sed1374 ETC-unknow, sed1374 Datasheet - Page 66
sed1374
Manufacturer Part Number
sed1374
Description
Sed1374 Embedded Memory Color Lcd Controller
Manufacturer
ETC-unknow
Datasheet
1.SED1374.pdf
(420 pages)
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Page 58
bit 7
bit 3
bit 2
bits 1-0
SED1374
X26A-A-001-02
REG[03h] Mode Register 2
Address = FFE3h
Table Bypass
Look-Up
n/a
Look-Up Table Bypass
When the Look-Up Table Bypass bit = 0, the Green Look-Up Table is used for display
data output in gray shade modes. When this bit = 1, the Look-Up Table is bypassed for dis-
play data output in gray shade modes (for power save purposes). See “Look-Up Table
Architecture” on page 72.
There is no effect on changing this bit in color modes. In color display mode the Look-Up
Table cannot be bypassed.
LCDPWR Override
This bit is used to override the panel on/off sequencing logic. When this bit = 0, LCDPWR
and the panel interface signals are controlled by the sequencing logic. When this bit 1,
LCDPWR is forced to off and the panel interface signals are forced low immediately upon
entering power save mode. See Section 7.3.2, “Power Down/Up Timing” on page 36 for
further information.
Hardware Power Save Enable
When this bit = 1 GPIO0 is used as the Hardware Power Save input pin. When this bit = 0
GPIO0 operates normally.
Software Power Save Bits [1: 0]
These bits select the Power Save Mode as shown in the following table.
RESET#
State
0
1
1
1
1
Bit 1
Table 8-6: Software Power Save Mode Selection
0
0
1
1
n/a
Hardware Power
Save Enable
REG[03h] bit 2
Table 8-5: Hardware Power Save/GPIO0 Operation
X
0
0
0
1
Bit 0
0
1
0
1
n/a
GPIO0 Config
REG[18h] bit 0
Software Power Save
LCDPWR
Override
X
X
0
1
1
Normal Operation
reserved
reserved
Mode
reads pin status
Status/Control
Power Save
Hardware
REG[19h] bit 0
Enable
GPIO0
X
X
0
1
Epson Research and Development
Hardware Functional Specification
Power Save
Software
Bit 1
Hardware Power Save
Vancouver Design Center
GPIO0 Operation
GPIO0 Output = 0
GPIO0 Output = 1
Input (active high)
(high impedance)
GPIO0 Input
Issue Date: 99/04/29
Read/Write
Power Save
Software
Bit 0
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