adv7322 Analog Devices, Inc., adv7322 Datasheet - Page 46

• Manufacturer Part Number: adv7322
• Description: Multiformat 11-bit Hdtv Video Encoder
• Manufacturer: Analog Devices, Inc.

ADV7322
RESET SEQUENCE
A reset is activated with a high-to-low transition on the RESET
pin [Pin 33] according to the timing specifications. The
ADV7322 will revert to the default output configuration. Figure 62
illustrates the RESET timing sequence.
SD VCR FF/RW SYNC
[Subaddress 0x42, Bit 5]
In DVD record applications where the encoder is used with a
decoder, the VCR FF/RW sync control bit can be used for
nonstandard input video, i.e., in fast forward or rewind modes.
In fast forward mode, the sync information at the start of a new
field in the incoming video usually occurs before the correct
number of lines/fields is reached; in rewind mode, this sync
DIGITAL TIMING
PIXEL DATA
RESET
A, B, C
VALID
DACs
XXXXXX
XXXXXX
DIGITAL TIMING SIGNALS SUPPRESSED
Figure 62. RESET Timing Sequence
Rev. PrA | Page 46 of 88
OFF
signal usually occurs after the total number of lines/fields is
reached. Conventionally this means that the output video will
have corrupted field signals, one generated by the incoming
video and one generated when the internal lines/field counters
reach the end of a field.
When the VCR FF/RW sync control is enabled [Subaddress
0x42, Bit 5], the lines/fields counters are updated according to
the incoming VSYNC signal, and the analog output matches the
incoming VSYNC signal.
This control is available in all slave timing modes except Slave
Mode 0.
Preliminary Technical Data
TIMING ACTIVE
VALID VIDEO