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FDC37M707 데이터시트(PDF) 8 Page - SMSC Corporation |
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FDC37M707 데이터시트(HTML) 8 Page - SMSC Corporation |
8 / 194 page 8 DESCRIPTION OF PIN FUNCTIONS PIN No./QFP NAME TOTAL SYMBOL BUFFER TYPE 92 Ring Indicator 2/8042 P16 1 nRI2/P16 I/IO24 PARALLEL PORT INTERFACE (17) 75:68 Parallel Port Data Bus 8 PD[0:7] IO24 66 Printer Select 1 nSLCTIN OD24/O24 67 Initiate Output 1 nINIT OD24/O24 83 Auto Line Feed 1 nALF OD24/O24 82 Strobe Signal 1 nSTROBE OD24/O24 81 Busy Signal 1 BUSY I 77 Acknowledge Handshake 1 nACK I 80 Paper End 1 PE I 79 Printer Selected 1 SLCT I 78 Error at Printer 1 nERROR I KEYBOARD/MOUSE INTERFACE (6) 59 Keyboard Data 1 KDAT IOD16 58 Keyboard Clock 1 KCLK IOD16 57 Mouse Data 1 MDAT IOD16 56 Mouse Clock 1 MCLK IOD16 64 Keyboard Reset 1 KBDRST (Note 3) O4 63 Gate A20 1 A20M O4 Note 1: For 12 bit addressing, SA0:SA11 only, nCS should be tied to GND. For 16 bit external address qualification, address bits SA11:SA15 can be "ORed" together and applied to nCS. The nCS pin functions as SA11 in full 16 bit Internal Address Qualification Mode. CR24.6 controls the FDC37M70x addressing modes. Note 2: The "n" as the first letter of a signal name indicates an "Active Low" signal. Note 3: KBDRST is active low. Note 4: The pull-down on this pin is always active including when the output driver is tristated and regardless of the state of internal PWRGOOD. Note 5: Requires external pull-up resistor. |
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