Block Diagram
http://www.motorola.com/computer/literature
6-17
6
Figure 6-2. Serial Port Signal Multiplexing
I/O Signal Multiplexing (IOMX)
There are four pins that are used for the IOMX function: MXCLK,
MXSYNC#, MXDO, and MXDI. MXCLK is the 10 MHz bit clock for the
time-multiplexed data lines MXDO and MXDI. MXSYNC# is asserted for
one bit time at Time Slot 15 by the MCPN750A board. MXSYNC# is used
by the transition module to synchronize with the MCPN750A board.
MXDO is the time-multiplexed output line from the main board and
MXDI is the time-multiplexed line from the transition module. A 16-to-1
multiplexing scheme is used with 10 MHz bit rate. Sixteen Time Slots are
defined and allocated as follows:
Serial
1
2
4
Serial
2
2
4
Serial
3
2
4
Serial
4
2
4
MXDO
MXSYNC#
MXCLK
MXDI
J3
Connector
IOMX
Function
Summary of Contents for MCPN750A
Page 13: ...xii ...
Page 15: ...xiv ...
Page 53: ...1 32 Computer Group Literature Center Web Site Hardware Preparation and Installation 1 ...
Page 67: ...2 14 Computer Group Literature Center Web Site Startup and Operation 2 ...
Page 105: ...5 14 Computer Group Literature Center Web Site Remote Start Via the PCI Bus 5 ...
Page 167: ...7 38 Computer Group Literature Center Web Site Connector Pin Assignments 7 ...
Page 171: ...A 4 Computer Group Literature Center Web Site Specifications A ...
Page 187: ...Index IN 10 Computer Group Literature Center Web Site I N D E X ...