VAR-320SBC Reference Guide
Copyright © 2008 Variscite
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3.2. Memory
3.2.1.
266MHZ 32bit DDR SDRAM
The VAR-320SBC supports up to 128MB of DDR SDRAM with clock rate of 266 MHz.
The DDR SDRAM uses a double-data-rate architecture to achieve high-speed operation.
3.2.2. NAND
flash
The VAR-320SBC supports NAND flashes up to the size of 8Gbit.
The NAND flash is used for Flash Disk purposes, operating system’s run-time-image and the
Bootloader (Boot from NAND).
The NAND flash can be Write-Protected with a dedicated WP# line.
3.3. Power Management IC, National LP3972
The PMIC uses a single 3.3-4.8V DC directly from battery or a regulated source. The PMIC
provides stable, low-noise supplies for all core voltage domains, with additional regulators for
supplying peripheral ICs. All supplies are fed by high-performance, low-dropout (LDO) voltage
regulators and offering very low quiescent current consumption and high power supply rejection.
Three high-efficiency DC-DC buck converters provide high-current, low-voltage supplies to the
processor core and memory. The main converter features Dynamic Voltage Management (DVM),
with programmable voltage and slew rate control.
3.4. Wi2Wi WS2W0001 WIFI module
VAR-320SBC module includes a high-quality built-in 802.11 b/g WLAN module connected to the
SDIO interface.
Chipset: Marvell 88W8686-B1.
Drivers for WinCE™, Linux are available.
3.5. Davicom® DM9000BEthernet controller
High-Performance Single-Chip 10/100 Ethernet controller with HP auto-MDIX and industrial
temperature support