Initialization - Epson S1D13505F00A Technical Manual

2: INITIALIZATION

2 I
NITIALIZATION
S1D13505 initialization can be broken into three steps. First, enable the S1D13505 controller (if
necessary identify the specific controller). Next, set all the registers to their initial values. Finally,
program the Look-Up Table (LUT) with color values. This section does not deal with programming
the LUT, see Section 4 of this manual for LUT programming details.
Note: When using an ISA evaluation board in a PC (i.e. S5U13505P00C), there are two additional steps
that must be carried out before initialization. First, confirm that 16-bit mode is enabled by writing to
address F80000h. Then, if hardware suspend is enabled, disable suspend mode by writing to
F00000h. For further information on ISA evaluation boards refer to the S5U13505P00C Rev. 1.0 ISA
Bus Evaluation Board User Manual .
The following table represents the sequence and values written to the S1D13505 registers to control
a configuration with these specifications:
• 640x480 color dual passive format 1 LCD @ 75Hz.
• 8-bit data interface.
• 8 bit-per-pixel (bpp) - 256 colors.
• 31.5 MHz input clock.
• 50 ns EDO-DRAM, 2 CAS, 4 ms refresh, CAS before RAS.
2-2
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EPSON
S1D13505 PROGRAMMING NOTES
AND EXAMPLES (X23A-G-003-05)