8889 8889 N/B MaintenanN/B Maintenanccee
- External I/O signal controls enabling of graphics controller into standby / suspend-off state
- Auto clock gating for inactive functions to achieve maximum power savings
- I2C Serial Bus and DDC / E-DDC Monitor Communications for Plug-and Play configuration
1.2.2.2 VT8235 CE
The VT8235 Version CE South Bridge is a high integration, high performance, power-efficient, and high
compatibility device that supports Intel and non-Intel based processor to V-Link bus bridge functionality to
make a complete Microsoft PC2001-compliant PCI/LPC system. The VT8235 Version CE includes standard
intelligent peripheral controllers:
a) IEEE 802.3 compliant 10 / 100 Mbps PCI bus master Ethernet MAC with standard MII interface to
external PHYceiver
b) Master mode enhanced IDE controller with dual channel DMA engine and interlaced dual channel
commands. Dedicated FIFO coupled with scatter and gather master mode operation allows high
performance transfers between PCI and IDE devices. In addition to standard PIO and DMA mode
operation, the VT8235 Version CE also supports the UltraDMA-133, 100, 66, and 33 standards to allow
reliable data transfer at rates up to 133 MB/sec. The IDE controller is SFF-8038i v1.0 and Microsoft
Windows-family compliant.
c) Universal Serial Bus controller that is USB v2.0 / 1.1 and Universal HCI v2.0 / 1.1 compliant. The
VT8235 Version CE includes three root hubs with six function ports with integrated physical layer
transceivers. The USB controller allows hot plug and play and isochronous peripherals to be inserted
into the system with universal driver support. The controller also implements legacy keyboard and
mouse support so that legacy software can run transparently in a non-USB-aware operating system
environment.
d) Keyboard controller with PS2 mouse support.
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ACEC
