ST7669V
9.1.27 RLAR: Scroll Area (33h)
Command
A0
0
/RD /WR
D7
D6
D5
D4
D3
D2
D1
D0
Hex
SCRLAR
1
1
1
1
0
0
0
0
0
0
1
1
0
0
1
1
(33h)
1st parameter
2nd parameter
3rd parameter
1
TFA7 TFA6 TFA5 TFA4 TFA3 TFA2 TFA1 TFA0
VSA7 VSA6 VSA5 VSA4 VSA3 VSA2 VSA1 VSA0
BFA7 BFA6 BFA5 BFA4 BFA3 BFA2 BFA1 BFA0
-
-
-
1
1
Description
This command just defines the Vertical Scrolling Area of the display and not performs vertical scroll.
When MADCTL ML=0
The 1st parameter TFA [7:0] describes the Top Fixed Area (in No. of lines from Top of the Frame
Memory and Display).
The 2nd parameter VSA [7:0] describes the height of the Vertical Scrolling Area (in No. of lines of the
Frame Memory [not the display] from the Vertical Scrolling Start Address) The first line appears
immediately after the bottom most line of the Top Fixed Area.
The 3rd parameter BFA [7:0] describes the Bottom Fixed Area (in No. of lines from Bottom of the
Frame Memory and Display).
TFA, VSA and BFA refer to the Frame Memory Line Pointer.
Restriction
The condition is (TFA+VSA+BFA) = 162, otherwise Scrolling mode is undefined. In Vertical Scroll
Mode, MADCTL parameter MV should be set to ‘0’-this only affects the Frame Memory
Write.TFA[7:0], VSA[7:0] and BFA[7:0] are based on line unit.
TFA[7:0]= 00h, 01h, 02h, 03h, … , A1h
VSA[7:0]= 00h, 01h, 02h, 03h, … , A1h
BFA[7:0]= 00h, 01h, 02h, 03h, … , A1h
Register
Status
Availability
Yes
Availability
Normal Mode On, Idle Mode Off, Sleep Out
Normal Mode On, Idle Mode On, Sleep Out
Partial Mode On, Idle Mode Off, Sleep Out
Partial Mode On, Idle Mode On, Sleep Out
Sleep In
Yes
Yes
Yes
Yes
Ver 1.3
115/208
6/4/2008
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
