F85226A数据手册FINTEK中文资料规格书

描述 Description

The F85226AF 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 F85226AF 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 F85226AF is optimal solution for the non-ISA chipset, the package of F85226AF will be the best chosen for economic solution and save the layout size of Motherboard.(1)The F85226AF 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 F85226AF also provides programmable general purpose I/O pins for user. It is completely LPC to ISA bridge specialized chip.(1)(1)

特性 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 VDD3V (Signal 5V tolerance)
128pin PQFP package
128-QFP Green Package