SED1374 Datasheet, PDF (74/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

Page 66
Epson Research and Development
Vancouver Design Center
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REG[16h] Look-Up Table Bank Select Register
Address = FFF6h
Red Bank
Red Bank
n/a
n/a
Select
Select
Bit 1
Bit 0
Green Bank
Select
Bit 1
Green Bank
Select
Bit 0
Blue Bank
Select
Bit 1
Read/Write
Blue Bank
Select
Bit 0
bits 7-6
bits 5-4
bits 3-2
bit 1-0
n/a
Red Bank Select Bits [1:0]
In 1 bit-per-pixel (bpp) color mode the lower 8 positions of the Red Look-Up Table is
arranged into four banks, each with two positions. These two bits select which bank is
used for display data.
In 2 bpp color mode the 16 position Red Look-Up Table is arranged into four banks, each
with four positions. These two bits select which bank is used for display data.
These bits have no effect in 4 bpp color/gray modes.
In 8 bpp color mode the 16 position, Red Look-Up Table is arranged into two banks, each
with eight positions. Red Bank Select bit 0 selects which bank is used for display data.
Green Bank Select Bits [1:0]
In 1 bit-per-pixel (bpp) color/gray mode the lower 8 positions of the Green Look-Up Table
is arranged into four banks, each with two positions. These two bits select which bank is
used for display data.
In 2 bpp color/gray mode, the 16 position Green Look-Up Table is arranged into four
banks, each with four positions. These two bits select which bank is used for display data.
These bits have no effect in 4 bpp color/gray modes.
In 8 bpp color mode, the 16 position Green Look-Up Table is arranged into two banks,
each with eight positions. Green Bank Select bit 0 selects which bank is used for display
data.
Blue Bank Select Bits [1:0]
In 1 bit-per-pixel (bpp) color mode the lower 8 positions of the Blue Look-Up Table is
arranged into four banks, each with two positions. These two bits select which bank is
used for display data.
In 2 bpp color mode, the 16 position Blue Look-Up Table is arranged into four banks, each
with four positions. These two bits select which bank is used for display data.
These bits have no effect in 4 bpp color/gray modes.
In 8 bpp color mode, the 16 position Blue Look-Up Table is arranged into four banks, each
with four positions. These two bits select which bank is used for display data.
SED1374
X26A-A-001-02
Hardware Functional Specification
Issue Date: 99/04/29