
2000 Mar 15
132
Philips Semiconductors
Preliminary specication
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb lter, VBI-data slicer and high performance scaler
SAA7114H
Table 131 Scaler and interface conguration example
I2C-BUS
ADDRESS
(HEX)
MAIN FUNCTIONALITY
EXAMPLE 1 EXAMPLE 2 EXAMPLE 3 EXAMPLE 4
HEX
DEC
HEX
DEC
HEX
DEC
HEX
DEC
Global settings
80
task enable, IDQ and back-end clock
denition
10
10
10
10
83
XCLK output phase and X-port output enable
01
01
00
00
84
IGPH, IGPV, IGP0 and IGP1 output denition
A0
C5
A0
A0
85
signal polarity control and I-port byte
swapping
10
09
10
10
86
FIFO ag thresholds and video/text
arbitration
45
40
45
45
87
ICLK and IDQ output phase and I-port enable
01
01
01
01
88
power save control and software reset
F0
F0
F0
F0
Task A: scaler input conguration and output format settings
90
task handling
00
00
00
00
91
scaler input source and format denition
08
08
18
38
92
reference signal denition at scaler input
10
10
10
10
93
I-port output formats and conguration
80
40
80
84
Input and output window denition
94
horizontal input offset (XO)
10
16
10
16
10
16
10
16
95
00
00
00
00
96
horizontal input (source) window length (XS)
D0
720
C0
704
D0
720
D0
720
97
02
02
02
02
98
vertical input offset (YO)
0A
10
0A
10
0A
10
0A
10
99
00
00
00
00
9A
vertical input (source) window length (YS)
F2
242
22
290
F2
242
22
290
9B
00
01
00
01
9C
horizontal output (destination) window length
(XD)
D0
720
00
768
60
352
C8
200
9D
02
03
01
00
9E
vertical output (destination) window length
(YD)
F0
240
20
288
20
288
50
80
9F
00
01
01
00
Preltering and prescaling
A0
integer prescale (value ‘00’ not allowed)
01
01
02
02
A1
accumulation length for prescaler
00
00
02
03
A2
FIR prelter and prescaler DC normalization
00
00
AA
F2
A4
scaler brightness control
80
128
80
128
80
128
80
128
A5
scaler contrast control
40
64
40
64
40
64
11
17
A6
scaler saturation control
40
64
40
64
40
64
11
17