Frame Rate Calculation; Table 11-3: Example Frame Rates - Epson S1D13504 Technical Manual

Page 120

11.2 Frame Rate Calculation

1
DRAM Type
(Speed Grade)
• Single Panel.
• CRT.
• Dual Monochrome/Color Panel
with Half Frame Buffer Disabled.
• Simultaneous CRT + Single Panel.
50ns • Simultaneous CRT + Dual
Monochrome/Color Panel with Half
EDO-DRAM
Frame Buffer Disabled.
MClk = 40MHz
N = 4
RC
N = 1.5
RP
N = 2
RCD
• Dual Color with Half Frame Buffer
Enabled.
• Dual Mono with Half Frame Buffer
Enabled.
S1D13504
X19A-A-002-18
The frame rate is calculated using the following formula:
FrameRate = ---------------------------------------------------------------------------------------- -
HDP + HNDP
Where:
VDP = Vertical Display Period
VNDP = Vertical Non-Display Period
HDP = Horizontal Display Period
HNDP = Horizontal Non-Display Period
Ts = Pixel Clock

Table 11-3: Example Frame Rates

Display
5
5
PCLK
max
VDP + VNDP
= REG[09h] bits [1:0], REG[08h] bits [7:0] + 1
= REG[0Ah] bits [5:0] + 1
= in table below
= ((REG[04h] bits [6:0]) + 1) * 8Ts
= ((REG[05h] bits [4:0]) + 1) * 8Ts
= given in table below
= PCLK
Color
Resolution Depth
(bpp)
1/2/4/8
2
800x600
16
1/2/4/8
640x480
16
1/2/4/8
640x240
16
1/2/4/8
480x320
16
1/2/4/8
320x240
16
1/2/4/8
2,3
800x600
16
1/2/4/8
640x480
16
Epson Research and Development
Vancouver Design Center
Maximum Maximum Frame
Minimum
Pixel
Panel
Clock
HNDP(T )
Panel
s
(MHz)
32
56
32
56
32
40
56
32
56
32
56
20 32
13.3 32
20 32
13.3 32
Hardware Functional Specification
Issue Date: 01/01/30
Rate (Hz)
4
CRT
80 60
78 60
123 85
119 85
247 -
242 -
243 -
232 -
471 -
441 -
80 -
53 -
123 -
82 -