Specifications

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EPC-30 Hardware Reference
Page 38
The 6245 is also capable of Standby and Suspend modes for reduced power
consumption. The hardware suspend function of the VGA controller is
supported by connecting the 386EX port bit P2.4 to the VGA controller
SUSPEND input. Refer to the CL-GD6245 datasheet and applications notes
for details of the suspend function’s operation.
Appendix C contains information on how to install the Cirrus Logic utility
software. Appendix E contains cabling information for the flat panel
connector. Pinouts are described in Chapter 4, Connectors.
Note that the system BIOS does not support both the VGA connector and the
flat panel connector in use at the same time. The flat panel is only supported
when the VGA connector is not in use. However, software utilities available
from Cirrus Logic can drive a CRT and a flat panel at the same time.
The VGA controller provides the following set of output connectors:
1. A standard 15-pin high-density D-sub connector used to connect to
a standard VGA monitor.
2. A 10-pin header carrying standard VGA signals.
3. A 50-pin 2.0mm pitch shrouded header to provide connection for
flat panel displays.
The ROM BIOS code for the VGA controller is included in the same BIOS
flash EPROM as the main system BIOS. Since it is contained in a boot-
block flash device, it is possible to upgrade the video BIOS to include
different flat-panel displays after the board has left the factory. At power-up,
a set of jumpers is read by the VGA controller to select which of the options
is used.
The BIOS includes space for the different types of panels to be supported. At
release, only one panel has been validated, the Sharp LM64P89
(Monochrome), but others are expected. Check the RadiSys Web page for
more information, or contact RadiSys Technical Support.
No circuitry is included on the EPC-30 for LCD contrast or backlight
control.
Flash Disk Subsystem
The EPC-30 implements a Resident Flash Array (RFA) as a fully bootable
read/write flash file system. The RFA site is compatible with 2MB (28F016)
and 4MB (28F032) devices. A second pad pattern at the same site accepts
1MB (28F008) devices.
The interface to the RFA may be accomplished one of two ways, depending
on the setup menu settings.