NHE6300ESB S L7XJ Intel, NHE6300ESB S L7XJ Datasheet - Page 222

• Manufacturer Part Number: NHE6300ESB S L7XJ
• Manufacturer: Intel

Specifications of NHE6300ESB S L7XJ

• Lead Free Status / RoHS Status: Compliant

5.18.2.1 Power On
5.18.2.2 BIOS Initialization
5.18.2.3 Driver Initialization
5.18.2.4 EHC Resets
Intel
DS
222
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6300ESB I/O Controller Hub
The suspend well is a “deeper” power plane than the core well, which means that the
suspend well is always functional when the core well is functional but the core well may
not be functional when the suspend well is. Therefore, the suspend well reset pin
(RSMRST#) deasserts before the core well reset pin (PWROK) rises.
BIOS performs a number of platform customization steps after the core well has
powered up as described in the Intel
See Chapter 4 of the Enhanced Host Controller Interface Specification for Universal
Serial Bus, Revision 0.96.
In addition to the standard Intel
are reset by the HCRESET bit and the transition from the D3hot device power
management state to the D0 state. The effects of each of these resets are:
1. The suspend well reset deasserts, leaving all registers and logic in the suspend well
2. The core well reset deasserts, leaving all registers and logic in the core well in the
in the default state. However, it is not possible to read any registers until after the
core well reset deasserts. Note that normally the suspend well reset will only occur
when a desktop system is unplugged or the battery is removed from a mobile
system. In other words, suspend well resets are not easily achieved by software or
the end-user. This step will typically not occur immediately before the remaining
steps.
default state. The EHC configuration space is accessible at this point. Note that the
core well reset may (and typically does) occur without the suspend well reset
asserting. This means that all of the Configure Flag and Port Status and Control bits
(and any other suspend-well logic) may be in any valid state at this time.
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6300ESB ICH hardware resets, portions of the EHC
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6300ESB ICH BIOS Specification.
Order Number: 300641-004US
Intel
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6300ESB ICH—5
November 2007