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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) 41 Page - Texas Instruments |
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PCI1221 датащи(HTML) 41 Page - Texas Instruments |
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41 / 123 page  PCI1221 GHK/PDV PC CARD CONTROLLERS SCPS042 – JULY 1998 41 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 suspend mode (continued) PRST GNT SUSPEND PCLK PRSTIN SUSPENDIN PCLKIN External Terminals Internal Signals Figure 18. Signal Diagram of Suspend Function ring indicate The RI_OUT output is an important feature in power management, allowing a system to go into a suspended mode and wake up on modem rings and other card events. TI designed flexibility permits this signal to fit wide platform requirements. RI_OUT on the PCI1221 can be asserted under any of the following conditions: D A 16-bit PC Card modem in a powered socket asserts RI to indicate to the system the presence of an incoming call. D A powered down CardBus card asserts CSTSCHG (CBWAKE) requesting system and interface wake up. D A CSC event occurs, such as insertion/removal of cards, battery voltage levels. CSTSCHG from a powered CardBus card is indicated as a CSC event, not as a CBWAKE event. These two RI_OUT events are enabled separately. Figure 15 shows various enable bits for the PCI1221 RI_OUT function; however, it does not show the masking of CSC events. See Table 10 for a detailed description of CSC interrupt masks and flags. |
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