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MC68360 USER’S MANUAL
Step 4: Write the MBAR.........................................................................9-14
Step 5: Verify a Dual-Port RAM Location...............................................9-14
Step 6: Is This a Power-Up Reset?........................................................9-14
Step 7: Deal with the Clock Synthesizer ................................................9-14
Step 8: Initialize System Protection .......................................................9-15
Step 9: Clear Entire Dual-Port RAM ......................................................9-15
Step 10: Write the PEPAR .....................................................................9-15
Step 11: Remap Chip Select 0...............................................................9-15
Step 12: Initialize the System RAM........................................................9-15
Step 13: Copy the EVT to System RAM ................................................9-16
Step 14: Initialize All Other Memory and Peripherals ............................9-16
Step 15: Initialize the Rest of the SIM60................................................9-16
Step 16: Generate a SIM60 Interrupt.....................................................9-16
Step 17: Test the CPM...........................................................................9-17
Step 18: Generate Interrupts with the CPM ...........................................9-17
Step 19: Enable External Interrupts .......................................................9-17
Step 20: Enable External Bus Masters ..................................................9-18
Step 21: Off to the Races.......................................................................9-18
9.3
Porting MC68302 IMP Code to the MC68360 QUICC...........................9-18
9.3.1
CPU and Compilers ...............................................................................9-18
9.3.2
Differences/Similarities ..........................................................................9-18
9.3.3
Notes About Porting...............................................................................9-19
9.3.4
How To Port MC68302 Functions..........................................................9-19
9.3.4.1
System Configuration Registers. ...........................................................9-19
9.3.4.1.1
Base Address Register (BAR). ..............................................................9-19
9.3.4.1.2
System Control Register (SCR). ............................................................9-20
9.3.4.2
System RAM. .........................................................................................9-21
9.3.4.2.1
Buffer Descriptors. .................................................................................9-21
9.3.4.2.2
Protocol-Independent Parameter RAM Values......................................9-21
9.3.4.2.3
Protocol-Dependent Parameter RAM Values. .......................................9-22
9.3.4.3
Internal Registers (System Integration Block)........................................9-23
9.3.4.4
Internal Registers (Communication Processor). ....................................9-26
9.4
Using the QUICC MC68040 Companion Mode .....................................9-31
9.4.1
MC68EC040 to QUICC Interface...........................................................9-32
9.4.1.1
MC68EC040 Reads And Writes to QUICC............................................9-32
9.4.1.2
Clocking Strategy...................................................................................9-34
9.4.1.3
Reset Strategy. ......................................................................................9-34
9.4.1.4
Interrupts................................................................................................9-34
9.4.2
Memory Interfaces .................................................................................9-37
9.4.2.1
QUICC Memory Interface Pins. .............................................................9-37
9.4.2.2
Regular EPROM. ...................................................................................9-38
9.4.2.3
Burst EPROM. .......................................................................................9-38
9.4.2.4
Flash EPROM. .......................................................................................9-41
9.4.2.5
Regular SRAM. ......................................................................................9-41
9.4.2.6
Burst SRAM. ..........................................................................................9-41
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Freescale Semiconductor, Inc.
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