Front Panel I/O Connectivity Design Guide

Front Panel High Speed I/O Bus

3.3 IEEE-1394 Connector

3.3.1 Usage Model

IEEE-1394 connectivity allows for data transfer between the PC and consumer electronic devices

such as digital cameras and camcorders.

3.3.2 Features

This chapter summarizes the design recommendations for hardware using the IEEE 1394 standards.

The IEEE 1394 high-speed serial bus complements USB by providing enhanced PC connectivity

for a wide range of devices, including consumer audio/video (A/V) components, storage

peripherals, other PCs, and portable devices.

IEEE 1394 has been adopted by the consumer electronics industry and is expected to provide a

volume, Plug and Play-compatible expansion interface for the PC.

The 100-Mb/s, 200-Mb/s, and 400-Mb/s transfer rates currently specified in IEEE 1394 are well

suited to multi-streaming I/O requirements. Figure 9 and Table 10 show the header and pin

assignments for the IEEE-1394 connector.

3.3.2.1 Basic Requirements

The following is a summary of the IEEE 1394 design considerations related to PC systems:

• A front-panel port designed to support the IEEE 1394 standard

• Support for the 1394 Open HCI specification for controllers, specifically OHCI Revision 1.1

• Plug and Play support for device configuration, control and status registers (CSRs), connectors

and cabling, and connection fault-handling

• Cable power distribution, including requirements for source devices, sink devices, self-powered

devices, and supporting CSRs

• Device power management, CSRs, and soft-power protocols

• Device command protocols for audio, video imaging, still imaging, and storage device classes

• 12 V fused supply

• See the latest revision of the IEEE 1394 standard for voltage and current requirements