MiTAC E-8590, Service Manual, Page: 48 / 252

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LCD PC E
LCD PC E
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8590 MAINTENANCE
8590 MAINTENANCE
1.2.8 IEEE1394: VIA VT6306 OHCI-LINK Layer Controller
The VT6306 IEEE 1394 OHCI Host Controller provides high performance serial connectivity. It implements the
Link and Phy layers for IEEE 1394-1995 High Performance Serial Bus and 1394a Draft 4.0. It is compliant with
1394 Open HCI 1.0 and 1.1 with DMA engine support for high performance data transfer via a 32-bit bus master
PCI host bus interface.
The VT6306 supports 100, 200 and 400 Mbit/sec transmissions via an integrated 3-port PHY. The VT6306
services two types of data packets: asynchronous and isochronous (real time). The 1394 link core performs
arbitration requesting, packet generation and checking, and bus cycle master operations. It also has root node
capability and performs retry operations.
The VT6306 is ready to provide industry-standard IEEE 1394 peripheral connections for desktop and mobile PC
platforms. Support for the VT6306 is built into Microsoft Windows 98, Windows ME, and Windows 2000.
150mA output current for VPPOUT
Only 3.3V is required for chip normal operation
12V is not required for 3.3V or 5V Output
Break-Before-Make Switching
16-Pin SSOP Package (209 mil)