MiTAC 8050QMA Service Manual page 23

1.2.8 IEEE1394 VT6301S
1.2.8.1 Overview
The VT6301S 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 specification release 1.0 and 1394a-
2000. 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 VT6301S supports 100, 200 and 400 Mbit/sec
transmission via an integrated 1-port PHY. The VT6301S 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 VT6301S is
ready to provide industry-standard IEEE 1394 peripheral connections for desktop and mobile PC platforms.
Support for the VT6301S is built into Microsoft Windows 98, Windows ME, Windows 2000 and Windows XP
1.2.8.2 Features
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32 bit CRC generator and checker for receive and transmit data
•
On-chip isochronous and asynchronous receive and transmit FIFOs for packets (2K for general
receive plus 2K for isochronous transmit plus 2K for asynchronous transmit)
•
8 isochronous transmit contexts
•
4 isochronous receive contexts
80 50QMA N/B Maintenance
80 50QMA N/B Maintenance
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