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PC87334VLJ Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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PC87334VLJ Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 102 page  TLC12039 PRELIMINARY March 1995 PC87334VLJPC87334VJG SuperIO TM 33V5V Floppy Disk Controller Dual UARTs Infrared IEEE1284 Parallel Port and IDE Interface General Description The PC87334VLJPC87334VJG is a single chip solution for most commonly used IO peripherals in ISA EISA and Mi- croChannel based computers It incorporates a Floppy Disk Controller (FDC) two full featured UARTs an IEEE 1284 compatible parallel port and all the necessary control logic for an IDE interface Standard PC-AT address decod- ing for all the peripherals and a set of configuration registers are also implemented in this highly integrated member of the SuperIO family Advanced power management fea- tures mixed voltage operation and integrated Serial-Infra- Red (SIR) support makes the PC87334 an ideal choice for low-power andor portable personal computer applications The PC87334 FDC uses a high performance digital data separator eliminating the need for any external filter compo- nents It is fully compatible with the PC8477 and incorpo- rates a superset of DP8473 NEC mPD765 and N82077 flop- py disk controller functions All popular 525 and 35 flop- py drives including the 288 MB 35 floppy drive are sup- ported In addition automatic media sense and 2 Mbps tape drive support are provided by the FDC The two UARTs are fully NS16450 and NS16550 compati- ble Both ports support MIDI baud rates and one port also supports IrDA and the HP SIR compliant signaling protocol The parallel port is fully IEEE 1284 level 2 compatible The SPP (Standard Parallel Port) is fully compatible with ISA EISA and MicroChannel parallel ports In addition to the SPP EPP (Enhanced Parallel Port) and ECP (Extended Ca- pabilities Port) modes are supported by the parallel port All IDE control signals with DMA support are provided by the PC87334 Only external signal buffers are required to imple- ment a complete IDE interface (Continued) Features Y 100% compatible with ISA EISA and MicroChannel architectures Y The Floppy Disk Controller Software compatible with the DP8473 the 765A and the N82077 16-byte FIFO (disabled by default) Burst and Non-Burst modes Perpendicular Recording drive support New high-performance internal digital data separator (no external filter components required) Low-power CMOS with enhanced power-down mode Automatic media-sense support with full IBM TDR (Tape Drive Register) implementation Supports fast 2 Mbps and standard 1 Mbps 500 kbps250 kbps tape drives Y The Bidirectional Parallel Port Enhanced Parallel Port (EPP) compatible Extended Capabilities Port (ECP) compatible includ- ing level 2 support Bidirectional under either software or hardware control Compatible with ISA EISA and MicroChannel architectures Ability to multiplex FDC signals on parallel port pins allows use of an external Floppy Disk Drive (FDD) Includes protection circuit to prevent damage to the parallel port when a connected printer is powered up or is operated at a higher voltage (Continued) Block Diagram TLC12039 – 1 TRI-STATE is a registered trademark of National Semiconductor Corporation SuperIOTM is a trademark of National Semiconductor Corporation IBM MicroChannel PC-AT and PS2 are registered trademarks of International Business Machines Corporation C1995 National Semiconductor Corporation RRD-B30M65Printed in U S A |
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