Motorola MVME1X7P User Manual

Page 8

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Functional Description ............................................................................................ 1-17

VMEbus Interface and VMEchip2................................................................... 1-18

VMEchip2 General-Purpose I/O............................................................... 1-18
Petra/VMEchip2 Redundant Logic ........................................................... 1-18

Memory Maps.......................................................................................................... 1-20

Local Bus Memory Map................................................................................... 1-20

Normal Address Range ............................................................................. 1-20
Detailed I/O Memory Maps ...................................................................... 1-25
BBRAM/TOD Clock Memory Map ......................................................... 1-41
Interrupt Acknowledge Map ..................................................................... 1-46

VMEbus Memory Map .................................................................................... 1-46

VMEbus Accesses to the Local Bus ......................................................... 1-46
VMEbus Short I/O Memory Map ............................................................. 1-46

Interrupt Handling ................................................................................................... 1-47

Example: VMEchip2 Tick Timer 1 Periodic Interrupt..................................... 1-47

Cache Coherency (MVME167P)............................................................................. 1-49
Cache Coherency (MVME177P)............................................................................. 1-50
Using Bus Timers .................................................................................................... 1-51
Indivisible Cycles .................................................................................................... 1-52
Supervisor Stack Pointer (MC68060)...................................................................... 1-53
Sources of Local Bus Errors .................................................................................... 1-54

Local Bus Timeout ........................................................................................... 1-54
VMEbus Access Timeout ................................................................................. 1-54
VMEbus BERR* .............................................................................................. 1-54
VMEchip2 ........................................................................................................ 1-55
Bus Error Processing ........................................................................................ 1-55

Error Conditions ...................................................................................................... 1-55

MPU Parity Error ............................................................................................. 1-56
MPU Offboard Error ........................................................................................ 1-56
MPU TEA - Cause Unidentified ...................................................................... 1-56
MPU Local Bus Time-out ................................................................................ 1-57
DMAC VMEbus Error ..................................................................................... 1-57
DMAC Parity Error .......................................................................................... 1-57
DMAC Offboard Error ..................................................................................... 1-58
DMAC LTO Error ............................................................................................ 1-58
DMAC TEA - Cause Unidentified ................................................................... 1-59
SCC Retry Error ............................................................................................... 1-59
SCC Parity Error .............................................................................................. 1-60
SCC Offboard Error ......................................................................................... 1-60
SCC LTO Error................................................................................................. 1-61
LAN Parity Error.............................................................................................. 1-61

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