Philips Semiconductors
Preliminary specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI-data slicer and high performance scaler
SAA7114H
15.5.12 SUBADDRESSES B0H TO BFH
Table 122 Vertical luminance scaling increment; register set A (B0H[7:0]; B1H[7:0]) and B (E0H[7:0]; E1H[7:0])
CONTROL BITS
VERTICAL LUMINANCE SCALING
INCREMENT
A (B1H[7:4])
B (E1H[7:4])
A (B1H[3:0])
B (E1H[3:0])
A (B0H[7:4])
B (E0H[7:4])
A (B0H[3:0])
B (E0H[3:0])
YSCY[15:12]
0000
YSCY[11:8]
0000
YSCY[7:4]
0000
YSCY[3:0]
0001
Scale = 1024⁄1 (theoretical) zoom
Scale = 1024
Scale = 1, equals 1024
Scale = 1024
1025 down-scale
Scale = 1⁄63.999 down-scale
⁄
1023 zoom
0000
0011
1111
1111
0000
0100
0000
0000
⁄
0000
0100
0000
0001
1111
1111
1111
1111
Table 123 Vertical chrominance scaling increment; register set A (B2H[7:0]; B3H[7:0]) and B (E2H[7:0]; E3H[7:0])
CONTROL BITS
VERTICAL CHROMINANCE
SCALING INCREMENT
A (B3H[7:4])
B (E3H[7:4])
A (B3H[3:0])
B (E3H[3:0])
A (B2H[7:4])
B (E2H[7:4])
A (B2H[3:0])
B (E2H[3:0])
YSCC[15:12]
YSCC[11:8]
YSCC[7:4]
YSCC[3:0]
This value must be set to the
luminance value YSCY[15:0]
0000
1111
0000
1111
0000
1111
0001
1111
Table 124 Vertical scaling mode control; register set A (B4H[4 and 0]) and B (E4H[4 and 0])
X = don’t care.
CONTROL BITS D4 AND D0
VERTICAL SCALING MODE CONTROL
YMIR
YMODE
Vertical scaling performs linear interpolation between lines
X
X
0
1
Vertical scaling performs higher order accumulating interpolation, better alias
suppression
No mirroring
0
1
X
X
Lines are mirrored
Table 125 Vertical chrominance phase offset ‘00’; register set A (B8H[7:0]) and B (E8H[7:0])
CONTROL BITS D7 TO D0
VERTICAL CHROMINANCE PHASE
OFFSET
YPC07 YPC06 YPC05 YPC04 YPC03 YPC02 YPC01 YPC00
Offset = 0
Offset = 32
Offset = 255
0
0
1
0
0
1
0
1
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
⁄
32 = 1 line
32 lines
⁄
2000 Mar 15
126
NXP [ NXP ]
