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SN74AVCA406 Datasheet(PDF) 7 Page - Texas Instruments |
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SN74AVCA406 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 51 page SN74AVCA406 MMC, SD CARD, Memory StickE, SmartMedia, AND xDPicture CardE +15kV ESDPROTECTED VOLTAGETRANSLATION TRANSCEIVER SCES615B – OCTOBER 2004 – REVISED DECEMBER 2004 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Table 3. SD Card or MMC PIN NO. PIN NAME SIGNAL NAME OR (CONNECTION) PIN FUNCTION PIN TYPE A1 VCCA VCCA A-port supply voltage. VCCA powers all A-port I/Os and control inputs. Power B1 10A1 CLK.h Clock signal from host Input C1 9A CMD.h Command signal connected to host I/O D1 9DIR CMD-dir.h Direction control for 9A/9B Input E1 78DIR (tie-high) Direction control for 7A/7B and 8A/8B. Not used in this mode. Tie to VCCA. Input F1 7A (tie-low) I/O pin not used in this mode. Tie to GND. I/O G1 VCCA VCCA A-port supply voltage. VCCA powers all A-port I/Os and control inputs. Power A2 2A (tie-low) I/O pin not used in this mode. Tie to GND. I/O B2 3A (tie-low) I/O pin not used in this mode. Tie to GND. I/O C2 10A2 CLK-f.h Clock feedback to host for resynchronizing data. Used in OMAP processors. Optional on other processors. Leave unconnected if not used. Output D2 4A (tie-low) I/O pin not used in this mode. Tie to GND. I/O E2 6A (tie-low) I/O pin not used in this mode. Tie to GND. I/O F2 8A (tie-low) I/O pin not used in this mode. Tie to GND. I/O G2 5A (tie-low) I/O pin not used in this mode. Tie to GND. I/O A3 4DIR (tie-high) Direction control for 4A/4B. Not used in this mode. Tie to VCCA. Input B3 1A DAT0.h Data bit 1 connected to host. Referenced to VCCA. I/O C3 Depopulated ball D3 56DIR (tie-high) Direction control for 5A/5B and 6A/6B. Not used in this mode. Tie to VCCA. Input E3 GND GND Ground F3 12A DNU Output pin not used in this mode. Do not use. Leave unconnected. Output G3 11A (tie-low) Input pin not used in this mode. Tie to GND. Input A4 2DIR (tie-high) Direction control for 2A/2B. Not used in this mode. Tie to VCCA. Input B4 1DIR DAT0-dir.h Direction control for 1A/1B Input C4 3DIR (tie-high) Direction control for 3A/3B. Not used in this mode. Tie to VCCA. Input D4 GND GND Ground E4 CS0 CS0.h Card select from host. Active low. When CS0 = high, 1A, 2A, 3A, 4A, 1B, 2B, 3B, 4B, and 9B1 are placed in Hi Z. Input F4 13A (tie-low) Input pin not used in this mode. Tie to GND. Input G4 CS1 (tie-high) Card select. Not used in this mode. For proper operation tie to VCCA. Input A5 MODE1 (tie-low) MODE1, MODE0 determine mode of operation (see Table 1). Tie to GND in this mode. Input B5 MODE0 (tie-low) MODE1, MODE0 determine mode of operation (see Table 1). Tie to GND in this mode. Input C5 GND GND Ground D5 4B DNU I/O pin not used in this mode. Leave unconnected. I/O E5 GND GND Ground F5 7B DNU I/O pin not used in this mode. Leave unconnected. I/O G5 8B DNU I/O pin not used in this mode. Leave unconnected. I/O A6 10B1 CLK Clock signal connected to card Output B6 9B1 CMD Command signal connected to card Output C6 2B DNU I/O pin not used in this mode. Leave unconnected. I/O D6 11B DNU Output pin not used in this mode. Leave unconnected. Output E6 10B2 DNU Output pin not used in this mode. Leave unconnected. Output F6 5B DNU I/O pin not used in this mode. Leave unconnected. I/O |
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