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PC87310 Dataheets PDF



Part Number PC87310
Manufacturers National Semiconductor
Logo National Semiconductor
Description PC87310 (SuperI/OTM) Dual UART with Floppy Disk Controller and Parallel Port
Datasheet PC87310 DatasheetPC87310 Datasheet (PDF)

PC87310 (SuperI O) Dual UART with Floppy Disk Controller and Parallel Port August 1990 PC87310 (SuperI O TM ) Dual UART with Floppy Disk Controller and Parallel Port General Description The PC87310 incorporates two full function UARTs a floppy disk controller (FDC) with analog data separator one parallel port game port decode hard disk controller decode standard XT AT address decoding for on-chip functions and a Configuration Register in one chip Thus it offers a single chip solution to the mo.

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PC87310 (SuperI O) Dual UART with Floppy Disk Controller and Parallel Port August 1990 PC87310 (SuperI O TM ) Dual UART with Floppy Disk Controller and Parallel Port General Description The PC87310 incorporates two full function UARTs a floppy disk controller (FDC) with analog data separator one parallel port game port decode hard disk controller decode standard XT AT address decoding for on-chip functions and a Configuration Register in one chip Thus it offers a single chip solution to the most commonly used IBM PC XT and AT peripherals The floppy disk controller is fully compatible with the industry standard 765 architecture but it includes many more advanced options such as a high performance data separator extended track range to 4096 implied seek command scan command and both standard IBM formats as well as ISO 3 5 formats The UARTs are compatible with either the INS8250N-B or the NS16450 The parallel port hard disk select and game port select logic maintain complete compatibility with the IBM XT and AT Hardware selects XT or AT compatibility The Configuration Register is one byte wide and can be programmed via hardware or software Through its control the user can assign standard AT addresses and disable any major on-chip function (e g the FDC either UART or the parallel port) independently of the others This allows for flexibility in system configuration when adapter cards contain duplicate functions Y Y Y Y Y Y Y Y Y Y Y Features Y Y Y Y Y Y 100% compatible to the IBM PC XT and AT architectures Software compatible to the INS8250N-B INS8250A and NS16450 UARTs 100% compatible to the industry standard 765A architecture On-chip analog data separator operates up to 1 Mb s Implements all DP8473 Floppy Disk Controller functions Bidirectional parallel port for printer or scanner operation Provides all standard Centronics and IBM PC XT and AT interface signals Y Y Y Y Y Decoding and chip selects for an IDE hard disk interface Address decoding and strobe generation for a game port Fabricated in NSC’s 1 5 m M2CMOS process Low power CMOS with a power down mode 100-pin EIAJ plastic flatpak package Integrates all PC-XT PC-AT logic On chip 24 MHz crystal oscillator DMA enable logic IBM compatible address decode of A0 – A9 24 mA mP bus interface buffers 40 mA floppy drive interface buffers Data rate and drive control registers Precision analog data separator Self-calibrating PLL and delay line Automatically chooses one of three filters Intelligent read algorithm Two pin programmable precompensation modes Other enhancements Implied seek up to 4000 tracks IBM or ISO formatting Separate interrupt request lines for the parallel and serial ports Adds or deletes standard asynchronous communication bits (start parity and stop) to or from the serial data Independently controlled transmit receive line status and data set interrupts Programmable baud generators for each UART channel divide the input clock by 1 to (216 b 1) and generate the internal 16 c sample clock MODEM control functions for each UART channel (CTS RTS DSR DTR RI and DCD) Fully programmable serial-interface characteristics 5 6 7 or 8 bit characters Even odd or no parity generation and detection 1 1 or 2 stop bit generation High current drive capability for the parallel port Note This part is patented TRI-STATE is a registered trademark of National Semiconductor Corporation Plus-2TM and SuperI OTM are trademarks of National Semiconductor Corporation IBM PC-XT PC-AT and PS 2 are registered trademarks of International Business Machines Corporation C1995 National Semiconductor Corporation TL C 10591 RRD-B30M65 Printed in U S A Table of Contents 1 0 BLOCK DIAGRAM 1 1 Block Diagram of a Serial Port 1 2 Block Diagram of the Floppy Disk Controller 1 3 Block Diagram of the Parallel Port 1 4 I O Address Decode 2 0 PIN DESCRIPTIONS 3 0 CONNECTION DIAGRAM 4 0 FUNCTIONAL DESCRIPTION 4 1 Address Decoder 4 2 Configuration Port 4 3 Serial Ports 4 4 Floppy Disk Controller 4 5 Parallel Port 4 6 Hard Disk Interface 4 7 Game Port 5 0 ABSOLUTE MAXIMUM RATINGS 6 0 DC ELECTRICAL CHARACTERISTICS 7 0 AC ELECTRICAL CHARACTERISTICS 2 Basic Configuration TL C 10591 – 1 3 1 0 Block Diagram TL C 10591 – 2 1 1 BLOCK DIAGRAM OF A SERIAL PORT TL C 10591 – 3 4 1 0 Block Diagram (Continued) 1 2 BLOCK DIAGRAM OF THE FLOPPY DISK CONTROLLER TL C 10591 – 4 Note 1 See Figure 3 for filter description 5 1 0 Block Diagram (Continued) 1 3 BLOCK DIAGRAM OF THE PARALLEL PORT TL C 10591 – 5 1 4 I O ADDRESS DECODE TABLE 1-1 Address Range 278H–27FH 378H–37FH 3BCH–3BEH 3F8H–3FFH 2F8H–2FFH 320H – 324H (XT) 1F0H – 1F7H 3F6H 7 (AT) HCS0 Active HCS0 HCS1 Active Function Parallel Port 3 Parallel Port 2 Parallel Port 1 Serial Port 1 Serial Port 2 Hard Disk Select Floppy Disk Game Port Select Configuration Port 3F2H 4 5 7 201 3F3H READ D7 from FDC D0–D6 from HDD WRITE D0–D7 to FDC Write only register that requires two consecutive writes to change the data 6 2 0 Pin Descripti.


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