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S1D13505 Hardware Functional Specification
X23A-A-001-14 Issue Date: 01/02/02
7.5 Display Interface7.5.1 4-Bit Single Monochrome Passive LCD Panel Timing

Figure 7-24: 4-Bit Single Monochrome Passive LCD Panel Timing

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

FPLINE
FPSHIFT
FPFRAME
FPLINE
MOD
MOD
* Diagram drawn with 2 FPLINE vertical blank period
Example timing for a 320x240 panel
UD[3:0]
UD2
UD1
UD0
UD3
VDP
LINE1 LINE2 LINE3 LINE4 LINE239 LINE240 LINE1 LINE2
1-2 1-6 1-318
1-3 1-7 1-319
1-4 1-8 1-320
1-1 1-5 1-317
VNDP
HDP HNDP