ICX202 SONY [Sony Corporation], ICX202 Datasheet - Page 19

• Manufacturer Part Number: ICX202
• Description: Timing Generator for Frame Readout CCD Image Sensor
• Manufacturer: SONY [Sony Corporation]

Control data/shutter data: [Electronic shutter]
The CXD2470R realizes various electronic shutter functions by using control data D13 to D14 SMD and
shutter data D10 to D17 SVD, D18 to D27 SHD and D28 to D35 SPL.
These functions are described in detail below.
First, the various modes are shown below.
These modes are switched using control data D13 to D14 SMD.
The period during which SVD and SHD are specified together is the shutter speed. Concretely, when specifying
high-speed shutter, SVD is set to "00h". (See the figure.) During low-speed shutter, or in other words when
SVD is set to "01h" 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 SHD can be considered as (number of SUB pulses – 1).
Note) The bit data definition area is assured in terms of the CXD2470R functions, and does not assure the
The electronic shutter data is expressed as shown in the table below using D18 to D27 SHD as an example.
[Electronic shutter stopped mode]
During this mode, all shutter data items are invalid.
SUB is not output in this mode, so the shutter speed is the accumulation time for one field.
[High-speed/low-speed shutter mode]
During this mode, the shutter data items have the following meanings.
MSB
Symbol
D27 D26 D25 D24 D23 D22 D21 D20 D19 D18
D14
SVD
SHD
SPL
0
0
0
1
1
1
CCD characteristics.
1
D13
D10 to D17
D18 to D27
D28 to D35
0
1
0
1
Data
1
Electronic shutter stopped mode
High-speed/low-speed shutter mode
HTSG control mode
1
Description of operation
C
Number of vertical periods specification (00h ≤ SVD ≤ FFh)
Number of horizontal periods specification (000h ≤ SHD ≤ 3FFh)
Vertical period specification for high-speed shutter operation (00h ≤ SPL ≤ FFh)
0
0
0
0
3
– 19 –
1
LSB
1
Description
SHD is expressed as 1C3h .
CXD2470R