NOIL1SN3000A
stable supply voltages
RESET_N
min 0.5u s
RESET_N_SEQ
idle words
LVDS output
Figure 33. Reset on Startup
Sequencer Reset
The sequencer is reset separately by bringing the
RESET_N_SEQ register low. This causes an asynchronous
reset of the sequencer. The reset must have a length of at least
20 clock cycles (five words). Resetting the sequencer
corrupts the analog voltages stored in the pixel array.
Therefore, a new readout sequence must start with an
exposure first. After the reset, a readout sequence is
reinitiated by using EXPOSURE_1 pin. Ensure the reset of
the pixel array is long enough ( 3 3 m s).
min 20 clk cycle s
RESET_N_SEQ
pix_rese t
EXPOSURE_1
FOT+ROT
idle words
LVDS outputs
Figure 34. Sequencer Reset
Startup Sequence
To guarantee the correct startup of all the sensor modules,
perform the following startup sequence:
1. All supplies are powered on simultaneous, but the
RESET_N pin is kept low. The VAA is not
powered on before VDD is powered on.
2. When all supplies are stable, bring RESET_N pin
high. The sensor now begins to operate.
3. Set RESET_N_SEQ register bit to zero if other
SPI registers need to be uploaded.
4. Set the RESET_N_SEQ bit to 1 if all required SPI
registers are changed. LUPA3000 operates only in
slave mode; therefore, the sensor is now controlled
through the EXPOSURE_1 pin.
http://onsemi.com
40
valid data
相关PDF资料
NOIL1SM0300A-WWC IC IMAGE SENSOR LUPA300 48LLC
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