AMD-750 Datasheet, PDF (10/12 Pages) Advanced Micro Devices – Chipset

AMD-750™ Chipset Overview
23016A—August 1999
AMD-756™ Peripheral Bus Controller
Key features of the AMD-756 controller are listed in this
section. For more information, see the AMD-756™ Peripheral
Bus Controller Data Sheet, order# 22548.
The AMD-756 contains the following functional units:
n Integrated ISA bus controller
n Enhanced master-mode PCI IDE controller with ultra
DMA-33/66 support
n USB controller
n Keyboard/mouse controller
n Real-time clock
PCI-to-ISA Bridge
The AMD-756 controller includes a PC97-compliant PCI-to-ISA
bridge with the following features:
n PCI 2.2-compliant interface
n Eight-level doubleword buffer between PCI and ISA buses
n Dual cascaded AT-8259-compatible interrupt controllers
n Dual AT-8237-compatible DMA controllers
n Type F DMA transfer support
n Support for ISA legacy distributed DMA across the PCI bus
n AT-8254-compatible programmable interval timer
n Integrated real-time clock w/extended 256-byte CMOS RAM
n Programmable ISA bus clock
n Fast reset and gate A20 operation
n Edge-triggered or level-sensitive interrupts
n Flash, 2-Mbyte EPROM, BIOS support
n Integrated keyboard controller with PS/2 mouse support
8
AMD-756™ Peripheral Bus Controller