ADV7341BSTZ Analog Devices Inc, ADV7341BSTZ Datasheet - Page 57

• Manufacturer Part Number: ADV7341BSTZ
• Manufacturer: Analog Devices Inc

Specifications of ADV7341BSTZ

• Number Of Dac's: 6
• Adc/dac Resolution: 12b
• Screening Level: Industrial
• Package Type: LQFP
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

FILTERS
Table 44 shows an overview of the programmable filters
available on the ADV7340/ADV7341.
Table 44. Selectable Filters
Filter
SD Luma LPF NTSC
SD Luma LPF PAL
SD Luma Notch NTSC
SD Luma Notch PAL
SD Luma SSAF
SD Luma CIF
SD Luma QCIF
SD Chroma 0.65 MHz
SD Chroma 1.0 MHz
SD Chroma 1.3 MHz
SD Chroma 2.0 MHz
SD Chroma 3.0 MHz
SD Chroma CIF
SD Chroma QCIF
SD PrPb SSAF
ED/HD Chroma Input
ED/HD Sinc Compensation Filter
ED/HD Chroma SSAF
NTSC/PAL M SYSTEM
(525 LINES/60Hz)
(625 LINES/50Hz)
HSYNC
FIELD
PIXEL
DATA
INPUT PIXELS
PAL SYSTEM
ANALOG
VIDEO
Y
END OF ACTIVE
VIDEO LINE
C
r
Y
F
F
4 CLOCK
4 CLOCK
EAV CODE
0
0
Figure 63. Square Pixel Mode EAV/SAV Embedded Timing
0x82
0
0
Subaddress
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x80
0x33
0x33
0x33
Figure 64. Square Pixel Mode Active Pixel Timing
X
Y
8
0
1
0
8
0
1
0
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ANCILLARY DATA
0
0
272 CLOCK
344 CLOCK
F
F
(HANC)
F
F
A
B
A
B
SD Internal Filter Response
Subaddress 0x80, Bits[7:2]; Subaddress 0x82, Bit 0
The Y filter supports several different frequency responses,
including two low-pass responses, two notch responses, an
extended (SSAF) response with or without gain boost
attenuation, a CIF response, and a QCIF response. The PrPb
filter supports several different frequency responses, including
six low-pass responses, a CIF response, and a QCIF response, as
shown in Figure 38 and Figure 39.
If SD SSAF gain is enabled (Subaddress 0x87, Bit 4), there are 13
response options in the −4 dB to +4 dB range. The desired response
can be programmed using Subaddress 0xA2. The variation in
frequency responses is shown in Figure 35 to Figure 37.
In addition to the chroma filters listed in Table 44, the ADV7340/
ADV7341 contain an SSAF filter that is specifically designed for
the color difference component outputs, Pr and Pb. This filter
has a cutoff frequency of ~2.7 MHz and a gain of –40 dB at
3.8 MHz (see Figure 65). This filter can be controlled with
Subaddress 0x82, Bit 0.
A
B
8
0
1
0
8
0
1
0
SAV CODE
4 CLOCK
F
F
4 CLOCK
START OF ACTIVE
0
0
NTSC = 236 CLOCK CYCLES
PAL = 308 CLOCK CYCLES
VIDEO LINE
0
0
X
Y
C
b
Cb
Y C
1280 CLOCK
1536 CLOCK
r
Y
Y
C
b
Y
ADV7340/ADV7341
Cr
C
r
Y
Y
C
b