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User’s Manual
21
Table 1. RCM2200 Pinout Configurations
Pin
Pin Name
Default Use
Alternate Use
Notes
Header J
4
1
GND
2
VCC
3
PC0
Output
TXD
4
PC1
Input
RXD
5
PC2
Output
TXC
6
PC3
Input
RXC
7
TPOUT–
Ethernet transmit port
8
TPOUT+
9
LNK
Ethernet link (LNK)
LED indicator
10
PD3
Bitwise or parallel
programmable I/O
11
PD4
ATXB output
12
PD5
ARXB input
13
/IORD
Input (I/O read
strobe)
14
/IOWR
Output (I/O write
strobe)
15
PE0
Bitwise or parallel
programmable I/O
I0 control or INT0A
input
16
PE1
I1 control or INT1A
input
17
TPIN–
Ethernet receive port
18
TPIN+
19
PE4
Bitwise or parallel
programmable I/O
I4 control or INT0B
input
20
PE5
I5 control or INT1B
input
21
ACT
Ethernet active (ACT)
LED indicator
22
PE7
Bitwise or parallel
programmable I/O
I7 control or slave port
chip select /SCS
23–26
A[3:0]
Rabbit 2000 address bus
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