Artesyn MITX-430/MITX-440-DVI-2E Installation and Use (August 2014) - Manual (Page 63)

Functional Description
MITX-430/MITX-440-DVI-2E Installation and Use (6806800K37D) 63
4.9 DVI Interface
The DVI is switched and derived from LVDS, so DVI and LVDS cannot be used at the same time.
For display combination, use VGA + LVDS or VGA + DVI. Select the combination in the BIOS.
4.10 BIOS Device
A 4MB SPI Flash is used as BIOS device.
4.11 SPI Flash
MITX-430/MITX-440-DVI-2E uses onboard 4MB SPI flash part to store the firmware including
the BIOS and GBE.
The SPI flash part type is AT25DF321A-SH-T from Atmel. The AT25DF321A-SH-T supports SPI,
and a high performance dual output SPI using four pins: serial clock, chipset select, serial data
I/O, and serial data out. SPI clock frequencies of up to 33MHz are supported.
4.12 GPIO Configuration
There are two GPIOs:
 User defined GPIO which is generated from PCA9557PW
 ICH8-M GPIO
4.12.1 User Defined GPIO
4 GPI, 4 GPO 5V referenced. The 4 GPOs are internally pulled up to 5V with 10K resistor. The 4
GPIs are internally pulled down to GND with 10K resistor. The GPIO is controlled through SMBus
and the state of GPO is not lost even in S3 and S5 sleep state.