SDA9254-2 Infineon Technologies Corporation, SDA9254-2 Datasheet - Page 3

• Manufacturer Part Number: SDA9254-2
• Description: 2.6mb Dynamic Sequential Access Memory For Television Applications (tv-sam) With On-chip Noise Reduction Filter
• Manufacturer: Infineon Technologies Corporation

Figure 2
Noise Reduction with 4:2:2 Signals
Adaptive Field Based Noise Reduction
The reduction of noise is performed by recursive filtering. The filter has the following transfer
function:
For K = 1 the transfer function is H(z) = 1, that means no filtering is performed and the input data
remains unchanged. For K < 1 noise reduction filtering is activated. The input data and the delayed
data from the memory are combined according H(z).
Semiconductor Group
CLASS
Y
UV
3
8
8
4
4
z
SDC4...11
SDC0...3
DLI0...3
SDC0...3
=
e
j T
H z
FLD
,
=
SDA 9251-2X
------------------------------------------ -
1
SDA 9254-2
–
NR422
3
T
V
1 K
FLD
DD
–
K
=
fielddelay
z
–
1
SQA4...11
SQA0...3
SQA0...3
DLO0...3
4
4
4
8
8
UEB10380
SDA 9254-2
Y
UV
1998-01-16