Справочник Пользователя для Intel GME965

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Theory of Operation 
 
 
316704-001 / Development Kit User’s Manual   
 27 
connector at J5A1. Four ports are routed to USB front panel headers at J6H3 and 
J6H4. The last is routed to the PCI-Express* docking connector at J9C1. 
There are Five UHCI Host Controllers and two EHCI Host Controllers. Each UHCI Host 
Controller includes a root hub with two separate USB ports each, for a total of ten 
legacy USB ports. The first EHCI Host Controller includes a root hub that supports up 
to six USB 2.0 ports and the second EHCI Host Controller includes a root hub that 
supports up to four USB 2.0 ports.  
The connection to either the UHCI or EHCI controllers is dynamic and dependant on 
the particular USB device. As such, all ports support High Speed, Full Speed, and Low 
Speed (HS/FS/LS). 
3.4.2.7 
LPC Super I/O (SIO)/LPC Slot 
An SMSC SIO1007-JV serves as the SIO on the development board. Shunting the 
jumper at J7D1 to the 2-3 positions can disable the SIO by holding it in reset. This 
allows other SIO solutions to be tested in the LPC slot at J8E1. A sideband header is 
provided at J9G1 for this purpose. This sideband header also has signals for LPC 
power management. Information on this header is on sheet 44 of the development 
board schematics. 
3.4.2.8 
Serial, IrDA 
The SMSC SIO incorporates a serial port, and IrDA (Infrared), as well as general 
purpose IOs (GPIO). The Serial Port connector is provided at J2A2, and the IrDA 
transceiver is located at U4A1. The IrDA transceiver on the development board 
supports SIR (slow IR), FIR (Fast IR) and CIR (Consumer IR). The option to select 
between these is supported through software. 
3.4.2.9 
BIOS Firmware Hub (FWH) 
An 8-Mbit Flash device used on the development board to store system and video. The 
reference designator location of the FWH device is U8G1. The BIOS can be upgraded 
using an MS-DOS* based utility called FWHFlash and is addressable on the LPC bus off 
of the ICH8-M. FWHFlash is available on request from your Intel representative. 
3.4.2.10  SPI 
The Serial Peripheral Interface on ICH8-M is used to support two compatible flash 
devices at locations U7E1 and U6D2. By default, the SPI flash is used to store 
configuration data for the LAN controller. Optionally it may be used for BIOS and AMT 
firmware storage.  
It is necessary to set certain strapping options to enable either a FWH-based or SPI-
based BIOS. Optionally, it is also possible to direct BIOS access to the PCI interface. 
Table 7
 describes these strapping options.