em65570sagh ELAN Microelectronics Corp, em65570sagh Datasheet - Page 63

• Manufacturer Part Number: em65570sagh
• Description: 68com/98seg 65k Color Stn Lcd Drivers
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.0) 04.18.2006
(This specification is subject to change without further notice)
8.2.6 Increment Control Register Set
(At the time of reset: {WIN, AIM, AYI, AXI}=0H, read address: AH)
This register controls the increment mode and window function when accessing to
display RAM. The increment operation of AX and AY register can control by AIM, AYI
and AXI registers setting and every write access or every read access to display RAM.
The AY register directly connects to display RAM as Y address. The AX register
connect to address converter, and that output to display RAM as X address in the auto
increment mode, AX and AY register are increment, not directly increment X and Y
address.
In setting to this control register, the increment operation of address can be made
without setting successive addresses for writing data or for reading data to display
RAM from MPU.
The WIN register used for window function control.
WIN=”0”: Normal RAM access
WIN=”1”: Window function access
In case of using window function access, should be set following register before access
to RAM.
WIN=”1”, AXI=”1”, AYI=”1”
X Address, Y Address, Window X End Address, Window Y End Address
Moreover, should be keep following address condition.
Window end X address
Window end Y address
The increment control of X and Y addresses by AIM, AYI and AXI registers are as
follows.
D7
1
AIM
0
1
D6
0
REF
D5
1
0
0
1
1
When writing to Display RAM or reading from Display RAM
This is effective when access to successive address area
Only when writing to Display RAM
This is effective the case of “Read Modify Write
D4
0
SWAP
0
1
0
1
WIN AIM AYI AXI
D3
D2
Window start X address
Window start Y address
Normal display
Exchange display data of R and B.
Reverse display,
Exchange display data of R and B
Reverse display
D1
Effect on the Panel
Address Increment Timing
D0
68COM/98SEG 65K Color STN LCD Drivers
CSB
0
RS
1
RDB WRB RE2 RE1 RE0
1
0
0
EM65570S
0
x 57
0