SED1374 Datasheet, PDF (135/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

Epson Research and Development
Vancouver Design Center
7.4 Registers
This section describes the registers used to set SwivelView mode operation.
Page 39
REG[0Ch] Screen 1 Start Word Address LSB
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
REG[0Dh] Screen 1 Start Word Address MSB
reserved
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
The start address registers must be set for SwivelView mode. In SwivelView mode the
offset contained in the start address points to a byte.
REG[1Ch] Line Byte Count Register
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
The line byte count register informs the SED1374 of the stride, in bytes, between two
consecutive lines of display in SwivelView mode. The Line Byte Count register only
affects SwivelView mode operation. The contents of this register are ignored when the
SED1374 is in landscape display mode.
REG[1Bh] SwivelView Mode Register
SwivelView SwivelView
SwivelView SwivelView
Mode Enable Mode Select
n/a
n/a
n/a
reserved
Mode Pixel Mode Pixel
Clock Select Clock Select
Bit 1
Bit 0
The SwivelView mode register contains several items for SwivelView mode support.
The first is the SwivelView Mode Enable bit. When this bit is “0” the SED1374 is in
landscape mode and the remainder of the settings in this register as well as the Line Byte
Count in REG[1Ch] are ignored. When this bit is a “1” SwivelView mode is enabled.
There are two SwivelView mode display schemes available. The SwivelView mode select
bit selects between the “Default Mode” and the "Alternate Mode”. The default mode offers
the lowest power consumption with some display mode limitations. The alternate mode
uses more power but offers greater display flexibility.
Programming Notes and Examples
Issue Date: 99/04/27
SED1374
X26A-G-002-02