Specifications
FUNCTIONAL DESCRIPTION
3-8 MPC505EVBUM/D
The coprocessor interface is a transparent, logical extension of the MC68332 MCU device
registers and instructions. To the external environment the CPU and coprocessor execution
model appear to be on the same chip.
A coprocessor interface is an execution model based on sequential instruction execution by the
CPU and coprocessor. For optimum performance, the coprocessor interface lets floating point
instructions execute concurrently with CPU integer instructions. Concurrent instruction
execution is further extended by the coprocessor, which executes multiple floating-point
instructions simultaneously.
3.6.2 Logic Analyzer Connectors
To debug hardware and software developed for the MC68331 MCU device, connect a logic
analyzer to the desired pins of PFB connectors P1 - P6.
SUPPORT INFORMATION
MPC505EVBUM/D 4-1
CHAPTER 4
SUPPORT INFORMATION
4.1 INTRODUCTION
The tables in this chapter describe EVB connector signals.
4.2 CONNECTOR SIGNAL DESCRIPTIONS
The following are all the connectors on the board include pin number mnemonic and signal
description.
Connector P7 connects external power to the EVB. the host computer connects to the EVB via
P4. POD1 through POD7 let you connect a logic analyzer to the EVB. P2 and P3 are EVB I/O
ports for evaluating RS-232C devices.
NOTE
The signal descriptions in the following tables are for quick
reference only. For a complete description of the MCU signals
consult the appropriate MCU user’s manual, data book, or technical
summary. For a complete description of the SCSI signals consult
the appropriate NCR 53C90B User Manual Data Book. For a
complete description of the P2,P3 signals consult the appropriate
MOTOROLA M68681 User Manual Data Book.
Tables 4-1 through 4-19 list pin assignments for these connectors:
Table 4-1 SCSI connector P1 (not populated) Table 4-9 Logic analyzer connector POD1
Table 4-2 RS-232C I/O port P2 Table 4-10 Logic analyzer connector POD2
Table 4-3 RS-232C I/O port P3 Table 4-11 Logic analyzer connector POD3
Table 4-4 Host computer connector P4 Table 4-12 Logic analyzer connector POD4
Table 4-5 Debug mode connector P5 Table 4-13 Logic analyzer connector POD5
Table 4-6 Expansion connector P6 Table 4-14 Logic analyzer connector POD6
Table 4-7 Input power connector P7 Table 4-15 Logic analyzer connector POD7
Table 4-8 Expansion connector P8
Fr
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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