sed1374 ETC-unknow, sed1374 Datasheet - Page 64

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sed1374

Manufacturer Part Number
sed1374
Description
Sed1374 Embedded Memory Color Lcd Controller
Manufacturer
ETC-unknow
Datasheet

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Page 56
bits 7-6
bit 5
SED1374
X26A-A-001-02
REG[02h] Mode Register 1
Address = FFE2h
Bit-Per-Pixel
Bit 1
Bit-Per-Pixel
Bit 0
Bit-Per-Pixel Bits [1:0]
These bits select the color or gray-shade depth (Display Mode).
High Performance (Landscape Modes Only)
When this bit = 0, the internal Memory clock (MCLK) is a divided-down version of the
Pixel clock (PCLK). The denominator is dependent on the bit-per-pixel mode - see the
table below.
When this bit = 1, MCLK is fixed to the same frequency as PCLK for all bit-per-pixel
modes. This provides a faster screen update performance in 1, 2, 4 bit-per-pixel modes, but
also increases power consumption. This bit can be set to 1 just before a major screen
update, then set back to 0 to save power after the update. This bit has no effect in Swivel-
View mode. Refer to REG[1Bh] SwivelView Mode Register on page 68 for SwivelView
mode clock selection.
High Performance
Color/Mono
REG[01h] bit 6
Performance
0
1
High
0
1
Bit-Per-Pixel Bit 1
Input Clock
REG[02h] bit 7
(CLKI/2)
Table 8-3: High Performance Selection
Table 8-2: Gray Shade/Color Mode Selection
divide
BPP Bit 1
0
1
0
1
X
0
1
Display Blank
Bit-Per-Pixel Bit 0
BPP Bit 0
REG[02h] bit 6
X
0
1
0
1
0
1
0
1
0
1
0
1
Repeat
Frame
MClk = PClk/8
MClk = PClk/4
MClk = PClk/2
MClk = PClk
16 Gray shade
2 Gray shade
4 Gray shade
Epson Research and Development
Display Modes
256 Colors
16 Colors
MClk = PClk
2 Colors
4 Colors
Hardware Functional Specification
Video Invert
Hardware
Enable
Display Mode
Vancouver Design Center
1 bit-per-pixel
2 bit-per-pixel
4 bit-per-pixel
8 bit-per-pixel
reserved
Issue Date: 99/04/29
Read/Write.
1 bit-per-pixel
2 bit-per-pixel
4 bit-per-pixel
1 bit-per-pixel
2 bit-per-pixel
4 bit-per-pixel
8 bit-per-pixel
Video Invert
Software

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