Z-World Wolf BL2600, User Manual

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22 Wolf (BL2600)
For best performance, the bias and termination resistors in a multidrop network should
only be enabled on both end nodes of the network. Disable the termination and bias resis-
tors on any intervening BL2600 units in the network by removing both jumpers from
header JP6.
TIP: Save the jumpers for possible future use by “parking” them across pins 1–3 and 4–6
of header JP7. Pins 3 and 4 are not otherwise connected to the BL2600.
3.3.3 Programming Port
The RabbitCore module on the BL2600 has a 10-pin programming header. The program-
ming port uses the Rabbit 3000’s Serial Port A for communication, and is used for the fol-
lowing operations.
•
Programming/debugging
•
Cloning
The programming port is used to start the BL2600 in a mode where the BL2600 will
download a program from the port and then execute the program. The programming port
transmits information to and from a PC while a program is being debugged.
The Rabbit 3000 startup-mode pins (SMODE0, SMODE1) are presented to the program-
ming port so that an externally connected device can force the BL2600 to start up in an
external bootstrap mode. The BL2600 can be reset from the programming port via the
/EXT_RSTIN line.
The Rabbit 3000 status pin is also presented to the programming port. The status pin is an
output that can be used to send a general digital signal.
NOTE: Refer to the Rabbit 3000 Microprocessor User’s Manual for more information
related to the bootstrap mode.