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F85226 Datasheet(PDF) 6 Page - Feature Integration Technology Inc.

Part # F85226
Description  LPC to ISA Bridge
Download  44 Pages
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Manufacturer  FINTEK [Feature Integration Technology Inc.]
Direct Link  http://www.fintek.com.tw/eng
Logo FINTEK - Feature Integration Technology Inc.

F85226 Datasheet(HTML) 6 Page - Feature Integration Technology Inc.

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Fintek
Feature Integration Technology Inc.
F85226
July, 2007
V0.25P
1
F85226
1. General Description
The F85226 is a LPC to ISA Bridge IC for new generation chipset which is no support for ISA bus and
slots. However the demand of ISA devices still exists. Therefore LPC to ISA Bridge IC is necessary to be
used for new chipset system. The F85226 is the best selection even though there is the PCI to ISA Bridge
for supporting ISA device, because the issue of package size is critical for layout requirement. Follows the
point at these issues, the F85226 is optimal solution for the non-ISA chipset, the package of F85226 will be
the best chosen for economic solution and save the layout size of Motherboard.
The F85226 absolutely meets LPC spec. 1.1 and supports fully ISA interface. Provides multi-ISA
compatible slots without buffering and supports ISA parallel IRQ transfer to serial IRQ by IRQ Serialier. The
F85226 also provides programmable general purpose I/O pins for user. It is completely LPC to ISA bridge
specialized chip.
2. Features
Meets LPC spec. 1.1
Supports LDRQ#(LPC DMA), SERIRQ(Serial IRQ)
Fully ISA bridge support except bus master(By conditions)
Supports 8/16bit I/O and memory R/W
All software transparent
All ISA signals can be isolate
ISA parallel IRQ transfer to serial IRQ by IRQ Serialier
Supports multi-slots without buffering
Supports the PCI clock to divide by 3 or 4 for ISA bus
Supports to generate two 14.318MHz buffer out from one 14.318MHz in
4 sets of address decoder supported
Supports programmable general purpose I/O pins
Powered by 3Vcc (Signal 5V tolerance)
128pin PQFP package
3. Key Specifications
Supply Voltage
3.0v to 3.6v
Operating Supply current
4mA typ.


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