AMD-750 Datasheet, PDF (11/12 Pages) Advanced Micro Devices – Chipset

23016A—August 1999
AMD-750™ Chipset Overview
Enhanced IDE Controllers
The AMD-756 controller includes enhanced master mode PCI
and IDE controllers with the following features:
n Ultra DMA-33/66 support for a primary and secondary dual-
drive port
n Transfer rates up to 33 Mbytes per second supporting PIO
modes 1–4, multi-word DMA mode-2 drivers, and up to 66
Mbytes per second supporting the ultra DMA-66 interface
n Sixteen-level doubleword prefetch and write buffers
n Commands can be interleaved between the two channels
n Bus master programming interface for compliance with
SFF-8038i 1.0 and Microsoft Windows^® 95
n Full-featured scatter-gather capability
n Support for ATAPI-compliant devices
n Support for PCI-native and ATA-compatibility modes
n Complete bus mastering software driver support
Universal Serial Bus Controller
The AMD-756 controller includes a universal serial bus (USB)
controller with the following features:
n USB 1.0 and OHCI compliant
n Sixteen-level doubleword FIFO for burst PCI bus access
n Root hub and four ports
n Integrated physical-layer transceivers with over-current
detection status on USB inputs
n Legacy keyboard and PS/2 mouse support
AMD-756™ Peripheral Bus Controller
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