Motorola MVME172 - Manual (Page 7)

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Contents
CHAPTER 1 Board Description and Memory Maps
Introduction ................................................................................................................1-1
Overview ....................................................................................................................1-1
Requirements .............................................................................................................1-4
Block Diagrams .........................................................................................................1-5
Functional Description ...............................................................................................1-5
No-VMEbus-Interface Option ............................................................................1-5
VMEbus Interface and VMEchip2 .....................................................................1-9
Memory Maps ............................................................................................................1-9
Local Bus Memory Map .....................................................................................1-9
Normal Address Range................................................................................1-9
Detailed I/O Memory Maps.......................................................................1-21
BBRAM/TOD Clock Memory Map..........................................................1-40
Interrupt Acknowledge Map......................................................................1-46
VMEbus Memory Map .....................................................................................1-46
VMEbus Accesses to the Local Bus..........................................................1-47
VMEbus Short I/O Memory Map..............................................................1-47
Software Support Considerations ............................................................................1-47
Interrupts ...........................................................................................................1-47
Cache Coherency ..............................................................................................1-48
Sources of Local BERR*..................................................................................1-48
Local Bus Time-out ...................................................................................1-48
VMEbus Access Time-out.........................................................................1-49
VMEbus BERR* .......................................................................................1-49
Local DRAM Parity Error .........................................................................1-49
VMEchip2 .................................................................................................1-49
Bus Error Processing .................................................................................1-49
Description of Error Conditions on the MVME172 .........................................1-50
MPU Parity Error.......................................................................................1-50
MPU Off-board Error ................................................................................1-51
MPU TEA - Cause Unidentified ...............................................................1-51
MPU Local Bus Time-out .........................................................................1-51
DMAC VMEbus Error ..............................................................................1-52
DMAC Parity Error ...................................................................................1-52
DMAC Off-board Error.............................................................................1-53
DMAC LTO Error .....................................................................................1-53