Epson S1D13506 Technical Manual page 149

Epson Research and Development
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LCD Display Start Address Register 0
REG[042h]
LCD Display LCD Display
Start Address Start Address
Bit 7 Bit 6
LCD Display Start Address Register 1
REG[043h]
LCD Display LCD Display
Start Address Start Address
Bit 15 Bit 14
LCD Display Start Address Register 2
REG[044h]
n/a n/a
REG[042h] bits 7-0
REG[043h] bits 7-0
REG[044h] bits 3-0
LCD Memory Address Offset Register 0
REG[046h]
LCD Memory LCD Memory
Address Address
Offset Bit 7 Offset Bit 6
LCD Memory Address Offset Register 1
REG[047h]
n/a n/a
REG[046h] bits 7-0
REG[047h] bits 2-0
Hardware Functional Specification
Issue Date: 02/03/26
LCD Display LCD Display
Start Address Start Address
Bit 5 Bit 4
LCD Display LCD Display
Start Address Start Address
Bit 13 Bit 12
n/a n/a
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.
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 LCD Memory
Address Address
Offset Bit 5 Offset Bit 4
n/a n/a
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.
LCD Display LCD Display
Start Address Start Address
Bit 3 Bit 2
LCD Display LCD Display
Start Address Start Address
Bit 11 Bit 10
LCD Display LCD Display
Start Address Start Address
Bit 19 Bit 18
LCD Memory LCD Memory
Address Address
Offset Bit 3 Offset Bit 2
LCD Memory
n/a Address
Offset Bit 10
Page 143
RW
LCD Display LCD Display
Start Address Start Address
Bit 1 Bit 0
RW
LCD Display LCD Display
Start Address Start Address
Bit 9 Bit 8
RW
LCD Display LCD Display
Start Address Start Address
Bit 17 Bit 16
RW
LCD Memory LCD Memory
Address Address
Offset Bit 1 Offset Bit 0
RW
LCD Memory LCD Memory
Address Address
Offset Bit 9 Offset Bit 8
S1D13506
X25B-A-001-12