SST 5136-DNP-PCI, Справочник по аппаратуре, Страница: 10 / 25

5136-DNP-PCI Hardware Reference
© 1999 SST/Woodhead Canada Limited 6
4. Hardware Technical Information
4.1 Introduction
This section provides technical hardware information. The information in this section is intended for programmers
familiar with hardware-level PC programming.
4.2 DeviceNet Pro Mode Register Interface
Offset Register 7 6 5 4 3 2 1 0
0 CCM Reserved MemEn IrqPending CardInt
1 SP1 Reserved
2 CCR CardRun WDT FlashEn Mode Reserved MCRSel
3 MCR0 Reserved Bank
3 MCR1 AddrMode Win32K Reserved
3 MCR2 Reserved
3 MCR3 A19 Reserved
4 ICR Reserved IrqMode Reserved
5 SP2 Reserved
6 SP3 Reserved
7 AIDR IdMode Lock Reserved SEL Di Do CLK
7 SIDR IdMode CardId
4.2.1 Card Command Register - CCM - Base A 0
Bit 7 6 5 4 3 2 1 0
Read/Write R R R R R/W R/W R/W R/W
Reset 0 0 0 0
Name Reserved MemEn IrqPending CardInt
Bit Name Description
Card Int
(CINT)
This bit is used to send interrupts to the card processor.
•
Writing 1 generates an interrupt to the card
•
Writing 0 has no effect
•
Reading 1 indicates interrupt in progress.
•
Reading 0 indicates interrupt complete.
IrqPending This bit indicates that an interrupt from the card is still pending.
•
Writing 1 acknowledges the interrupt (and clears this condition)
•
Writing 0 has no effect
•
Reading 1 indicates interrupt in progress.
•
Reading 0 indicates interrupt complete.
MemEn These bits indicate and control whether or not the card’s shared memory will
respond to host memory accesses. This may be used to multiplex several
5136-DNP-PCI cards at the same base address by enabling the memory on one
card at a time.
•
Writing 01 Disables card memory
•
Writing 10 Enables card memory
•
Writing 11 or 00 has no effect
•
Reading 11 indicates that this card’s memory is currently enabled.
•
Reading 00 indicates that this card’s memory is currently disabled.
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