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
54
4.2.3 VoSPI Protocol – Lepton 3.0 and 3.5
The Lepton 3 VoSPI is built on a collection of object types as defined hierarchically below.
▪ VoSPI Packet: The Lepton 3 VoSPI protocol is based on a single standardized VoSPI packet, the minimum
“transaction” between master and slave. Each video packet contains data for a single video line or
telemetry line. In addition to video packets, the VoSPI protocol includes discard packets that are provided
when no video packets are available.
▪ VoSPI Segment: A VoSPI segment is defined as a continuous sequence of VoSPI packets consisting of
one quarter of a frame of pixel data. To maintain synchronization, it is necessary to read out each
VoSPI segment before the next is available.
▪ VoSPI Stream: A VoSPI stream is defined as a continuous sequence of VoSPI segments.
As summarized in Table 10, the packet length and number of packets per frame vary depending upon two
runtime user selections, telemetry mode and bit resolution.
▪ Telemetry mode:
▪ Telemetry disabled (default)
▪ Telemetry enabled
▪ Video Format mode:
▪ Raw14 (default)
▪ RGB888
Table 12 - Packet Length and Number of Video Packets per Frame as a Function of User Settings
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