
June 1997
147
ADVANCE DATA BOOK v2.0
THE VIDEO SOUND AND PROGRAMMER’S MODEL
CL-PS7500FE
System-on-a-Chip for Internet Appliance
16.13 Horizontal Cursor Start Register (HCSR): Address 0x86
This register defines the time, in pixels, from the start of the HSYNC pulse to the start of the cursor display.
This is a 14-bit register where all bits can be programmed. If N pixels are required in this time, then pro-
gram the value (N
17) into the HCSR. The cursor can thus be programmed to start on any pixel. In HiRes
mode, the cursor can still only be programmed to start on a normal pixel boundary. However, because the
resolution of the cursor can be defined to a
μ
-pixel, by using different cursor images it is possible to posi-
tion the cursor to any
μ
-pixel.
NOTE:
Only the cursor start position needs to be defined, as the cursor is automatically disabled after 32 pixels in
normal mode or 16 pixels in HiRes mode. If a smaller cursor is required, program the remaining bits in the
cursor pattern to logical color ‘00’ (transparent).
16.14 Horizontal Interlace Register (HIR): Address 0x87
Address 87H is reserved. Do not program this register.
16.15 Horizontal Test Registers: Addresses 0x88 and 0x8H
These two registers are provided for test purposes only. Neither of these registers are intended for use
during normal operation.
16.16 Vertical Cycle Register (VCR): Address 0x90
This 13-bit register defines the period, in units of a raster, of the vertical scan (that is,
display time + FLYBACK time). If N rasters are required in a complete frame, then value (N
2) should be
programmed into the VCR. If an interlaced display is selected, (N
3)
÷
2 must be programmed into the
VCR (N must be odd.) Here N is still the number of rasters in a complete frame, nota field.
0 0 0
0
3
4
7
8
11
12
15
16
19
20
21
22
27
28
31
1
2
5
6
9
10
13
14
17
18
23
24
25
26
29
30
X X X X X X X
HCSR value
0
0
1
X X X X X
1 1
X
0 0
0
3
4
7
8
11
12
15
16
19
20
21
22
27
28
31
1
2
5
6
9
10
13
14
17
18
23
24
25
26
29
30
X X X X X X X
VCR value
0
0
1
X X X X X
X
0 0
1