PC87310 Datasheet | National Semiconductor

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 monly used IBM PC XT and AT peripherals The floppy disk controller is fully patible 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 mand scan mand and both standard IBM formats as well as ISO 3 5 formats The UARTs are patible with either the INS8250N-B or the NS16450 The parallel port hard disk select and game port select logic maintain plete patibility with the IBM XT and AT Hardware selects XT or AT patibility 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 Features 100% patible to the IBM PC XT and AT architectures Software patible to the INS8250N-B INS8250A and NS16450 UARTs 100% patible 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 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...