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Motherboard Description SY-7VCA2
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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 VT82C686B south bridge
chip, a complete power conscious PC motherboard can be implemented
with no external TTLs.
The Via 694X chipset is ideal for high performance, high quality, high
energy efficient and high integration desktop and notebook AGP / PCI /
ISA computer systems.
Ø VT82C686B
The VT82C686B PSIPC (PCI Super-I/O integrated Peripheral Controller)
is a high integration, high performance, power-efficient, and high
compatibility device that supports Intel and non-Intel based processor to
PCI bus bridge functionality to make a complete Microsoft PC99-
compliant PCI/ISA system In addition to complete ISA extension bus
functionality, the VT82C686B includes standard intelligent peripheral
controllers:
1) 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 VT82C686B also supports the UltraDMA-33
standard to allow reliable data transfer rates up to 33MB/sec throughput.
The VT82C686B also supports the UltraDMA-66/100 standard. The
IDE controller is SFF-8038I v1.0 and Microsoft Windows-family
compliant.
2) Universal Serial Bus controller that is USB v1.1 and Universal HCI
v1.1 compliant. The VT82C686B includes the root hub with four
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