Artesyn NITX-300-ET-DVI Installation and Use (August 2014) - Manual (Page 54)

Functional Description
NITX-300-ET-DVI Installation and Use (6806800N97B) 54
4.13 Video Interface
TNC supports two types of display output: SDVO and LVDS. For SDVO application, NITX-300-
ET-DVI uses a transfer solution CH7307C to provide the SDVO to DVI usage.
The LVDS interface supports pixel color depths of 18- and 24-bits and a maximum resolution of
up to 1280x768 at 60Hz. Minimum pixel clock is 19.75MHz while the maximum pixel clock rate
is up to 80MHz.
The standard BIOS supports SDVO out and LVDS output.
4.14 Audio Interface
TNC can support a high definition audio interface. An audio codec is applied to the HDA link. A
header P12 for the front panel audio output is provided. See
Table 3-8 on page 38 .
4.15 BIOS Device
The SPI flash is used as a BIOS device. The SPI BIOS chip capacity is 4 MB.
NITX-300-ET-DVI also provides an SF100 onboard SPI flash program function. When this
feature is used, the input power should be cut fully to avoid damage to the chipset. See
Table
3-6 on page HIDDEN .
4.16 GPIO Configuration
There are three parts of GPIO in NITX-300-ET-DVI, one is a user define GPIO which is generated
from PCA9557PW. The second part GPIO is coming from the TNC and the 3rd part GPIO is
derived from Topcliff.
The PCA9557PW provides eight user defined GPIOs, 4 GPI and 4 GPO with 5V referenced on
one internal header P4. See
Table 3-14 on page 41 .
Table 4-3 TNC GPIO Definition
5 Core-well GPIOs (turned off during sleep mode)
Name Function