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PC97338VLJ
ACPI 1.0 and PC98/99 Compliant SuperI/O
Block DiagramConfiguration
Registers
Floppy Disk
Controller (FDC)
with
Digital Data
Separator (DDS)
(Enhanced 8477)
High Current Driver
Power-
Down
Logic
Plug and Play
Support
Micro-
Data and
Control
Floppy
Drive
Interface
IRQ Data Handshake
Configuration Input
Serial Interface
Serial
Interrupt
and DMA
SCC2
(16550 UART +
SCC1
(16550 UART)
Floppy
Drive
InterfaceIEEE1284
Control
Parallel Port
Interface
Fast IR
Interface
DMA IRQ Input
General
Chip Select
CS1,0
Channels
Signals
Signals
INFRARED)
Address
processor
1.
an
d P
9 C
General DescriptionThe PC97338 is a fully ACPI 1.0 and PC98/99 com-
pliant, ISA based Super I/O. It is functionally compat-
ible with the PC87338. It includes a Floppy Disk
Controller (FDC), two Serial Communication Control-
lers (SCC) for UART and Infrared support, one
IEEE1284 compatible Parallel Port, and two general
purpose Chip Select signals for game port support.
The device supports power management as well as
3.3V and 5V mixed operation making it particularly
suitable for notebook and sub-notebook applications.
The PC87338 and PC97338 are fully compliant to the
Plug and Play specifications included in the "Hard-
ware Design Guide for Microsoft Windows 95".
Differences between the PC87338 and PC97338 are
indicated in italics. These differences are summarized
in Appendix A.
Features Meets ACPI 1.0 and PC98/99 requirements Backward compatible with PC87338 100% compatibility with Plug and Play require-
ments specified in the “Hardware Design Guide for
Microsoft Windows 95”, ISA, EISA, and Micro-
Channel architectures A special Plug and Play module includes:
Flexible IRQs, DMAs and base addresses
General Interrupt Requests (IRQs) that can be
multiplexed to the ten supported IRQs
November 1998
PC87338/PC97338
ACPI 1.0 and PC98/99 Compliant SuperI/O
