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CMV50000

Functional Description

Datasheet

• PUBLIC

DS000522

• v4-00 • 2023-Aug-03

136

│ 43

Figure 45:

State Diagram: Triggered Internal Mode

When exiting IDLE mode, the behavior is identical to Programmed External mode: a rising edge on

REQ_EXP will initiate the EXPOSURE state, which ends after a register defined exposure time. When

the exposure time expires, a GLOB state is started, followed by READOUT.

The behavior during the READOUT phase depends on the number of frames that were requested

(also set by register) and the amount of frames that have already been read during the active

sequence:

●

Last READOUT of requested sequence:

●

Finish active READOUT and move back to IDLE state

●

All other READOUT:

●

Restart EXPOSURE for the next frame. EXPOSURE is started at the correct moment to

make it finish exactly 'frame time' later than the GLOB period was started.

●

The end of this EXPOSURE will initiate a new GLOB phase.

●

Because a GLOB period immediately follows the EXPOSURE period, there will be exactly

'frame time' delay between two consecutive frames.

An example (with 3 frames requested) is shown in the figure below.

EXPOSURE

GLOB

IDLE

RESET

READOUT

rising (REQ_EXP)

after (exposure time)

1st

EXPOSURE

GLOB

IDLE

RESET

READOUT

(N)

EXPOSURE

(N+1)

rising (REQ_EXP)

after (exposure time)

after (frame time)

last frame read out

after (ExpDelay) **

=> ExpDelay = frame time

– exp time

=> No new EXPOSURE during last READOUT

1 frame read out

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