S1D13700F01 Epson Electronics America, Inc., S1D13700F01 Datasheet - Page 62

• Manufacturer Part Number: S1D13700F01
• Description: Embedded Memory Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 62
CSRDIR
bits 1-0
S1D13700F01
X42A-A-002-04
REG[17h] Cursor Shift Direction Register
Address = 8017h
7
6
Default = 00h
Note
The CSRDIR command controls cursor movement when indirect addressing is used. The
values from REG[17h] are passed as part of the command when the CSRDIR command is
issued. For further information on the CSRDIR command, see Section 11.1.6, “CSRDIR”
on page 74.
Cursor Shift Direction bits [1:0]
These bits set the direction of automatic cursor increment when the cursor is automatically
moved after a memory access (read or write). The cursor can move left/right by one char-
acter or up/down by the number of bytes specified by the horizontal address range (or
address pitch), REG[06h] - REG[07h]. When reading from and writing to display mem-
ory, this automatic cursor increment controls the display memory address increment on
each read or write.
The cursor moves in address units even if horizontal character size is equal to 9
(REG[01h] bits 3-0 = 9), therefore the cursor address increment must be preset for
movement in character units. For further information, see Section 12.3, “Cursor Con-
trol” on page 84.
Bit 1
Direct Mode
0
0
1
1
5
AP = Horizontal Address Range
Bit 0
Table 10-8 Cursor Shift Direction
0
1
0
1
n/a
Figure 10-8 Cursor Direction
(REG[06h] bits 7-0, REG[07h] bits 7-0)
01
–1
Indirect Mode
Command
4
Revision 4.05
4C
4D
4E
4F
10
11
–AP
+AP
+1
3
00
Shift Direction
Down
Right
Left
Up
2
Epson Research and Development
Hardware Functional Specification
Cursor Shift Direction bits 1-0
1
Vancouver Design Center
Issue Date: 2005/12/13
Read/Write
0