Motorola IH5 User Manual

7-6

Computer Group Literature Center Web Site

Connector Pin Assignments

Serial COM Ports 1-4:

COMnTD - COM Port n Transmit Data Output
COMnRD - COM Port n Receive Data Input

Miscellaneous:

TMCOM1_L - Used to select COM1 active on processor board or on 
Transition Module

MXCLK - multiplexed I/O signal clock, 10 MHz

MXSYNC_L - multiplexed I/O sync signal

MXDI - multiplexed I/O data in signal from transition module

MXDO - multiplexed I/O data out signal to transition module

I2CSCL - I

2

C Serial Clock for Transition Module SROM

I2CSDA - I

2

C Serial Data for Transition Module SROM

USBV0_OK - USB Port 0 Voltage Monitor

USBV1_OK - USB Port 1 Voltage Monitor

Connector J4 is installed on both the processor board and the transition 
module for mechanical alignment purposes only. The keying tabs in the 
Type A connector assist with alignment of pins in the backplane connector 
during insertion of the boards. No signals are connected to the J4 pins 
except the ground pins 1 through 11 in Row F of the outer shield, which 
are connected to the board logic ground.