3
The chipset has the following advanced USB features:
•
Compliant with Enhanced Host Controller Interface
(EHCI) Specification Revision 0.95 and Universal Host
Controller Interface (UHCI) Specification Revision 1.1
•
PCI multi-function device consists of two UHCI Host Control-
lers for full/low -speed signaling and one EHCI Host
•
Controller core for high-speed signaling
•
Supports PCI-Bus Power Management Interface Specifi-
cation release 1.1
•
Legacy support for all downstream facing ports
IEEE 1394A Con-
troller Interface
(optional)
•
Fully supports provisions of IEEE 1394-1995 and P1394A
for high performance serial bus
•
Provides two fully compliant cable ports at 100/200/400
Mbits and operates in one, two or three port mode
•
Single 24.576 MHZ crystal provide transmit/receive data
at 100/200/400 Mbits/s and LLC clock at 49.152 M
•
Separate cable bias (TPBIAS) and driver termination
voltage supply for each port
•
Support power-down feature to conserve energy in bat-
tery powered applications
Memory
The mainboard accommodates DDR200/266 DDR SDRAM (Dou-
ble Data Rate Synchronous DRAM) up to 2 GB using two 2.5V
unbuffered DIMM modules.
AC 97 Audio
Codec
The AC 97 Audio codec is compliant with the AC 97 2.2 speci-
fication, and supports 18-bit ADC (Analog Digital Converter)
and DAC (Digital Analog Converter) resolution as well as 18-bit
stereo full-duplex codec with independent and variable sam-
pling rates. Further features include support for six analog line-
level stereo inputs.
Expansion
Options
The mainboard comes with the following expansion options:
•
Three 32-bit PCI slots
•
A Communications Network Riser (CNR) slot
•
Two IDE connectors which support four IDE channels and
a floppy disk drive interface
The L7SOM supports Ultra DMA bus mastering with transfer
rates of 33/66/100 MB/sec.
Note:
If the mainboard incorporates the SiS961B or
SiS962 Southbridge chipset, the Ultra DMA bus
mastering can support up to 133 MB/sec transfer
rate. For SiS961 Southbridge chipset, the transfer
rate can support up to 100MB/sec only.
Integrated I/O
The mainboard has a full set of I/O ports and connectors:
•
Two PS/2 ports for mouse and keyboard
•
One serial port
•
One VGA port
•
One parallel port
•
One MIDI/game port
•
One LAN port
•
Two USB ports
•
Audio jacks for microphone, line-in and line-out
Onboard LAN
(optional)
The Realtek RTL8100 LAN chip is incorporated in the chipset
providing the mainboard with integrated Ethernet PCI LAN
capabilities.