DFI QB702-B - Manual (Page 7)

www.dfi .com Chapter 1 Introduction
7
Features
• DDR2
DDR2 is a higher performance DDR technology whose data transfer rate delivers bandwidth
of 4.3 GB per second and beyond. That is twice the speed of the conventional DDR without
increasing its power consumption. DDR2 SDRAM modules work at 1.8V supply compared to
2.6V memory voltage for DDR modules. DDR2 also incorporates new innovations such as the
On-Die Termination (ODT) as well as larger 4-bit pre-fetch against DDR which fetches 2 bits
per clock cycle.
• Graphics
The integrated Intel® HD graphics engine delivers an excellent blend of graphics performance
and features to meet business needs. It provides excellent video and 3D graphics with out-
standing graphics responsiveness. These enhancements deliver the performance and compat-
ibility needed for today’s and tomorrow’s business applications. Supports LVDS and SDVO
display outputs.
• Serial ATA
Serial ATA is a storage interface that is compliant with SATA 2.0a specification. With speed of
up to 3Gb/s (SATA 2.0), it improves hard drive performance faster than the standard parallel
ATA whose data transfer rate is 100MB/s. The bandwidth of the SATA 3.0 will be limited by
carrier board design.
• Gigabit LAN
The Micrel KSZ9021RNI Ethernet Phy controller supports up to 1Gbps data transmission.
• Watchdog Timer
The Watchdog Timer function allows your application to regularly “clear” the system at the set
time interval. If the system hangs or fails to function, it will reset at the set time interval so
that your system will continue to operate.
Chapter 1
Specification Comparison Table
The table below shows the Qseven standard specifications and the corresponding
specifications supported on the QB702-B module.
System I/O Interface
ARM/RISC Based
Minimum Configuration X86 Based Minimum
Configuration Maximum
Configuration DFI QB702
Configuration
PCI Express Lanes 0 1 (x1 link) 4 3
Serial ATA channels 0 0 2 2
USB 2.0 ports 3 4 8 8
LVDS channels 0 0 Dual Channel 24bits Single Channel 24bits
DisplayPort, TMDS, 0 0 1 1
High Definition
Audio/AC'97
0 0 1 1
Ethernet 10/100
Mbit/Gigabit
0 0 1 (Gigabit Ethernet) 1
ExpressCard support 0 0 2 2
Low Pin Count bus 0 0 1 1
Secure Digital I/O 8-bit
for SD/MMC cards
0 0 1 1
System Management 0 1 1 1
I 2 C Bus 1 1 1 1
SPI Bus 0 0 1 1
CAN Bus 0 0 1 1
Watchdog Trigger 1 1 1 1
Power Button 1 1 1 1
Power Good 1 1 1 1
Reset Button 1 1 1 1
LID Button 0 0 1 1
Sleep Button 0 0 1 1
Suspend To RAM (S3
mode)
0 0 1 1
Wake 0 0 1 1
Battery low alarm 0 0 1 1
Thermal control 0 0 1 1
FAN control 0 0 1 1