CYIL1SM0300AA_09 CYPRESS [Cypress Semiconductor], CYIL1SM0300AA_09 Datasheet - Page 21

• Manufacturer Part Number: CYIL1SM0300AA_09
• Description: LUPA-300 CMOS Image Sensor
• Manufacturer: CYPRESS [Cypress Semiconductor]

The data at the output of the sensor is clocked on the rising edge
of CLK. There is a delay of 3.2 ns between the rising edge of CLK
and a change in DATA<9:0>. After this delay DATA<9:0> needs
6 ns to become stable within 10% of VDDD. This means that
Readout Timing in Slave Mode
The start pointer of the window to readout is determined by the
START_X and START_Y registers (as by readout in master
mode). The size of the window in x-direction is also determined
by the NB_OF_PIX register. The length of the window in
y-direction is determined by the externally applied integration
timing. The sensor does not know the desired y-size to readout.
It therefore reads out all lines starting from START_Y. The
readout of lines continues until the user decides to start the FOT.
Even when the line pointer wants to address non existing rows
(row 481 and higher), the sequencer continues to run in normal
readout mode. This means that FRAME_VALID remains high
and LINE_VALID is toggled as if normal lines are readout.
The controller should take care of this and ignore the
LINE_VALIDs that correspond with non existing lines and
Readout time shorter than integration time
The sensor should be timed according to the formulas and
diagram here:
Document Number: 001-00371 Rev. *F
1. INT_TIME_1 should be brought high after a minimum 2 μs
reset time and preferably immediately after the falling edge of
the first LINE_VALID.
LINE_VALID
FRAME_VALID
DATA <9:0>
LINE_VALID
CLK
INT_TIME1
FOT
INVALID
Figure 22. DATA<9.0> Valid Timing
Figure 21. FRAME_VALID Timing
4ns
3.2 + 6ns
Reset
VALID
Readout
DATA<9:0> is stable for a time equal to the clock period minus
6 ns.
Note In slave mode, line valids that occur beyond the desired
image window should be discarded by the user's image data
acquisition system
LINE_VALIDs that correspond with lines that are not inside the
desired readout window.
The length of the FOT and ROT is still controlled by the GRAN
register as described in this data sheet.
Readout time longer than integration time
The sensor should be timed according to the formulas and
diagram here:
1. INT_TIME_1 should be brought high at time (read_t - int_t)
2. At time read_t all INT_TIME_x should simultaneous go low to
2. At time read_t after the last valid LINE_VALID of the desired
3. After the desired integration length all INT_TIME_x should
3.2ns
and preferably immediately after the falling edge of
LINE_VALID.
start the FOT. This is immediately after the falling edge of the
last LINE_VALID of the desired readout window.
window size, all other LINE_VALIDs should be ignored.
simultaneous go low to start the FOT.
Figure 22
INVALID
Integration
6ns
illustrates this.
Clk period – 6ns
VALID
INVALID
FOT
CYIL1SM0300AA
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