5
1
Introduction
The ROCKY-3742EVFG ATX/AT main board is a high-
performance computer mainboard based on VIA
®
VT82C694X
chipset. The ROCKY-3742EVFG is designed for Intel
®
Pentium
®
III (FC-PGA) processor for cost-effective server
markets.
The Apollo Pro133A (VT82C694X) is a Socket-370 system
logic north bridge with the addition of 133 MHz capability for
both the CPU and SDRAM interfaces. Apollo Pro133A may be
used to implement both desktop and notebook personal
computer systems from 66MHz to 133MHz based on Socket-
370 (Pentium
®
III processor). The primary features of the
Apollo Pro133A-North Bridge are: Slot-1 or Socket-370 CPU
(Front Side Bus) Interface (66 / 100 / 133MHz), DRAM
Memory Interface (66 / 100 / 133MHz), AGP Bus Interface
(66MHz), PCI Bus Interface (33MHz), Mobile Power
Management.
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.
1.1 Specifications :
•
CPU
: Dual Pentium® III(FC-PGA), Celeron(PPGA) , Unique
Celeron™ ,
VIA Cyrix®
Ⅲ
•
FSB
: Support 66/100/133 MHz(Auto Detect)
•
Bus
: PICMG Bus(Support PCI Master x 4)
6
•
DMA channels
: 7
•
Interrupt levels
: 15
•
Chipset
: VIA VTVT82C686B
•
RAM memory
: Four 168-pin DIMM sockets support
SDRAM/VCM module. The max memory is up to 1.5GB(PC133)
or 2GB(PC100).
Support ECC(1-bit Error Code Correct) function
•
Ultra ATA/33/66/100
IDE Interface
: Two PCI Enhance IDE hard
drives. The south bridge VT82c686B supports Ultra
ATA/33/66/100 IDE interface.
•
Floppy disk drive interface
: Single 2.88 MB, 1.44MB, 1.2MB,
720KB, or 360KB floppy disk drive.
•
Two high speed Series ports
: NS16C550 compatible UARTs
•
Bi-directional Parallel Port
: IEEE1284 compatible
•
Built-in VT82C686B to monitor power supply voltage and fan
speed status.
•
IrDA port : Support Serial Infrared(SIR) and Amplitude Shift
Keyed IR(ASKIR) interface.
•
USB port : Support two USB ports for future expansion.
•
AC’97 Codec :
Support two channel Left/Right Line IN/OUT,
MIC IN, CD IN, and PC beep sound for buzzer.
•
VGA Controller :
SIS 6326 VGA controller, 4MB main memory .
Screen Resolution : up to 1600x1200 in 8-bit Color at 85Hz
refresh.
•
Intel 82559 Fast Ethernet Multifunction PCI Controller :
IEEE 802.3u Auto-Negotiation support for 10BASE-T/100BASE-
TX standard. Fast back-to-back transmission support with
minimum interframe spacing. Connected to your LAN through
RJ45 connector.
•
NS83820 Gigabit LAN PCI Controller (ROCKY-3742EVFG
Only):
DP83820 is an up to gigabit of Ethernet Controller for the
PCI bus. Can support full duplex 10/100/1000Mb/s transmission
and reception.
Connected to your LAN through RJ45 connector.
