EM65570
68COM/ 98SEG 65K Color STN LCD Driver
8.2.32 Scroll Start Address
D7 D6 D5 D4 D3
D2
D1
D0
CSB RS RDB WRB RE2 RE1 RE0
0
1
1
0
SAY3 SAY2 SAY1 SAY0
0
1
1
0
1
0
1
(At the time of reset: {SAY3, SAY2, SAY1, SAY0} = 0H, read address: 6H)
D7 D6 D5 D4 D3 D2
D1
D0
CSB RS RDB WRB RE2 RE1 RE0
0
1
1
1
SAY6 SAY5 SAY4
0
1
1
0
1
0
1
*
* Don’t Care
(At the time of reset: {SAY6, SAY5, SAY4} = 0H, read address: 7H)
Set the starting address of the area scrolling and then execute the area scroll
operation. The scroll start address must be in the scrolling area.
Scroll top address <= Scroll start address <= Scroll bottom address
NOTE
To avoid any errors when setting the Scroll start address registers, set SAY[6:4] (Bank
5[7H]) first, then set SAY[3:0] (Bank 5[6H].
8.2.33 Scroll Mode Select
D7 D6 D5 D4 D3 D2 D1 D0
SM1 SM0
CSB RS RDB WRB RE2 RE1 RE0
1
0
0
0
0
1
1
0
1
0
1
*
*
* Don’t Care
(At the time of reset: {SM1, SM0} = 0H, read address: 8H)
SM1
SM0
Type of Area Scroll
Center screen scroll
Top screen scroll
0
0
1
1
0
1
0
1
Bottom screen scroll
Whole screen scroll
SM[1:0]=00
SM[1:0]=01
SM[1:0]=10
SM[1:0]=11
Center screen
Top screen
Bottom screen
Whole screen
: Fixed area
: Scroll area
Figure 8-6 Types of Area Scroll Modes
Product Specification (V1.0) 09.05.2005
(This specification is subject to change without further notice)
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ELAN [ ELAN MICROELECTRONICS CORP ]
