Philips Semiconductors
Preliminary specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI-data slicer and high performance scaler
SAA7114H
Table 13 Vertical phase offset usage; assignment of the phase offsets
DETECTED INPUT
FIELD ID
VERTICAL PHASE
OFFSET
TASK STATUS BIT
CASE
EQUATION TO BE USED
0 = upper lines
0 = upper lines
1 = lower lines
0
YPY(C)0[7:0]
YPY(C)1[7:0]
YPY(C)2[7:0]
case 1(1) UP-UP (PHO)
case 2(2) UP-UP
case 3(3) UP-LO
1
0
case 1
case 2
case 3
case 1
UP-UP (PHO)
UP-LO
UP-UP
YSCY[15:0]
------------------------------
64
LO-LO PHO +
– 16
– 16
case 2
case 3
case 1
LO-UP
LO-LO
1 = lower lines
1
YPY(C)3[7:0]
YSCY[15:0]
------------------------------
64
LO-LO PHO +
case 2
case 3
LO-LO
LO-UP
Notes
1. Case 1: OFIDC[90H[6]] = 0; scaler input field ID as output ID; back-end interprets output field ID at logic 0 as upper
output lines.
2. Case 2: OFIDC[90H[6]] = 1; task status bit as output ID; back-end interprets output field ID at logic 0 as upper output
lines.
3. Case 3: OFIDC[90H[6]] = 1; task status bit as output ID; back-end interprets output field ID at logic 1 as upper output
lines.
2000 Mar 15
51
NXP [ NXP ]
