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F71805FG Datasheet(PDF) 9 Page - Feature Integration Technology Inc. |
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F71805FG Datasheet(HTML) 9 Page - Feature Integration Technology Inc. |
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9 / 94 page  Dec., 2006 V0.25P 7 F71805 cycle. 41-38 LAD[3:0] I/O12t VCC These signal lines communicate address, control, and data information over the LPC bus between a host and a peripheral. 42 PCICLK INts VCC PCI clock input. 44 CLKIN INts VCC System clock input. According to the input frequency 48MHz. 5.3 FDC Pin No. Pin Name Type PWR Description 57 DENSEL# OD24 VCC Drive Density Select. Set to 1 - High data rate.(500Kbps, 1Mbps) Set to 0 – Low data rate. (250Kbps, 300Kbps) 58 MTRA# OD24 VCC Motor A On. When set to 0, this pin enables disk drive 0. This is an open drain output. 60 DRVA# OD24 VCC Drive Select A. When set to 0, this pin enables disk drive A. This is an open drain output. 62 WDATA# OD24 VCC Write data. This logic low open drain writes pre-compensation serial data to the selected FDD. An open drain output. 63 DIR# OD24 VCC Direction of the head step motor. An open drain output. Logic 1 = outward motion Logic 0 = inward motion 64 STEP# OD24 VCC Step output pulses. This active low open drain output produces a pulse to move the head to another track. 65 HDSEL# OD24 VCC Head select. This open drain output determines which disk drive head is active. Logic 1 = side 0 Logic 0 = side 1 66 WGATE# OD24 VCC Write enable. An open drain output. 68 RDATA# INts5V VCC The read data input signal from the FDD. 69 TRK0# INts5V VCC Track 0. This Schmitt-triggered input from the disk drive is active low when the head is positioned over the outermost track. 70 INDEX# INts5V VCC This Schmitt-triggered input from the disk drive is active low when the head is positioned over the beginning of a track marked by an index hole. 71 WPT# INts5V VCC Write protected. This active low Schmitt input from the disk drive indicates that the diskette is write-protected. 72 DSKCHG# INts5V VCC Diskette change. This signal is active low at power on and whenever the diskette is removed. 5.4 UART Port and SIR Pin No. Pin Name Type PWR Description 82 IRTX O12 VCC Infrared Transmitter Output. 83 IRRX INts VCC Infrared Receiver input. 118 DCD1# INt5V VCC Data Carrier Detect. An active low signal indicates the modem or data set has detected a data carrier. 119 RI1# INt5V VCC Ring Indicator. An active low signal indicates that a ring signal is being received from the modem or data set. |
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