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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCI1221 датащи(PDF) 35 Page - Texas Instruments |
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PCI1221 датащи(HTML) 35 Page - Texas Instruments |
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35 / 123 page  PCI1221 GHK/PDV PC CARD CONTROLLERS SCPS042 – JULY 1998 35 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PC Card functional and CSC interrupts (continued) Table 10. Interrupt Mask and Flag Registers CARD TYPE EVENT MASK FLAG 16-bit Battery conditions (BVD1, BVD2) ExCA offset 05h/45h/805h bits 1 and 0 ExCA offset 04h/44h/804h bits 1 and 0 memory Wait states (READY) ExCA offset 05h/45h/805h bit 2 ExCA offset 04h/44h/804h bit 2 16 bit I/O Change in card status (STSCHG) ExCA offset 05h/45h/805h bit 0 ExCA offset 04h/44h/804h bit 0 16-bit I/O Interrupt request (IREQ) Always enabled PCI configuration offset 91h bit 0 All 16-bit PC Cards Power cycle complete ExCA offset 05h/45h/805h bit 3 ExCA offset 04h/44h/804h bit 3 Change in card status (CSTSCHG) Socket mask bit 0 Socket event bit 0 CardBus Interrupt request (CINT) Always enabled PCI configuration offset 91h bit 0 CardBus Power cycle complete Socket mask bit 3 Socket event bit 3 Card insertion or removal Socket mask bits 2 and 1 Socket event bits 2 and 1 Functional interrupt events are valid only for 16-bit I/O and CardBus cards; that is, the functional interrupts are not valid for 16-bit memory cards. Furthermore, card insertion and removal-type CSC interrupts are independent of the card type. Table 11. PC Card Interrupt Events and Description CARD TYPE EVENT TYPE SIGNAL DESCRIPTION Battery conditions CSC BVD1(STSCHG)//CSTSCHG A transition on BVD1 indicates a change in the PC Card battery conditions. 16-bit memory y (BVD1, BVD2) CSC BVD2(SPKR)//CAUDIO A transition on BVD2 indicates a change in the PC Card battery conditions. memory Wait states (READY) CSC READY(IREQ)//CINT A transition on READY indicates a change in the ability of the memory PC Card to accept or provide data. 16-bit I/O Change in card status (STSCHG) CSC BVD1(STSCHG)//CSTSCHG The assertion of STSCHG indicates a status change on the PC Card. Interrupt request (IREQ) Functional READY(IREQ)//CINT The assertion of IREQ indicates an interrupt request from the PC Card. CardBus Change in card status (CSTSCHG) CSC BVD1(STSCHG)//CSTSCHG The assertion of CSTSCHG indicates a status change on the PC Card. Interrupt request (CINT) Functional READY(IREQ)//CINT The assertion of CINT indicates an interrupt request from the PC Card. All PC Cards Card insertion or removal CSC CD1//CCD1, CD2//CCD2 A transition on either CD1//CCD1 or CD2//CCD2 indicates an insertion or removal of a 16-bit or CardBus PC Card. Power cycle complete CSC N/A An interrupt is generated when a PC Card power-up cycle has completed. |
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