User`s manual

11: CLOCKING
1-92 EPSON S1D13504 SERIES HARDWARE FUNCTIONAL
SPECIFICATION (X19A-A-002-17)
11.2 Frame Rate Calculation
The frame rate is calculated with the following formula:
Where: VDP = Vertical Display Period = REG[09h] bits [1:0], REG[08h] bits [7:0] + 1
VNDP = Vertical Non-Display Period = REG[0Ah] bits [5:0] + 1
HDP = Horizontal Display Period = ((REG[04h] bits [6:0]) + 1) ∗ 8Ts
HNDP = Horizontal Non-Display Period = ((REG[05h] bits [4:0]) + 1) ∗ 8Ts
= given in table below
Ts = Pixel Clock = PCLK
Table 11-3 Example Frame Rates
DRAM Type
1
(Speed Grade)
Display Resolution
Color
Depth
(bpp)
Maximum
Pixel Clock
(MHz)
Minimum
Panel
HNDP(T
s)
Maximum Frame
Rate (Hz)
Panel
4
CRT
50ns
EDO-DRAM
MCLK = 40MHz
NRC = 4
NRP = 1.5
NRCD = 2
• Single Panel.
•CRT.
• Dual Monochrome/Color Panel
with Half Frame Buffer Disabled.
5
• Simultaneous CRT + Single Panel.
• Simultaneous CRT + Dual Mono-
chrome/Color Panel with Half
Frame Buffer Disabled.
5
800×600
2
1/2/4/8 40 32 80 60
16 56 78 60
640×480 1/2/4/8 32 123 85
16 56 119 85
640×240 1/2/4/8 32 247 -
16 56 242 -
480×320 1/2/4/8 32 243 -
16 56 232 -
320×240 1/2/4/8 32 471 -
16 56 441 -
• Dual Color with Half Frame
Buffer Enabled.
• Dual Mono with Half Frame
Buffer Enabled.
800×600
2,3
1/2/4/8 20 32 80 -
16 13.3 32 53 -
640×480 1/2/4/8 20 32 123 -
16 13.3 32 82 -
60ns
EDO-DRAM
MCLK = 33MHz
NRC = 4
NRP = 1.5
NRCD = 2
• Single Panel.
•CRT.
• Dual Mono/Color Panel with Half
Frame Buffer Disabled.
5
• Simultaneous CRT + Single Panel.
• Simultaneous CRT + Dual Mono/
Color Panel with Half Frame
Buffer Disabled.
5
800×600
2
1/2/4/8 33 32 66 55
16 56 65 55
640×480 1/2/4/8 32 101 78
16 56 98 78
640×240 1/2/4/8 32 203 -
16 56 200 -
480×320 1/2/4/8 32 200 -
16 56 196 -
320×240 1/2/4/8 32 388 -
16 56 380 -
• Dual Color with Half Frame
Buffer Enabled.
• Dual Mono with Half Frame
Buffer Enabled.
800×600
2,3
1/2/4/8 16.5 32 66 -
16 11 32 43 -
640×480 1/2/4/8 16.5 32 103 -
16 11 32 68 -
60ns
FPM-DRAM
MCLK = 25MHz
NRC = 4
NRP = 1.5
NRCD = 2
• Single Panel.
•CRT.
• Dual Mono/Color Panel with Half
Frame Buffer Disabled.
5
• Simultaneous CRT + Single Panel.
• Simultaneous CRT + Dual Mono/
Color Panel with Half Frame
Buffer Disabled.
5
800×600
2
1/2/4/8 25 32 50 -
16 56 48 -
640×480 1/2/4/8 32 77 60
16 56 75 60
640×240 1/2/4/8 32 142 -
16 56 136 -
480×320 1/2/4/8 32 152 -
16 56 145 -
320×240 1/2/4/8 32 294 -
16 56 280 -
• Dual Mono with Half Frame
Buffer Enabled.
800×600
2
1/2/4/8/16 12.5 32 50 -
640×480 1/2/4/8/16 12.5 32 77 -
640×400 1/2/4/8/16 12.5 32 92 -
• Dual Color with Half Frame
Buffer Enabled.
800×600
2,3
1/2/4/8 12.5 32 50 -
16 8.33 32 33 -
640×480 1/2/4/8 12.5 32 77 -
16 8.33 32 51 -
FrameRate
PCLKmax
HDP HNDP+()VDP VNDP+()×
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