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PCI7621 Datasheet(PDF) 54 Page - Texas Instruments |
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PCI7621 Datasheet(HTML) 54 Page - Texas Instruments |
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54 / 298 page  2−28 Table 2−18. Smart Media/XD Terminals If any Smart Media/XD terminal is unused, then the terminal may be left floating. TERMINAL DESCRIPTION I/O INPUT OUTPUT PU/ POWER EXTERNAL NAME NO. DESCRIPTION I/O TYPE INPUT OUTPUT PU/ PD POWER RAIL EXTERNAL PARTS MC_PWR_CTRL_0 MC_PWR_CTRL_1 F01 F02 Media card power control for flash media sockets. O LVCO1 Power switch or FET to turn power on to FM socket SM_ALE J03 SmartMedia address latch enable. This signal functions as specified in the SmartMedia specification, and is used to latch addresses passed over SM_D7−SM_D0. O TTLO2 SW2 VCC SM_CD F06 SmartMedia card detect. This input is asserted when SmartMedia cards are inserted. I LVCI1 PU2 VCC SM_CE H07 SmartMedia card enable. This signal functions as specified in the SmartMedia specification, and is used to enable the media for a pending transaction. O TTLO2 SW2 VCC SM_CLE J07 SmartMedia command latch enable. This signal functions as specified in the SmartMedia specification, and is used to latch commands passed over SM_D7−SM_D0. O TTLO2 SW2 VCC SM_D7 SM_D6 SM_D5 SM_D4 SM_D3 SM_D2 SM_D1 SM_D0 J02 J01 J06 H03 H05 G03 G02 G01 SmartMedia data terminals. These signals pass data to and from the SmartMedia, and functions as specified in the SmartMedia specifications. I/O TTLI2 TTLO2 SW2 VCC SM_EL_WP G05 SmartMedia electrical write protect. O TTLO2 SW2 VCC SM_PHYS_WP K02 SmartMedia physical write protect. This input comes from the write protect tab of the SmartMedia card. I PCII5 PCIO5 SW3 SM_RE J05 SmartMedia read enable. This signal functions as specified in the SmartMedia specification, and is used to latch a read transfer from the card. O TTLO2 SW2 VCC SM_R/B K01 SmartMedia read/busy. This signal functions as specified in the SmartMedia specification, and is used to pace data transfers to the card. I PCII5 PCIO5 SW3 VCC SM_WE F03 SmartMedia write enable. This signal functions as specified in the SmartMedia specification, and is used to latch a write transfer to the card. O TTLO2 SW2 VCC |
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