Digi NS9750 - Manual (Page 846)

L C D t i m i n g
8 2 2 N S 9 7 5 0 H a r d w a r e R e f e r e n c e
LCD timing
Note:
All AC characteristics are measured with 10pF, unless otherwise noted.
Table 474 describes the values shown in the LCD timing diagrams (Figure 129 through
Figure 135).
Parm Description Register Value Units
L1 Horizontal front porch blanking LCDTiming0 HFP+1 CLCP periods
L2 Horizontal sync width LCDTiming0 HSW+1 CLCP periods
L3 Horizontal period N/A L1+L2+L15+L4 CLCP periods
L4 Horizontal backporch LCDTiming0 HBP+1 CLCP periods
L5 TFT active line LCDTiming0 16*(PPL+1)
(see note 3) CLCP periods
L6 LCD panel clock frequency LCDTiming1 For BCD=0:
CLCDCLK/(PCD+2)
For BCD=1:
CLCDCLK (see note 1)
MHz
L7 TFT vertical sync width LCDTiming1 VSW+1 H lines
L8 TFT vertical lines/frame N/A L7+L9+L10+L11 H lines
L9 TFT vertical back porch LCDTiming1 VBP H lines
L10 TFT vertical front porch LCDTiming1 VFP H lines
L11 Active lines/frame LCDTiming1 LPP+1 H lines
L12 STN HSYNC inactive to
VSYNC active LCDTiming0 HBP+1 CLCP periods
L13 STN vertical sync width N/A 1 H lines
L14 STN vertical lines/frame N/A L11+L16 H lines
L15 STN active line LCDTiming2 CPL+1 (see note 4) CLCP periods
L16 STN vertical blanking LCDTiming1 VSW+VFP+VBP+1 H lines
L17 STN CLCP inactive to HSYNC
active LCDTiming0 HFP+1.5 CLCP periods
Table 474: LCD timing parameters