Rabbit OP7100 User Manual download pdf (Page 110)

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 Serial Interface Board 2 OP7100

Introduction

The SIB is an interface adapter used to program the OP7100. The SIB is

contained in an ABS plastic enclosure, making it rugged and reliable. The

SIB enables the OP7100 to communicate with Dynamic C via the Z180’s

clocked serial I/O (CSI/O) port, freeing the OP7100’s serial ports for use

by the application during programming and debugging.

The SIB’s 8-pin cable plugs into the target OP7100’s processor via header

J4 on the OP7100, which is accessed by removing the back cover from the

OP7100, and a 6-conductor RJ-12 phone cable connects the SIB to the

host PC. The SIB automatically selects its baud rate to match the commu-

nication rates established by the host PC (9600, 19,200, or 57,600 bps).

However, the SIB determines the host’s communication baud rate only on

the first communication after reset. To change baud rates, change the COM

baud rate, reset the target OP7100 (which also resets the SIB), then select

Reset Target from Dynamic C.

Chapter 2 provides detailed information on connecting the SIB

to the OP7100.

The SIB receives power and resets from the target OP7100 via the 8-pin

connector J1. Therefore, do not unplug the SIB from the target OP7100

while power is applied. To do so could damage both the OP7100 and the

SIB; additionally, the target may reset.

The SIB consumes approximately 60 mA from the +5 V supply. The target-

system current consumption therefore increases by this amount while the

SIB is connected to the OP7100.

When the OP7100 is powered up or reset with the SIB attached, it is

automatically in the program mode. To operate the OP7100 in the run

mode, remove power, disconnect the SIB, and re-apply power to the

OP7100.

Never connect or disconnect the SIB with power applied to

the OP7100.

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Rabbit OP7100 User Manual Page 110