SOYO SY-7VDA User Manual page 17

Motherboard Description SY-7VDA
The 352-pin Ball Grid Array VT8233 Client V-Link PCI / LPC controller
supports four levels (doublewords) of line buffers, type F DMA transfers
and delay transaction to allow efficient PCI bus utilization and (PCI-2.2
compliant). The VT8233 integrated PCI controller and PCI arbitration for
up to five PCI slots. One of the PCI REQ / GNT pair can be configured as
high-priority to better support a low latency PCI bus master device. The
VT8233 integrated networking MAC controller with standard MII
interface to an external PHY for 10 / 100Mb base-T Ethernet or 1 / 10Mb
PNA home networking.
The VT8233 also includes an integrated keyboard controller with PS2
mouse support, integrated DS12885 style real time clock with extended
256 byte CMOS RAM, integrated master mode enhanced IDE controller
with full scatter / gather capability and extension to UltraDMA-33/66/100
for 33/66/100 MB/sec transfer rate, integrated USB interface with root
hubs and six function ports with built-in physical layer transceivers,
Distributed DMA support, and OnNow / ACPI compliant advanced
configuration and power management interface.
For sophisticated power management, the Pro266 chipset provides
independent clock stop control for the CPU / SDRAM, PCI, and AGP
buses and Dynamic CKE control for powering down of the SDRAM. A
separate suspend-well plane is implemented for the SDRAM control
signals for Suspend-to-DRAM operation. Coupled with the VT8233 south
bridge chip, a complete power conscious PC main board can be
implemented with no external TTLs.
The Pro266 chipset is ideal for high performance, high quality, high
energy efficient and high integration desktop and notebook AGP / PCI /
LPC computer systems.
Ø
VT8233
The VT8233 South Bridge is a high integration, high performance, power-
efficient, and high compatibility device that supports Intel and non-Intel
13