Motorola IH5 User Manual
Block Diagram
http://www.motorola.com/computer/literature
6-19
6
Figure 6-3. MX Signal Timings
Signal Descriptions
Serial Ports Defined:
CTSn - clear to send
DCDn - data carrier detected
DSRn - data set ready
DTRn - data terminal ready
RIn - ring indicator
RTSn - request to send
ABORT (ABT)/RESET (RST) Switch (S1)
The MCPN750A SBC contains a single push button switch that provides
both ABORT and RESET functions. When the switch is depressed for less
than 3 seconds, an interrupt is generated to the processor via ISA interrupts
IRQ8. If the switch is held for more than 3 seconds, a board hard reset is
generated.
both ABORT and RESET functions. When the switch is depressed for less
than 3 seconds, an interrupt is generated to the processor via ISA interrupts
IRQ8. If the switch is held for more than 3 seconds, a board hard reset is
generated.
RTS3
DTR3
RTS1
RTS2
Reserved
CTS3
DSR3
DCD3
CTS1
DCD2
MMXCLK
MMXSYNC#
MMXDO
MMXDI
Time Slot 15
Time Slot 0
Time Slot 1
Time Slot 2
Time Slot 3