HD66781 Datasheet, PDF (54/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
Frame Cycle Control (R00Dh)
R/W RS
W1
IB15 IB14 IB13 IB12 IB11 IB10 IB9 IB8 IB7 IB6 IB5 IB4 IB3 IB2 IB1 IB0
00
00
0 0 DIVI1 DIVI0 0 0 0 ^{RTNI RTNI RTNI RTNI RTNI}
4 32 10
RTNI[4:0]: Set IH (line) period.
DIVI[1:0]: Set the division ratio of clocks for internal operations (DIV1-0). The internal operations are
executed by the clocks, the frequency of which is divided according to the DIV1-0 setting. When changing
the number of raster-rows to drive, adjust the frame frequency too. For details, see “Frame Frequency
Adjustment Function”(p.178).
Table 32
RTNI[3:0]
5’h00
:
5’h0F
5’h10
5’h11
5’h12
5’h13
5’h14
5’h15
5’h16
5’h17
5’h18
5’h19
5’h1A
5’h1B
5’h1C
5’h1D
5’h1E
5’h1F
clocks per line
Setting disabled
:
Setting disabled
16 clocks
17 clocks
18 clocks
19 clocks
20 clocks
21 clocks
22 clocks
23 clocks
24 clocks
25 clocks
26 clocks
27 clocks
28 clocks
29 clocks
30 clocks
31 clocks
DIVI[1:0]
division ratio
internal operation clock frequency
2’h0
1/1
2’h1
1/2
2’h2
1/4
2’h3
1/8
fosc / 1
fosc / 2
fosc / 4
fosc / 8
Note 1) fosc : R-C oscillation frequency
Formula for frame frequency
frame frequency =
fosc
[Hz]
Number of clock per line x division ratio x (Line +FP+BP)
fosc : R-C oscillation frequency
Line : Number of drive raster-rows (NL bit)
division ration : DIVI bit
clocks per line : RTNI bit
Rev.0.5, July.31.2003, page 54 of 196