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FDC37N769 Arkusz danych(PDF) 11 Page - SMSC Corporation |
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FDC37N769 Arkusz danych(HTML) 11 Page - SMSC Corporation |
11 / 137 page SMSC DS – FDC37N769 Page 11 of 137 Rev. 02-16-07 DATASHEET TQFP PIN # NAME SYMBOL BUFFER TYPE DESCRIPTION 72 nInitiate Output/ FDC nDirection Control (Note 3) nINIT nDIR (OD14/OP1 4)/OD12 This output is bit 2 of the printer control register. This is used to initiate the printer when low. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 74 nAutofeed Output/ FDC nDensity Select (Note 3) nAUTOFD nDENSEL (OD14/OP1 4)/OD12 This output goes low to cause the printer to automatically feed one line after each line is printed. The nAUTOFD output is the complement of bit 1 of the Printer Control Register. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 75 nStrobe Output/ FDC nDrive Select 0 (Note 3) nSTROBE nDS0 (OD14/OP1 4)/OD12 An active low pulse on this output is used to strobe the printer data into the printer. The nSTROBE output is the complement of bit 0 of the Printer Control Register. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 59 Busy/ FDC nMotor On 1 BUSY nMTR1 I/OD12 This is a status output from the printer, a high indicating that the printer is not ready to receive new data. Bit 7 of the Printer Status Register is the complement of the BUSY input. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 60 nAcknowl- edge/FDC nDrive Select 1 nACK nDS1 I/OD12 A low active output from the printer indicating that it has received the data and is ready to accept new data. Bit 6 of the Printer Status Register reads the nACK input. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 58 Paper End/ FDC nWrite Data PE nWRDATA I/OD12 Another status output from the printer, a high indicating that the printer is out of paper. Bit 5 of the Printer Status Register reads the PE input. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 57 Printer Selected Status/ FDC nWrite Gate SLCT nWGATE I/OD12 This high active output from the printer indicates that it has power on. Bit 4 of the Printer Status Register reads the SLCT input. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 73 nError/FDC nHead Select nERROR nHDSEL I/OD12 A low on this input from the printer indicates that there is a error condition at the printer. Bit 3 of the Printer Status register reads the nERR input. Refer to Parallel Port description for use of this pin in ECP and EPP mode. See FDC Pin definition. 69 Port Data 0/FDC nIndex PD0 nINDEX IOP14/IS Port Data 0 See FDC Pin definition. 68 Port Data 1/FDC nTrack 0 PD1 nTRK0 IOP14/IS Port Data 1 See FDC Pin definition. 67 Port Data 2/FDC nWrite Protected PD2 nWRTPRT IOP14/IS Port Data 2 See FDC Pin definition. |
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