Datasheet Summary
PC87200 PCI to ISA Bridge
August 1999
PC87200 PCI to ISA Bridge
1.0 General Description
The PC87200 Enhanced Integrated PCI-to-ISA bridge works with an LPC chipset to provide ISA slot support. It is a plement to the National Semiconductor PC8736x Super I/O family.
2.2 PCI-to-ISA Bridge
- PCI 2.1 pliant 33 MHz bus
- Supports PCI initiator-to-ISA and ISA master-to-PCI cycle translations
- Subtractive agent for unclaimed transactions (see the PROHIBIT signal description for exceptions)
- Parallel to Serial IRQ conversion including IRQ3,4,5,6,7,9,10,11,12,14,15
- Supports 4 ISA slots directly without buffering
- Programmable ISA clock (8.33 to 11 MHz)
- Slow slew rate on edges
2.0...