9 intel® ich9m usb controller – IEI Integration PICOe-GM45A User Manual

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PICOe-GM45A Half-Size CPU Card

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Figure 2-10: SATA II Connectors

2.5.8 Intel

®

ICH9M Serial Peripheral Interface (SPI) BIOS

The SPI is connected to an SPI BIOS chip. A licensed copy of AMI BIOS is preinstalled on

the SPI BIOS chip. A master-slave protocol is used for communication on the SPI bus.

The slave is connected to the Intel® ICH9M and is implemented as a tri-state bus.

2.5.9 Intel

®

ICH9M USB Controller

Up to seven high-speed, full-speed or low-speed USB devices are supported by the

ICH9M on the PICOe-GM45A. High-speed USB 2.0, with data transfers of up to 480MB/s,

is enabled with the ICH9M integrated Enhanced Host Controller Interface (EHCI)

compliant host controller. USB full-speed and low-speed signaling is supported by the

ICH9M integrated Universal Host Controller Interface (UHCI) controllers.

The seven USB ports implemented on the PICOe-GM45A are connected to three internal

connectors and one external connector. See

721H

Figure 2-11.

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