Motorola MVME2700 Series Installation And Use Manual page 24

Serial port configurations for the MVME712M are illustrated in figures
2-4 through 2-9.
Serial port configurations for the MVME761 are illustrated in figures
through 2-28.
Serial Port 4 Transmit Clock Configuration (J17)
In synchronous serial communications, you can configure serial port 4 on
the MVME2700 to use the clock signals provided by the TxC signal line.
Header J17 configures port 4 to either drive or receive TxC (default). The
factory configuration has port 4 set to receive TxC.
A complete configuration of serial port 4 requires that you set additional
jumper headers on the MVME2700 or the transition module.
Serial port configurations for the MVME712M are illustrated in figures
2-4 through 2-9.
Serial port configurations for the MVME761 are illustrated in figures
through 2-28.
Serial Port 4 Transmit Clock Receiver Buffer Control (J19)
A transmit clock receiver buffer (controlled by header J19) is associated
with serial port 4. Installing a jumper on J19 enables the buffer. Removing
the jumper disables the buffer. The factory configuration has the serial port
4 buffer enabled.
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J17
3
2
1
D rive TxC
MVME2700 Base Board Preparation
J17
3
2
1
Receive TxC
(factory configuration)
2
2-11
2-11
2-5