SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 262

• Manufacturer Part Number: SPC8104
• Description: VGA LCD CONTROLLER
• Manufacturer: S-MOS Systems

SDU8104B
Rev 1.0 ISA Bus Evaluation Board
SPC8104
0B
TFT Support
The SPC8104F0A also supports 9-, 12-, and 18-bit TFT panels for the purpose of testing only.
Support of the TFT panels allows for more complete testing of the SPC8104F0A. All the neces-
sary signals can be found on the 40-pin ribbon cable connector (J6) and pass through a 3 V to 5V
voltage translation circuitry. Note that support for TFT is done in gray shades only.
Refer to LCD Panel Configuration and LCD Signal Connector Pinouts above for your specific set-
tings
LCD Power Supply Control
A control signal is provided on the connector (J5 and J6), LCDPWR#. This signal is a low current
direct output from the SPC8104F0A and are intended to be used in-conjunction with external cir-
cuitry to provide higher current switching. It is used to control the -23v Power Supply (VLCD).
VGA BIOS Support
A 32K EPROM contains the VGA BIOS. Support logic consists of an Address Decoder (C000H-
C7FFH), and a Data Buffer operating from the ISA-Bus. With the BIOS installed the board will
operate as a stand-alone Video adapter.
Power Save Modes
The SPC8104F0A supports 3 Power Save Modes that can be activated via either hardware or
software. A utility program is supplied to control both these modes. Software control is performed
by directly writing the SPC8104F0A associated internal registers. The hardware control is per-
formed by input pins on the SPC8104F0A. These inputs are controlled with the on-board DIP-
SWITCH (SW-7 and SW-8).
EV1-10
412-1.0
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com