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
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For Raw14 mode (the default case), the payload is 160 bytes long. Excluding telemetry lines, each packet
contains pixel data for all 80 pixels in a single video line.
o
With AGC disabled:
▪
With 14-bit raw data the first two bits of each pixel's two-byte word are set to 0.
▪
With TLinear output all 16 bits are used.
o
With AGC is enabled:
▪
The first eight bits are set to 0.
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For RGB888 mode, the payload is 240 bytes long. Excluding telemetry lines (which are invalid in RGB
mode), each packet consists of pixel data for a single video line (3 bytes per pixel).
Each case is illustrated in the following payload encoding figures.
Figure 23 - Raw14 Mode: 1 video line per 160-byte payload
Figure 24 - RGB888 Mode: 1 video line per 240-byte payload
4.2.2.2
VoSPI Frames
A single Lepton frame contains data from all 60 or 120 rows of the sensor. However, the total number of video
packets is not necessarily 60 or 120; the exact number depends upon user settings, specifically the telemetry
mode (disabled, as header, or as footer).
shows the number of packets per frame and the contents of
each packet for all of the various combinations.
Table 11 - Video Packet Contents Per Frame as a Function of Video Format and Telemetry-mode
Settings
Configuration
