adv7390 Analog Devices, Inc., adv7390 Datasheet - Page 71

• Manufacturer Part Number: adv7390
• Description: Low Power, Chip Scale 10-bit Sd/hd Video Encoder
• Manufacturer: Analog Devices, Inc.

APPENDIX 4–INTERNAL TEST PATTERN GENERATION
SD TEST PATTERNS
The ADV739x is able to generate SD color bar and black bar
test patterns.
The register settings in Table 55 are used to generate an SD NTSC
75% color bar test pattern. All other registers are set as normal/
default. Component YPrPb output is available on DAC 1 to
DAC 3. Upon power-up, the subcarrier frequency registers
default to the appropriate values for NTSC.
Table 55. SD NTSC Color Bar Test Pattern Register Writes
Subaddress
0x00
0x82
0x84
For CVBS and S-Video (Y/C) output, 0xCB instead of 0xC9
should be written to Subaddress 0x82.
For component RGB output rather than YPrPb output, 0 should
be written to Subaddress 0x02, Bit 5.
To generate an SD NTSC black bar test pattern, the same
settings shown in Table 55 should be used with an additional
write of 0x24 to Subaddress 0x02.
For PAL output of either test pattern, the same settings are used,
except that Subaddress 0x80 is programmed to 0x11 and the
subcarrier frequency (F
in Table 56.
Table 56. PAL F
Subaddress
0x8C
0x8D
0x8E
0x8F
Note that when programming the F
write the values in the sequence F
F
complete.
SC
value to be written is only accepted after the F
SC
Description
F
F
F
F
Register Writes
SC
SC
SC
SC
0
1
2
3
SC
) registers are programmed as shown
SC
0, F
SC
Setting
0x1C
0xC9
0x40
registers, the user must
SC
1, F
Setting
0xCB
0x8A
0x09
0x2A
SC
2, F
SC
SC
3 write is
3. The full
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ED/HD TEST PATTERNS
The ADV739x is able to generate ED/HD color bar, black bar,
and hatch test patterns.
The register settings in Table 57 are used to generate an ED
525p hatch test pattern. All other registers are set as normal/
default. Component YPrPb output is available on DAC 1 to
DAC 3. For component RGB output rather than YPrPb output,
0 should be written to Subaddress 0x02, Bit 5.
Table 57. ED 525p Hatch Test Pattern Register Writes
Subaddress
0x00
0x01
0x31
To generate an ED 525p black bar test pattern, the same settings
as shown in Table 57 should be used with an additional write of
0x24 to Subaddress 0x02.
To generate an ED 525p flat field test pattern, the same settings
shown in Table 57 should be used, except that 0x0D should be
written to Subaddress 0x31.
The Y, Cr, and Cb levels for the hatch and flat field test patterns
can be controlled using Subaddress 0x36, Subaddress 0x37, and
Subaddress 0x38, respectively.
For ED/HD standards other than 525p, the same settings as
shown in Table 57 (and subsequent comments) are used except
that Subaddress 0x30, Bits[7:3] are updated as appropriate.
ADV7390/ADV7391/ADV7392/ADV7393
Setting
0x1C
0x10
0x05