Remove power from the target controller and unplug the cloning cable from its programming port. The
master controller is now available to program the next target.
Technical Description
Figure 3 shows the Rabbit Cloning Board circuit and Figure 4 shows the programming port on a Rabbit
based product. The Rabbit Cloning Board works with both Rabbit 2000-based and 3000-based systems.
Figure 3. Rabbit Cloning Board Circuit
J1/J3
J2/J4
MASTER
RXA
GND
CLKA
+5 V
/RESET
TXA
N/C
STATUS
SMODE0
SMODE1
1
2
3
4
5
RESET MASTER
7
8
9
10
CLONE STATUS
470 W
1
2
3
4
5
6
7
8
9
10
RXA
GND
CLKA
+5 V
/RESET
TXA
N/C
STATUS
SMODE0
SMODE1
TARGET
BEING
CLONED
Figure 4. Rabbit Programming Port
VDD
RXA
VSS
CLKA
VDD
Rabbit Chip
/RESET
TXA
STATUS
SMODE0
SMODE1
The master controller detects a connected Cloning Board when the signal CLKA is held low. This is
detected in the BIOS when the reset ends and the cloning support of the BIOS is invoked. The cloning pro-
gram cold-boots the target system by resetting it and downloading a primary boot program.
4
TN207
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