S1D13505 Epson Electronics America, Inc., S1D13505 Datasheet - Page 147

• Manufacturer Part Number: S1D13505
• Description: LCD Controller
• Manufacturer: Epson Electronics America, Inc.

Epson Research and Development
Vancouver Design Center
14.2 Frame Rate Calculation
(Speed Grade)
Hardware Functional Specification
Issue Date: 01/02/02
MClk = 40MHz
DRAM Type
EDO-DRAM
N
N
N
50ns
RP
RCD
RC
= 1.5
= 4
= 2
1
• Single Panel.
• CRT.
• Dual Monochrome/Color Panel
• Simultaneous CRT + Single Panel.
• Simultaneous CRT + Dual
• Dual Color with Half Frame Buffer
• Dual Mono with Half Frame Buffer
with Half Frame Buffer Disabled.
Monochrome/Color Panel with Half
Frame Buffer Disabled.
Enabled.
Enabled.
The frame rate is calculated using the following formula:
Where:
FrameRate
Display
VDP
VNDP
HDP
HNDP
Ts
=
Table 14-3: Example Frame Rates with Ink Disabled
5
---------------------------------------------------------------------------------------- -
HDP
= Vertical Display Period
= Vertical Non-Display Period
= Horizontal Display Period
= Horizontal Non-Display Period
= Pixel Clock
+
HNDP
5
PCLK
Resolution
800x600
800x600
640x480
640x240
480x320
320x240
640x480
max
VDP
2,3
2
+
VNDP
Color Depth
1/2/4/8
1/2/4/8
1/2/4/8
1/2/4/8
1/2/4/8
1/2/4/8
1/2/4/8
15/16
15/16
(bpp)
15/16
15/16
15/16
15/16
15/16
6
6
= 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
Maximum
Clock
(MHz)
Pixel
13.3
13.3
40
20
20
HNDP(T
Minimum
Panel
32
56
32
56
32
56
32
56
32
56
32
32
32
32
s
)
Maximum Frame
Panel
123
119
247
242
243
232
471
441
123
80
78
80
53
82
Rate (Hz)
X23A-A-001-14
4
S1D13505
Page 141
CRT
60
60
85
85
-
-
-
-
-
-
-
-
-
-