NEC µPD72257 Preliminary User's Manual page 177

Video Input (Ravin-M only)
6.10.2.5
Access
Address
Initial Value
31 30 29 28
0 0 0 0
R R R R
15 14 13 12
0 0 0 0
R R R R
Bit Bit name
10 to 2 SCWIDTH[10:2] Scaled pixels per scanline
SCWIDTH[1:0] Lower address bits SCWIDTH[1:0] must be set to 00
1 to 0
VInSCALEDWIDTH - Scaled pixels/line register
This register holds the number of scaled pixels per line to capture in framebuffer.
The width must be a multiple of four pixels.
This register can be read/written in 32-bit units.
<VIn_Base> + 10
H
0000 0000 . This register is initialized by any reset.
H
27 26 25 24
0 0 0
R R R
11 10 9
0
R
Writing to the read-only bits is ignored, reading returns undefined values.
Function
Preliminary User's Manual S19203EE1V3UM00
23 22 21
0 0 0 0
R R R R
8 7 6 5
SCWIDTH[10:2]
R/W
Chapter 6
20 19 18 17
0 0 0 0
R R R R
4 3 2 1
SCWIDTH[1:0]
R/W
due to 4-pixel alignment
B
16
0
R
0
177