4-8
Computer Group Literature Center Web Site
Programming the MVME240x
4
DMA Channels
The PIB supports seven DMA channels. They are not functional on the
MVME240x.
Sources of Reset
The MVME240x has nine potential sources of reset:
1. Power-on reset
2.
RST
switch (resets the VMEbus when the MVME240x is system
controller)
3. Watchdog timer Reset function controlled by the SGS-Thomson
MK48T559 timekeeper device (resets the VMEbus when the
MVME240x is system controller)
4.
ALT_RST
∗
function controlled by the Port 92 register in the PIB
(resets the VMEbus when the MVME240x is system controller)
5. PCI/ISA I/O Reset function controlled by the Clock Divisor register
in the PIB
6. The VMEbus
SYSRESET
∗
signal
Hawk MPIC
PMC Slot 1
INTA# INTB# INTC# INTD#
PMC Slot 2
INTA# INTB# INTC# INTD#
PCIX Slot
INTA# INTB# INTC# INTD#
IRQ9 IRQ10 IRQ11 IRQ12
Содержание MVME2401-1
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Страница 78: ...3 30 Computer Group Literature Center Web Site Functional Description 3 ...
Страница 90: ...4 12 Computer Group Literature Center Web Site Programming the MVME240x 4 ...
Страница 126: ...Related Specifications A 8 Computer Group Literature Center Web Site A ...
Страница 168: ...Glossary GL 14 Computer Group Literature Center Web Site G L O S S A R Y ...
Страница 176: ...Index IN 8 Computer Group Literature Center Web Site I N D E X ...
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