FPD85310 datasheet(25/29 Pages) NSC

номер детали	FPD85310

подробное описание детали	Panel Timing Controller

PDF	29 Pages

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производитель	NSC [National Semiconductor (TI)]

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APPENDIX A: GPO Programming Examples (Continued)

GPO Programming Example #1:

Generate a control signal which transitions high at the end of

each line, has a pulsewidth of 3 µs, and remains low during

the vertical blanking period. This control is used for the latch

pulse to the column drivers.

Horizontal time (clocks/line) = 1300 dot clocks

Vertical period (lines/frame) = 850 lines

Vertical control is active beginning at line 1 and remains ac-

tive for 768 lines.

GPO Vertical Start Register = 1

GPO Vertical Duration Register = 768d (300h)

Positive pulse goes high each line at output clock 512 corre-

sponding to when the last two pixels are output on OR, OG,

OB, ER, EG, EB. Pulse remains high for 98 output clocks (98

x 30.8 ns/clock = 3.02 µs). (Dual Bus output clock =

32.5 MHz for 65 MHz XGA video, 1024 pixels/line, 768 dis-

played lines/frame).

Note: 6 counts are added to the output start # because the GPO pixel count

begins 6 clocks prior to the output data.

GPO Horizontal Start Register = 518d (206h)

GPO Horizontal Duration Register = 98d (62h)

The control pulses are positive (bit [0] = 0) and the toggle cir-

cuitry is disabled (bit1 [1] = 0).

GPO Control Register = 0

DS101086-23

FPD85310 датащи(PDF) 25 Page - National Semiconductor (TI)