SED1354 Datasheet, PDF (289/472 Pages) Epson Company – Color Graphics LCD/CRT Controller

Epson Research and Development
Vancouver Design Center
Page 15
6.6 Monochrome LCD Panel Support
The SED1354 supports 4 and 8-bit dual and single, monochrome passive LCD panels. All necessary
signals are provided on the 40-pin ribbon cable header J6. The interface signals are alternated with
grounds on the cable to reduce cross-talk and noise-related problems.
Refer to Table 3-1 “LCD Signal Connector (J6),” on page 9 for connection information.
6.7 Color Passive LCD Panel Support
The SED1354 directly supports 4/8/16-bit dual and single, color passive LCD panels. All the
necessary signals are provided on the 40-pin ribbon cable header J6. The interface signals are alter-
nated with grounds on the cable to reduce cross-talk and noise-related problems.
The SED1354 cannot support 12 or 18-bit TFT panels when CRT is enabled. FPDAT [15:8] is used
for RAMDAC data and is not available for LCD. Refer to the SED1354 Hardware Functional Speci-
fication, document number X19A-A-002-xx for details.
Refer to Table 3-1 “LCD Signal Connector (J6),” on page 9 for connection information.
6.8 Color TFT LCD Panel Support
The SED1354 supports 9/12/18-bit active matrix color TFT panels. All the necessary signals can
also be found on the 40-pin LCD connector J6. The interface signals are alternated with grounds on
the cable to reduce cross-talk and noise-related problems.
When supporting an 18-bit TFT panel, the SED1354 can display 64K of a possible 262K colors. A
maximum 16 of the possible 18-bits of LCD data is available from the SED1354. Refer to the
SED1354 Hardware Functional Specification, document number X19A-A-002-xx for details.
The SED1354 cannot support 12 or 18-bit TFT panels when CRT is enabled. FPDAT [15:8] is used
for RAMDAC data and is not available for LCD. Refer to the SED1354 Hardware Functional Speci-
fication, document number X19A-A-002-xx for details.
Refer to Table 3-1 “LCD Signal Connector (J6),” on page 9 for connection information.
6.9 External CMOS RAMDAC Support
This evaluation board design provides CRT support with the addition of an external RAMDAC
(BrookTree BT481A or equivalent). The presence of an external RAMDAC/CRT can be determined
by software once the SED1354 is properly initialized after power-up.
The BT481A RAMDAC is provided on the board to fully test all of the CRT display modes
available. Refer to the section “Display Support” of the SED1354 Hardware Functional Specifi-
cation, document number X19A-A-002-xx for details.
The overlay function and sprite/hardware cursor display features are not supported.
SDU1354B0C Rev.1.0 ISA Bus Evaluation Board User Manual
Issue Date: 98/10/29
SED1354
X19A-G-004-05