S1D13700F01 Epson Electronics America, Inc., S1D13700F01 Datasheet - Page 102

• Manufacturer Part Number: S1D13700F01
• Description: Embedded Memory Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 102
15 Application Notes
15.1 Register Initialization/Initialization Parameters
15.1.1 SYSTEM SET Command and Parameters
S1D13700F01
X42A-A-002-04
Square brackets around a parameter name indicate the number represented by the
parameter, rather than the value written to the parameter register. For example, [FX] = FX
+ 1.
• FX
• C/R
• TC/R
• L/F
• f
For 1 Bpp and [FX] ≥ 8:
f
where
A = [TC/R] - [C/R]
B = RNDDN([C/R] x [FX] ÷ 8)
C = 16 x RNDUP(B ÷ 16)
D = C - B
E = (B x 16 ÷ [FX] + D) ÷ 2
F = A + E
For 1 Bpp and [FX] < 8:
SYSCLK
The horizontal character field size is determined from the horizontal display size in
pixels [VD] and the number of characters per line [VC].
SYSCLK
[VD] ÷ [VC] = [FX]
C/R can be determined from VC and FX.
[C/R] = RNDUP ([FX] ÷ 8) [VC]
Where RNDUP(x) denotes rounded up to the next highest integer. [C/R] is the number
of bytes per line, not the number of characters.
TC/R must satisfy the condition [TC/R] ≥ [C/R] + 2.
The number of lines per frame is determined by the display vertical resolution.
Once TC/R has been set, the frame frequency, f
have been set. Depending on number of gray shades (bpp) selected and the horizontal
character field size, [FX], the oscillator frequency f
lowing formula:
= 2 x [ClockDiv] x Ffr x [L/F] x F (Hz)
and f
FR
Revision 4.05
FR
, and lines per frame [L/F] will also
SYSCLK
Epson Research and Development
Hardware Functional Specification
is given by one of the fol-
Vancouver Design Center
Issue Date: 2005/12/13