SOYO SY-7VMA-B User Manual page 17

Motherboard Description SY-7VMA-B
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The VT8605 also integrates S3 ® 's Savage4 graphics accelerator into a
single chip. The VT8605 brings mainstream graphics performance to the
Value PC with leading-edge 2D, 3D and DVD video acceleration into a
cost effective package. Based on its capabilities, the VT8605 is an ideal
solution for the consumer, corporate desktop users and entry level
professionals.
The industry's first integrated AGP 4X solution, the VT8605 combines
AGP 4X with S3's DX6 texture compression (S3TC) and massive 2Kx2K
textures to deliver unprecedented 3D performance and image quality for
the Value PC desktop market.
The 352-pin VT8231 BGA PCI-LPC bridge supports four levels
(doublewords) of line buffers, type F DMA transfers and delay transaction
to allow efficient PCI bus utilization and (PCI-2.1 compliant). The
VT8231 also includes an integrated Super I/O, 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 four USB interface with root hub and two function ports with
built-in physical layer transceivers, Distributed DMA support, integrated
AC-97 link for basic audio and HSP based modem functions, integrated
hardware monitoring and OnNow / ACPI compliant advanced
configuration and power management interface. VT8231 also has an
integrated MAC and 10Mbit PHY for LAN connection. It can bypass the
internal PHY with external home PNA with a 1Mbit PHY or a 10/100Mbit
PHY through the MII interface.
For sophisticated power management, the VT8605 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 VT8231 south bridge chip,
a complete power conscious PC main board can be implemented with no
external TTLs.
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