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National Semiconductor Electronic Components Datasheet

PC87332VLJ-5 Datasheet

PC87332VLJ (3.3V/5V) and PC87332VLJ-5 (5V) (SuperI/OTM III Premium Green) Floppy Disk Controller/ Dual UARTs/ IEEE1284 Parallel Port/ and IDE Interfac

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PRELIMINARY
May 1995
PC87332VLJ (3 3V 5V) and PC87332VLJ-5 (5V)
(SuperI OTM III Premium Green)
Floppy Disk Controller Dual UARTs IEEE1284
Parallel Port and IDE Interface
General Description
The PC87332VLJ and PC87332VLJ-5 are single chip solu-
tions 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 manage-
ment features and mixed voltage operation in the VLJ ver-
sion 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 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 5 25 and 3 5 flop-
py drives including the 2 88 MB 3 5 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
(Continued)
Features
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
Y 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
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
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
TL C 11930 – 1
RRD-B30M65 Printed in U S A


National Semiconductor Electronic Components Datasheet

PC87332VLJ-5 Datasheet

PC87332VLJ (3.3V/5V) and PC87332VLJ-5 (5V) (SuperI/OTM III Premium Green) Floppy Disk Controller/ Dual UARTs/ IEEE1284 Parallel Port/ and IDE Interfac

No Preview Available !

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 Ca-
pabilities 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 ac-
cessed 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 oper-
ate 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 UARTs
Software compatible with the PC16550A and
PC16450
MIDI baud rate support
Y IDE Control Logic
All IDE control signals Only external signal buffers
required to implement full IDE interface
Y Address Decoder
Provides selection of all primary and secondary ISA
addresses including COM1 – 4 and LPTA – C
Y 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
Y Mixed Voltage Support
Supports standard 5V operation
Supports 3 3V operation
Supports mixed internal 3 3V operation with 3 3V 5V
external configuration
Y General
100% compatible with ISA EISA and MicroChannel
architectures
100-Pin PQFP package is pin compatible with the
PC87312 and PC87322VF
2


Part Number PC87332VLJ-5
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
Maker National Semiconductor
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PC87332VLJ-5 Datasheet PDF






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National Semiconductor





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