NOII5SM1300A-QDC ON Semiconductor, NOII5SM1300A-QDC Datasheet - Page 24
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NOII5SM1300A-QDC
Manufacturer Part Number
NOII5SM1300A-QDC
Description
Manufacturer
ON Semiconductor
Datasheet
1.NOII5SM1300A-QDC.pdf
(34 pages)
Specifications of NOII5SM1300A-QDC
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Rolling Shutter Operation
The integration of the light in the image sensor is done during
readout of the other lines.
The only difference with synchronous shutter is that the
TIME_OUT pin is used to indicate when the Y_SYNC pulse for
the right Y-shift-register (reset Y-shift register) is generated. This
loads the right Y-shift-register with the pointer loaded in register
YR_REG. The Y_SYNC pulse for the left Y-shift register (read
Y-shift register) is generated with Y_START.
The INT_TIME register defines how many lines to count before
the Y_SYNC of the right Y-shift-register is generated, hence
defining the integration time. See also
on page 18 for a detailed description of the rolling shutter
operation.
T
register(INT_TIME)
Note For normal operation the values of the YL_REG and
YR_REG registers are equal.
int
Integration time [# lines] = register(NROF_LINES) –
INT_TIME Register (11:0)
Figure 26. Rolling Shutter Operation
Figure 27. Windowing in X-Direction
Rev. 9 | www.onsemi.com | Page 24 of 34
Windowing in X-Direction
An X_LOAD pulse overrides the internal X_SYNC signal, loading
a new X-pointer (stored in the X_REG register) into the
X-shift-register.
The X_LOAD pulse must appear on the falling edge of
SYS_CLOCK and remain high for two SYS_CLOCK cycles
overlapping two rising edges of SYS_CLOCK. The new
X-pointer is loaded on one of the two rising edges of
SYS_CLOCK.
The available time to upload the register is T
from the previous register load to the rising edge of X_LOAD. It
depends on the settling time of the register and the X-decoder.
Table 25. T
The actual time to load the register itself depends on the
interface mode that is used. The parallel interface is the fastest.
Parallel interface
Serial 3 Wire
Interface Mode
load
for Different Interfaces
1 (about 40 SYS_CLOCK cycles)
16 (at 2.5 MHz data rate)
T
load
(µs)
NOII5SM1300A
load
; it is defined