4
The AGP interface is AGP specification Rev 2.0 compliant, and
supports 2x devices. The PCI bus interface complies with PCI
Rev. 2.2, and supports 3.3V and power supplies. Five PCI bus
masters are supported in addition to the host and PCI-to-ISA I/O
bridge.
VIA South Bridge Chipset
Note: The MS7127C supports two VIA South Bridge chipsets—
the VIA VT82C686A and the VIA VT82C686B. The VIA
VT82C686A is standard and supports UDMA33/66. The VIA
VT82C686B is optional and supports UDMA100.
The VIA VT82C686A SB (South Bridge) chipset comes in a 352-pin
BGA package. The PCI to ISA Bridge has an integrated ISA bus
controller with integrated DMA, timer, and interrupt controllers. The
VIA VT82C686A chipset supports UDMA33/66.
As an option you can get the MS7127C with the VIA VT82C686B
SB chipset, which supports UDMA100.
The Real Time Clock features extended 256 byte CMOS RAM
and a day and month alarm for the ACPI (Advanced Configura-
tion and Power Interface).
There is an integrated USB controller with a built-in root hub and
four function ports. The integrated Ultra DMA33/66 master mode
EIDE controller with enhanced PCI bus commands.
The UltraDMA33/66 Master Mode PCI EIDE controller features
dual channel master mode PCI supporting Enhanced IDE (EIDE)
devices and employ transfer rates up to 33 MB/sec to cover PIO
mode 4, multi-word DMA mode 2 drives, and UltraDMA-33 in-
terface. The SB chipset also supports ATAPI compliant devices
including DVD devices and four USB 1.1 ports for serial trans-
fers at 12 or 1.5 Mbits/sec.
The integrated super IO controller supports two serial ports, an
IR port, parallel port, and floppy disk controller functions. There
is also system monitor support, providing system feedback of
voltage, temperature, and fan speed conditions.