
Line
Driver
UART1
GPIO Port
PIO0 - PIO3
10M
LED 100M
LED
RS-422/485
Signal
Pin header