ADV7181BCP Analog Devices Inc, ADV7181BCP Datasheet - Page 29

• Manufacturer Part Number: ADV7181BCP
• Description: IC VIDEO DECODER NTSC 64-LFCSP
• Manufacturer: Analog Devices Inc
• Type: Video Decoderr

Specifications of ADV7181BCP

• Applications: Recorders, Set-Top Boxes
• Voltage - Supply, Analog: 3.15 V ~ 3.45 V
• Voltage - Supply, Digital: 1.65 V ~ 2 V
• Mounting Type: Surface Mount
• Package / Case: 64-LFCSP
• Adc/dac Resolution: 9b
• Screening Level: Industrial
• Package Type: LFCSP EP
• Pin Count: 64
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: EVAL-ADV7181BEB - BOARD EVALUATION FOR ADV7181
• Lead Free Status / RoHS Status: Compliant, Contains lead / RoHS non-compliant

Table 59. YSFM Function
YSFM[4:0]
0'0000
0'0001
(default)
0'0010
0'0011
0'0100
0'0101
0'0110
0'0111
0'1000
0'1001
0'1010
0'1011
0'1100
0'1101
0'1110
0'1111
1'0000
1'0001
1'0010
1'0011
1'0100
1'0101
1'0110
1'0111
1'1000
1'1001
1'1010
1'1011
1'1100
1'1101
1'1110
1'1111
WYSFM[4:0] Wide Band Y Shaping Filter Mode,
Address 0x18 [4:0]
The WYSFM[4:0] bits allow the user to manually select a shaping
filter for good quality video signals, for example, CVBS with
stable time base, luma component of YPrPb, luma component
of YC. The WYSFM bits are only active if the WYSFMOVR bit
is set to 1. See the general discussion of the shaping filter
settings in the Y Shaping Filter section.
Automatic selection including a wide notch
response (PAL/NTSC/SECAM)
Automatic selection including a narrow notch
response (PAL/NTSC/SECAM)
NTSC NN 1
NTSC NN 2
NTSC NN 3
Reserved.
Description
SVHS 1
SVHS 2
SVHS 3
SVHS 4
SVHS 5
SVHS 6
SVHS 7
SVHS 8
SVHS 9
SVHS 10
SVHS 11
SVHS 12
SVHS 13
SVHS 14
SVHS 15
SVHS 16
SVHS 17
SVHS 18 (CCIR 601)
PAL NN 1
PAL NN 2
PAL NN 3
PAL WN 1
PAL WN 2
NTSC WN 1
NTSC WN 2
NTSC WN 3
Rev. B | Page 29 of 104
Table 60. WYSFM Function
WYSFM[4:0]
0'0000
0'0001
0'0010
0'0011
0'0100
0'0101
0'0110
0'0111
0'1000
0'1001
0'1010
0'1011
0'1100
0'1101
0'1110
0'1111
1'0000
1'0001
1'0010
1'0011 (default)
1'0100–1’1111
The filter plots in Figure 11 and Figure 22 show the
S-VHS 1 (narrowest) to S-VHS 18 (widest) shaping filter
settings. Figure 13 shows the PAL notch filter responses.
The NTSC-compatible notches are shown in Figure 14.
–10
–20
–30
–40
–50
–60
–70
0
0
Figure 11. Y S-VHS Combined Responses
COMBINED Y ANTIALIAS, S-VHS LOW-PASS FILTERS,
2
4
FREQUENCY (MHz)
Y RESAMPLE
6
Description
Do not use
Do not use
SVHS 1
SVHS 2
SVHS 3
SVHS 4
SVHS 5
SVHS 6
SVHS 7
SVHS 8
SVHS 9
SVHS 10
SVHS 11
SVHS 12
SVHS 13
SVHS 14
SVHS 15
SVHS 16
SVHS 17
SVHS 18 (CCIR 601)
Do not use
8
10
ADV7181
12