Epson Research and Development
Page 143
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LCD Display Start Address Register 0
REG[042h]
RW
LCD Display LCD Display LCD Display LCD Display LCD Display LCD Display LCD Display LCD Display
Start Address Start Address Start Address Start Address Start Address Start Address Start Address Start Address
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LCD Display Start Address Register 1
REG[043h]
RW
LCD Display LCD Display LCD Display LCD Display LCD Display LCD Display LCD Display LCD Display
Start Address Start Address Start Address Start Address Start Address Start Address Start Address Start Address
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
LCD Display Start Address Register 2
REG[044h]
RW
LCD Display LCD Display LCD Display LCD Display
Start Address Start Address Start Address Start Address
n/a
n/a
n/a
n/a
Bit 19
Bit 18
Bit 17
Bit 16
REG[042h] bits 7-0
REG[043h] bits 7-0
LCD Display Start Address Bits [19:0]
This register forms the 20-bit address for the starting word of the LCD image in the dis-
play buffer.
REG[044h] bits 3-0
Note that this is a word address. An entry of 00000h into these registers represents the
first word of display memory, an entry of 00001h represents the second word of the dis-
play memory, and so on.
LCD Memory Address Offset Register 0
REG[046h]
RW
LCD Memory LCD Memory LCD Memory LCD Memory LCD Memory LCD Memory LCD Memory LCD Memory
Address
Address
Address
Address
Address
Address
Address
Address
Offset Bit 7
Offset Bit 6
Offset Bit 5
Offset Bit 4
Offset Bit 3
Offset Bit 2
Offset Bit 1
Offset Bit 0
LCD Memory Address Offset Register 1
REG[047h]
RW
LCD Memory LCD Memory LCD Memory
n/a
n/a
n/a
n/a
n/a
Address
Address
Address
Offset Bit 10
Offset Bit 9
Offset Bit 8
REG[046h] bits 7-0
REG[047h] bits 2-0
LCD Memory Address Offset Bits [10:0]
These bits are the LCD display’s 11-bit address offset from the starting word of line “n” to
the starting word of line “n + 1”.
A virtual image can be formed by setting this register to a value greater than the width of
the display. The displayed image is a window into the larger virtual image.
Hardware Functional Specification
Issue Date: 01/02/06
S1D13506
X25B-A-001-10
EPSON [ EPSON COMPANY ]
