Page 70
Epson Research and Development
Vancouver Design Center
S1D13704
Hardware Functional Specification
X26A-A-001-04
Issue Date: 01/02/08
9 Frame Rate Calculation
The following formulae are used to calculate the display frame rate.
TFT/D-TFD and Passive Single-Panel modes
Where: f
PCLK
= PClk frequency (Hz)
HDP
= Horizontal Display Period = ((REG[04h] bits 6-0) + 1) x 8 Pixels
HNDP = Horizontal Non-Display Period = ((REG[08h] bits 4-0) + 4) x 8 Pixels
VDP
= Vertical Display Period = ((REG[06h] bits 1-0, REG[05h] bits 7-0) + 1) Lines
VNDP = Vertical Non-Display Period = (REG[0Ah] bits 5-0) Lines
Passive Dual-Panel mode
Where:
f
PCLK
= PClk frequency (Hz)
HDP
= Horizontal Display Period = ((REG[04h] bits 6-0) + 1) x 8 Pixels
HNDP = Horizontal Non-Display Period = ((REG[08h] bits 4-0) + 4) x 8 Pixels
VDP
= Vertical Display Period = ((REG[06h] bits 1-0, REG[05h] bits 7-0) + 1) Lines
VNDP = Vertical Non-Display Period = (REG[0Ah] bits 5-0) Lines
FrameRate
f
PC LK
HDP
HNDP
+
(
)
VDP
VNDP
+
(
)
×
-----------------------------------------------------------------------------------------
=
FrameRate
f
PC LK
2
HDP
HNDP
+
(
)
×
VDP
2
------------
VNDP
+
×
---------------------------------------------------------------------------------------------------
=
*