ADV7342BSTZ Analog Devices Inc, ADV7342BSTZ Datasheet - Page 55

• Manufacturer Part Number: ADV7342BSTZ
• Manufacturer: Analog Devices Inc

Specifications of ADV7342BSTZ

• Number Of Dac's: 6
• Adc/dac Resolution: 11b
• Screening Level: Industrial
• Package Type: LQFP
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

If this filter is disabled, one of the chroma filters shown in
Table 45 can be selected and used for the CVBS or luma/
chroma signal.
Table 45. Internal Filter Specifications
Filter
Luma LPF NTSC
Luma LPF PAL
Luma Notch NTSC
Luma Notch PAL
Luma SSAF
Luma CIF
Luma QCIF
Chroma 0.65 MHz
Chroma 1.0 MHz
Chroma 1.3 MHz
Chroma 2.0 MHz
Chroma 3.0 MHz
Chroma CIF
Chroma QCIF
1
2
ED/HD Sinc Compensation Filter Response
Subaddress 0x33, Bit 3
The ADV7342/ADV7343 include a filter designed to counter
the effect of sinc roll-off in DAC 1, DAC 2, and DAC 3 while
operating in ED/HD mode. This filter is enabled by default. It
can be disabled using Subaddress 0x33, Bit 3. The benefit of the
filter is illustrated in Figure 66 and Figure 67.
Pass-band ripple is the maximum fluctuation from the 0 dB response in the
pass band, measured in decibels. The pass band is defined to have 0 Hz to fc
(Hz) frequency limits for a low-pass filter and 0 Hz to f1 (Hz) and f2 (Hz) to
infinity for a notch filter, where fc, f1, and f2 are the −3 dB points.
3 dB bandwidth refers to the −3 dB cutoff frequency.
–10
–20
–30
–40
–50
–60
0
0
1
EXTENDED (SSAF) PrPb FILTER MODE
Figure 65. PrPb SSAF Filter
Pass-Band
Ripple (dB)
0.16
0.1
0.09
0.1
0.04
0.127
Monotonic
Monotonic
Monotonic
0.09
0.048
Monotonic
Monotonic
Monotonic
2
FREQUENCY (MHz)
3
1
4
3 dB Bandwidth (MHz)
4.24
4.81
2.3/4.9/6.6
3.1/5.6/6.4
6.45
3.02
1.5
0.65
1
1.395
2.2
3.2
0.65
0.5
5
6
Rev. A | Page 55 of 104
2
ED/HD TEST PATTERN COLOR CONTROLS
Subaddress 0x36 to Subaddress 0x38
Three 8-bit registers at Subaddress 0x36 to Subaddress 0x38
are used to program the output color of the internal ED/HD
test pattern generator (Subaddress 0x31, Bit 2 = 1), whether it
be the lines of the crosshatch pattern or the uniform field test
pattern. They are not functional as color controls for external
pixel data input.
The values for the luma (Y) and the color difference (Cr and
Cb) signals used to obtain white, black, and saturated primary
and complementary colors conform to the ITU-R BT.601-4
standard.
Table 46 shows sample color values that can be programmed
into the color registers when the output standard selection is set
to EIA 770.2/EIA 770.3 (Subaddress 0x30, Bits[1:0] = 00).
–0.1
–0.2
–0.3
–0.4
–0.5
–0.1
–0.2
–0.3
–0.4
–0.5
0.5
0.4
0.3
0.2
0.1
0.5
0.4
0.3
0.2
0.1
0
0
0
0
Figure 67. ED/HD Sinc Compensation Filter Disabled
Figure 66. ED/HD Sinc Compensation Filter Enabled
5
5
10
10
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15
ADV7342/ADV7343
20
20
25
25
30
30