Cursorsize – Cirrus Logic EP93xx User Manual
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DS785UM1
Copyright 2007 Cirrus Logic
Raster Engine With Analog/LCD Integrated Timing and Interface
EP93xx User’s Guide
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CursorSize
Address: 0x8003_0068
Default: 0x0000_0000
Definition: Cursor Height, Width, and Step Size register
Bit Descriptions:
RSVD:
Reserved - Unknown during read
DLNS:
Dual Scan Lower Half Lines - Read/Write
If DSCAN = ‘1’ in the
register, the Dual Scan
Lower Half Lines value that is written to this field specifies
the number of cursor lines that are displayed in the lower
half of the display.
CSTEP:
Cursor Step Size - Read/Write
The Cursor Step Size value that is written to this field
specifies the counter step size for the width of the cursor
image:
00 - Step by 1 word or 16 pixels at a time
01 - Step by 2 words or 32 pixels at a time
10 - step by 3 words or 48 pixels at a time
11 - Step by 4 words or 64 pixels at a time
CLINS:
Cursor Lines - Read/Write
The Cursor Lines value that is written to this field specifies
the height in lines of the cursor image. The value should
be set to ‘number of cursor lines minus one’.
In dual scan mode this field should be set to the ‘number
of cursor lines minus one’ to be displayed in the top half of
the display.
CWID:
Cursor Width - Read/Write
The Cursor Width value that is written to this field specifies
the ‘displayed word width minus one’ of the cursor image:
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
RSVD
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DLNS
CSTEP
CLINS
CWID