EM65101
128COM/160SEG 16 Gray Scale Level LCD Driver
REF: When MPU accesses display RAM, address X and data are switched. The
following figure shows the action of the REF.
SEG0
SEG1
SEG2
SEG3
SEG156 SEG157 SEG158 SEG159
4EH 4FH
1 0 1 1 0 0 1 1 1 1 1 0 0 1 1 1
00H
01H
1 1 0 0 0 1 0 1 1 0 1 0 0 0 0 1
10 1 1 01 01 1 1 01 01 0 1 1 10 0 1 1
01 0 01 10 10 0 10 01 01 1 0 10 10 1 0 01
Figure 8-1 REF Register Function
8.2.6 Increment Control Register Set
D7 D6 D5 D4 D3 D2 D1 D0
CSB RS RDB WRB RE2 RE1 RE0
0
1
1
1
WIN AIM AYI AXI
0
1
1
0
0
0
0
(At the tine of reset: {WIN, AIM, AYI, AXI} = 0H, read address: 7H)
This register controls the increment mode and the window function when accessing
display RAM. The increment operation of the AXI and AYI registers are controlled by
the settings at the AIM, AYI, and AXI registers, and every write or read access to
display RAM. The AYI register directly connects to display RAM as Y address. The
AXI register connects to the address converter, and then outputs to display RAM as X
address in auto increment mode. The AXI and AYI registers are incremented, but do
not directly increment the X and Y addresses.
When setting this control register, the address increment operation can be made
without setting successive addresses for writing or reading data to display RAM from
MPU.
The WIN register is used for window function control.
WIN=”0”: Normal RAM access
WIN=”1”: Window function access
When using the window function to access RAM, be sure to set the following register
first.
WIN=”1,” AXI=”1,” AYI=”1”
X Address, Y Address, Window X End Address, Window Y End Address
In addition, the following condition must be met.
Window end X address ≧ Window start X address
Window end Y address ≧ Window start Y address
Product Specification (V0.4) 08.15.2005
• 47
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
