w83628f Winbond Electronics Corp America, w83628f Datasheet - Page 3

• Manufacturer Part Number: w83628f
• Description: Pci To Isa Bridge Set
• Manufacturer: Winbond Electronics Corp America

1. GENERAL DESCRIPTION
W83628F is a PCI-to-ISA bus conversion IC. W83629D is a condensed centralizer IC for IRQ and
DMA control. W83628F and W83629D together form a complete set for the PCI-to-ISA bridge.
For the new generation Intel chipset Camino and Whitney, featuring LPC bus, there is no support for
ISA bus and slots. However the demand of ISA devices still exist. For such case, W83628F plus
W83629D are the best companion solution for the non-ISA chipset. Also the packages of W83628F
(128-QFP) and W83629D (48-LQFP) had been chosen to be the most economic solution for save the
M/B board layout size and cost.
For the new generation chipset featuring LPC interface and support no ISA bus, W83627HF/F
(Winbond LPC I/O) together with the set of W83628F and W83629D is the complete solution.
2. FEATURES
PCI to ISA Bridge
3. PACKAGE
Full ISA Bus Support including ISA Masters
5V ISA and 3.3V PCI interfaces
PC/PCI DMA protocol for Software Transparent
IRQ Serializer for ISA Parallel IRQ transfer to Serial IRQ
Supports 3 fully ISA Compatible Slots without Buffering
PCI Bus at 25MHz, 33MHz and up to 40MHz
Supports Programmable ISA Bus Divide the PCI Bus Clock into 3 or 4
All ISA Signals can be Isolate
Supports Configuration registers for programming performance
128-pin PQFP for W83628F
48-pin LQFP for W83629D
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W83628F & W83629D
Publication Release Date: May 18, 2005
Revision A1