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Intel® 82801EB (ICH5), 82801ER (ICH5R), and 82801DB (ICH4) Enhanced Host Controller Interface (EHCI) Programmer’s Reference Manual (PRM)
This document was prepared to assist Integrated Hardware Vendors (IHV) in supporting the Intel® I/O Controller Hub4 (ICH4) EHCI feature set. This document also describes the general requirements to develop an EHCI (Enhanced Host Controller Interface) system device driver that will make use of the EHCI interface. The primary purpose of this document is to supplement the information provided in the Enhanced Host Controller Interface Specification For Universal Serial Bus for use by IHVs and Intel customers developing their own driver interface.
This document also describes functions that the BIOS or Operating Systems (OS) must perform in order to ensure correct and reliable operation of the platform. This document will be supplemented from time to time with specification updates. The specification updates contain information relating to the latest programming changes. Check with your Intel representative for availability of specification updates.
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