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PC87332VLJ Dataheets PDF



Part Number PC87332VLJ
Manufacturers National Semiconductor
Logo National Semiconductor
Description PC87332VLJ (3.3V/5V) and PC87332VLJ-5 (5V) (SuperI/OTM III Premium Green) Floppy Disk Controller/ Dual UARTs/ IEEE1284 Parallel Port/ and IDE Interfac
Datasheet PC87332VLJ DatasheetPC87332VLJ Datasheet (PDF)

PC87332VLJ (3 3V 5V) and PC87332VLJ-5 (5V) (SuperI O TM III Premium Green) Floppy Disk Controller Dual UARTs IEEE1284 Parallel Port and IDE Interface PRELIMINARY May 1995 PC87332VLJ (3 3V 5V) and PC87332VLJ-5 (5V) (SuperI O TM III Premium Green) Floppy Disk Controller Dual UARTs IEEE1284 Parallel Port and IDE Interface General Description The PC87332VLJ and PC87332VLJ-5 are single chip solutions for most commonly used I O peripherals in ISA EISA and MicroChannel based computers It incorporates.

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PC87332VLJ (3 3V 5V) and PC87332VLJ-5 (5V) (SuperI O TM III Premium Green) Floppy Disk Controller Dual UARTs IEEE1284 Parallel Port and IDE Interface PRELIMINARY May 1995 PC87332VLJ (3 3V 5V) and PC87332VLJ-5 (5V) (SuperI O TM III Premium Green) Floppy Disk Controller Dual UARTs IEEE1284 Parallel Port and IDE Interface General Description The PC87332VLJ and PC87332VLJ-5 are single chip solutions for most commonly used I O peripherals in ISA EISA and MicroChannel 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 decoding for all the peripherals and a set of configuration registers are also implemented in this highly integrated member of the SuperI O family Advanced power management features and mixed voltage operation in the VLJ version make the PC87332 chips an ideal for low-power and or portable personal computer applications The PC87332 FDC uses a high performance digital data separator eliminating the need for any external filter components It is fully compatible with the PC8477 and incorporates a superset of DP8473 NEC mPD765 and N82077 floppy disk controller functions All popular 5 25 and 3 5 floppy drives including the 2 88 MB 3 5 floppy drive are supported In addition automatic media sense and 2 Mbps tape drive support are provided by the FDC The two UARTs are fully NS16450 and NS16550 compatible Both ports support MIDI baud rates (Continued) Features Y Y 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 Supports fast 2 Mbps and standard 1 Mbps 500 kbps 250 kbps tape drives Bidirectional Parallel Port Enhanced Parallel Port (EPP) compatible Extended Capabilities Port (ECP) compatible including level 2 support Bidirectional under either software or hardware control 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 TL C 11930 – 1 TRI-STATE is a registered trademark of National Semiconductor Corporation SuperI OTM is a trademark of National Semiconductor Corporation IBM MicroChannel PC-AT and PS 2 are registered trademarks of International Business Machines Corporation C1995 National Semiconductor Corporation TL C 11930 RRD-B30M65 Printed in U S A General Description (Continued) 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 Capabilities Port) modes are supported by the parallel port All IDE control signals are provided by the PC87332 Only external signal buffers are required to implement a complete IDE interface A set of eight configuration registers are provided to control various functions of the PC87332 These registers are accessed using two 8-bit wide index and data registers The ISA I O address of the register pair can be relocated using a power-up strapping option When idle advanced power management features allows the PC87332 to enter extremely low power modes under hardware or software control The PC87332VLJ can operate from a 5V or a 3 3V power supply An unique I O cell structure allows the PC87332VLJ to interface directly with 5V external components while operating from a 3 3V power supply Features (Continued) Y Y Y Y Y Y UARTs Software compatible with the PC16550A and PC16450 MIDI baud rate support IDE Control Logic All IDE control signals Only external signal buffers required to implement full IDE interface Address Decoder Provides selection of all primary and secondary ISA addresses including COM1 – 4 and LPTA – C Enhanced Power Management Special configuration registers for power-down Enhanced programmable power-down FDC command Auto power-down and wake-up modes 3 special pins for power management Typical current consumption during power-down is less than 10 mA Reduced pin leakage current Mixed Voltage Support Supports standard 5V operation Supports 3 3V operation Supports mixed internal 3 3V operation with 3 3V 5V external configuration General 100% compatible with ISA EISA and MicroChannel architectures 100-Pin PQFP package is pin compatible with the PC87312 and PC87322VF 2 Table of Contents 1 0 PIN DESCRIPTION 2 0 CONFIGURATION REGISTERS 2 1 Overview 2 2 Software Configuration 2 3 Hardware Configuration 2 4 Index and Data Registers 2 5 Base Configuration Registers 2 5 1 Function Enable Register (FER) 2 5 2 Function Address Re.


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