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PCI1031 Datasheet(PDF) 11 Page - Texas Instruments |
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PCI1031 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 100 page PCI1031 PCI-TO-PC CARD16 CONTROLLER UNIT SCPS008B – FEBRUARY 1996 – REVISED DECEMBER 1997 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions (Continued) 16-bit PC Card interface control signals (slots A and B) TERMINAL NUMBER I/O FUNCTION NAME SLOT A† SLOT B‡ TYPE FUNCTION BVD1 (STSCHG/RI) 138 72 I Battery voltage detect 1. Generated by 16-bit memory PC Cards that include batteries. BVD1 is used with BVD2 as an indication of the condition of the batteries on a memory PC Card. Both BVD1 and BVD2 are kept high when the battery is good. When BVD2 is low and BVD1 is high, the battery is weak and needs to be replaced. When BVD1 is low, the battery is no longer serviceable and the data in the memory PC Card is lost. See ExCA card status-change interrupt configuration register for enable bits. See ExCA card status-change register and ExCA interface status register for the status bits for this signal. Status change. STSCHG is used to alert the system to a change in the READY, write protect, or battery voltage dead condition of a 16-bit I/O PC Card. Ring indicate. RI is used by 16-bit modem cards to indicate ring detection. BVD2(SPKR) 137 71 I Battery voltage detect 2. Generated by 16-bit memory PC Cards that include batteries. BVD2 is used with BVD1 as an indication of the condition of the batteries on a memory PC Card. Both BVD1 and BVD2 are high when the battery is good. When BVD2 is low and BVD1 is high, the battery is weak and needs to be replaced. When BVD1 is low, the battery is no longer serviceable and the data in the memory PC Card is lost. See ExCA card status-change interrupt configuration register for enable bits. See ExCA card status-change register and ExCA interface status register for the status bits for this signal. Speaker. SPKR is an optional binary audio signal available only when the card and socket have been configured for the 16-bit I / O interface. The audio signals from cards A and B can be combined by the PCI1031 and output on SPKROUT. DMA request. BVD2 can be used as the DMA request signal during DMA operations to a 16-bit PC Card that supports DMA. If used, the PC Card asserts BVD2 to request a DMA operation. CD1 CD2 82 140 16 74 I PC Card detect 1 and PC Card detect 2. CD1 and CD2 are internally connected to ground on the PC Card. When a PC Card is inserted into a socket, CD1 and CD2 are pulled low. For signal status, see ExCA interface status register. CE1 CE2 94 97 28 30 O Card enable 1 and card enable 2. CE1 and CE2 enable even- and odd-numbered address bytes. CE1 enables even-numbered address bytes, and CE2 enables odd-numbered address bytes. INPACK 127 61 I Input acknowledge. INPACK is asserted by the PC Card when it can respond to an I/O read cycle at the current address. DMA request. INPACK can be used as the DMA request signal during DMA operations to a 16-bit PC Card that supports DMA. If used, the PC Card asserts INPACK to indicate a request for a DMA operation. IORD 99 33 O I/O read. IORD is asserted by the PCI1031 to enable 16-bit I/O PC Card data output during host I/O read cycles. DMA write. IORD is used as the DMA write strobe during DMA operations from a 16-bit PC Card that supports DMA. The PCI1031 asserts IORD during DMA transfers from the PC Card to host memory. IOWR 101 35 O I/O write. IOWR is driven low by the PCI1031 to strobe write data into 16-bit I/O PC Cards during host I/O write cycles. DMA read. IOWR is used as the DMA read strobe during DMA operations to a 16-bit PC Card that supports DMA. The PCI1031 asserts IOWR during DMA transfers from host memory to the PC Card. OE 98 32 O Output enable. OE is driven low by the PCI1031 to enable 16-bit memory PC Card data output during host memory read cycles. DMA terminal count. OE is used as terminal count (TC) during DMA operations to a 16-bit PC Card that supports DMA. The PCI1031 asserts OE to indicate TC for a DMA write operation. † Terminal name is preceded with A_. For example, the full name for terminal 138 is A_BVD1. ‡ Terminal name is preceded with B_. For example, the full name for terminal 72 is B_BVD1. |
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