Z-World EG2110, User Manual

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28 RabbitLink (EG2110)
C.1.1 Pinouts
Figure C.1.1-1 shows the pinouts for the RJ-45 Ethernet jack and the two programming headers on
the RabbitLink board.
Figure C.1.1-1 Pinouts for Ethernet Jack and Programming Headers
C.2 Serial Communication
The RabbitLink uses 2 serial ports of the Rabbit 2000 microprocessor.
C.2.1 Serial Programming Ports
The RabbitLink board has two 10-pin programming headers labeled J8 and J9. The PROG IN (J8)
header uses the Rabbit 2000’s serial port A for communication, and
PROG OUT (J9)
uses serial
port B. The Rabbit 2000 startup-mode pins (SMODE0, SMODE1) are presented to PROG IN so
that an externally connected device can force a start-up in an external bootstrap mode when the
PROG connector on the programming cable is used.
NOTE: Refer to the Rabbit 2000 Microprocessor User’s Manual for more infor-
mation on the bootstrap mode.
The PROG IN header is used with the DIAG connector on the programming cable to configure net-
work addresses for the RabbitLink. This connection transmits information to and from a PC run-
ning a terminal emulation program. The
PROG IN
header is also used with the
PROG
connector on
the programming cable. With this connection, you can download firmware to the RabbitLink and
also reset default network addresses.
The PROG OUT header is connected with the program download cable to the programming port of
the Rabbit-based target. This connection allows the RabbitLink to transmit information to and
from the Rabbit-based target. A network-enabled PC running Dynamic C or the RFU communi-
cates with the RabbitLink using the RabbitLink’s Ethernet connection. These 2 connections give
you the power to remotely download and/or debug an application on a Rabbit-based target.
J8
RXA
CLKA
/RESET
N.C.
SMODE0
1
3
5
7
9
2
4
6
8
10
GND
VCC
TXA
STATUS
SMODE1
PROG IN
J2
RJ-45 ETHERNET JACK
1. E_Tx+
2. E_Tx–
3. E_Rx+
6. E_Rx–
1
8
J9
TXB
CLKB
PA0
N.C.
PB6
1
3
5
7
9
2
4
6
8
10
GND
NC
RXB
PB2
PB7
PROG OUT