2004 Mar 16
185
Philips Semiconductors
Product specification
PC-CODEC
SAA7108E; SAA7109E
18.2.5.8
Subaddresses 9CH to 9FH
Table 221
Horizontal output window length; register set A [9CH[7:0]; 9DH[3:0]] and B [CCH[7:0]; CDH[3:0]]
Notes
1.
2.
Reference for counting are luminance samples.
If the desired output length is greater than the number of scaled output pixels, the last scaled pixel is repeated.
Table 222
Vertical output window length; register set A [9EH[7:0]; 9FH[3:0]] and B [CEH[7:0]; CFH[3:0]]
Note
1.
If the desired output length is greater than the number of scaled output lines, the processing is cut.
18.2.5.9
Subaddresses A0H to A2H
Table 223
Horizontal prescaling; register set A [A0H[5:0]] and B [D0H[5:0]]
HORIZONTAL OUTPUT
ACQUISITION WINDOW
DEFINITION NUMBER OF
DESIRED OUTPUT PIXEL IN
X (HORIZONTAL) DIRECTION
(1)
CONTROL BITS
A [9DH[3:0]]
B [CDH[3:0]]
A [9CH[7:0]]
B [CCH[7:0]]
XD11 XD10
XD9
XD8
XD7
XD6
XD5
XD4
XD3
XD2
XD1
XD0
No output
Odd lengths are allowed, but will be
filled up to even lengths
Maximum possible number of input
pixels = 4095; note 2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
VERTICAL OUTPUT ACQUISITION
WINDOW DEFINITION NUMBER
OF DESIRED OUTPUT LINES IN
Y (VERTICAL) DIRECTION
CONTROL BITS
A [9FH[3:0]]
B [CFH[3:0]]
A [9EH[7:0]]
B [CEH[7:0]]
YD11 YD10
YD9
YD8
YD7
YD6
YD5
YD4
YD3
YD2
YD1
YD0
No output
1 pixel
Maximum possible number of output
lines = 4095; note 1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
1
1
HORIZONTAL INTEGER PRESCALING RATIO (XPSC)
CONTROL BITS 5 TO 0
XPSC5 XPSC4 XPSC3 XPSC2 XPSC1 XPSC0
Not allowed
Downscale = 1
Downscale =
1
2
...
Downscale =
1
63
0
0
0
...
1
0
0
0
...
1
0
0
0
...
1
0
0
0
...
1
0
0
1
...
1
0
1
0
...
1