FLIR Lepton 1.5, Инженерная спецификация

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FLIR LEPTON® Engineering Datasheet
The information contained herein does not contain technology as defined by the EAR, 15 CFR 772, is publicly available,
and therefore, not subject to EAR. NSR (6/14/2018).
Information on this page is subject to change without notice.
Lepton Engineering Datasheet, Document Number: 500-0659-00-09 Rev: 203
55
VoSPI synchronization is established. If the setting is changed while VoSPI is active, it is necessary to re-
synchronize (see
VoSPI Stream, page 50
).
Figure 30 - Generic VoSPI Packet
ID
CRC
Payload
4 bytes 160 or 240 bytes (depending upon bit resolution setting)
For video packets, the header includes a 2-byte ID and a 2-byte CRC. The ID field encodes the segment number
(1, 2, 3, or 4) and the packet number required to determine where the packet belongs in relation to the final 160
x 120 image (or 160x122 if telemetry is enabled). The segment and packet location in each frame is exemplified
in
Figure 31
. Recall that with telemetry disabled, each segment is comprised of 60 packets, each containing pixel
data for half of a video line. With telemetry enabled, each segment is comprised of 61 packets.
Figure 31 - Segment and Packet Relationship to the 160x120 video image
(a)
Frame contents with telemetry disabled