CDB4955A Cirrus Logic Inc, CDB4955A Datasheet - Page 30

• Manufacturer Part Number: CDB4955A
• Description: EVALUATION BOARD FOR CS4955A
• Manufacturer: Cirrus Logic Inc

Specifications of CDB4955A

• Main Purpose: Video, Video Processing
• Embedded: Yes, Other
• Utilized Ic / Part: CS4955
• Primary Attributes: NTSC/PAL Digital Video Encoder
• Secondary Attributes: Graphical User Interface, RS-232 Interface
• Operating Frequency: 27 MHz
• Interface Type: RS-232, Composite, RGB, S-Video
• Operating Supply Voltage: 3.3 V, 5 V
• Software: Software Included
• Silicon Manufacturer: Cirrus Logic
• Silicon Core Number: CS4955
• Kit Application Type: Audio / Video / TV
• Application Sub Type: Encoder / Decoder
• Kit Contents: Evaluation Board
• Rohs Compliant: No
• For Use With/related Products: CS4954
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

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Figure 18. Chrominance output interpolation filter transfer
Figure 20. Luminance interpolation filter transfer charac-
-0.2
-0.4
-0.6
-0.8
0.8
0.6
0.4
0.2
-0.5
-1.5
-2.5
-3.5
-1
1
0
0.5
-1
-2
-3
0
0
0
0.5
Luma Output Interpolation Filter Response at 27 MHz (-3 dB)
1
1
characteristic (passband)
2
Chroma Output Interpolator Pass band
1.5
terstic (passband)
3
Frequency (MHz)
Frequency (MHz)
2
2.5
4
3
5
3.5
6
4
4.5
7
5
8
Figure 19. Luminance interpolation filter transfer charac-
Figure 21. Chrominance interpolation filter transfer char-
-10
-15
-20
-25
-30
-35
-40
-10
-15
-20
-25
-30
-35
-40
-5
0
-5
0
0
0
Luma Output Interpolation Filter Response at 27MHz full scale
2
2
acteristic for RGB datapath
RGB datapath filter for rgb_bw = 0 full scale
4
4
teristic
Frequency (MHz)
Frequency (MHz)
6
6
CS4954 CS4955
8
8
10
10
12
DS278F6
12
14