CXD3609R Datasheet, PDF (22/72 Pages) Sony Corporation – Timing Generator for Progressive Scan CCD Image Sensor

CXD3609R
Concretely, when specifying high-speed shutter, SVR is set to "000h". (See the figure.) During low-speed
shutter, or in other words when SVR is set to "001h" or higher, the serial interface data is not loaded until this
period is finished.
The vertical period indicated here corresponds to one field in each drive mode. In addition, the number of
horizontal periods applied to SHR can be considered as (number of SUB pulses – 1).
VR
V2A
SUB
WEN
EXP
SMD
00
SVR
SHR
SHR
SVR
01
002h
10Fh
00
000h
050h
Exposure time
Further, SPL can be used during this mode to specify the SUB output at the optional vertical period during the
low-speed shutter period.
In the case below, SUB is output based on SHR at the SPL vertical period out of (SVR + 1) vertical periods.
VR
V2A
SUB
WEN
EXP
SMD
00
SPL
SVR
SHR
Exposure time
SPL
000
001
SHR
002
SVR
01
001h
002h
10Fh
00
000h
000h
0A3h
Incidentally, SPL is counted as "000h", "001h", "002h" and so on in conformance with SVR. At this time even if
SPL > SVR is set, operation conforms to the state when SPL = SVR.
Using this function it is possible to achieve smooth exposure time transitions when changing from low-speed
shutter to high-speed shutter or vice versa.
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