ICX285

Manufacturer Part NumberICX285
DescriptionTiming Generator for Progressive Scan CCD Image Sensor
ManufacturerSONY [Sony Corporation]
ICX285 datasheet
 
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Page 23/39

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(1) If the drive mode data “TRIG function setting” is 1: Enabled at the falling edge of the TRIG pulse, operation
switches to TRIG drive.
Operation cannot be guaranteed for a TRIG pulse low-active period of 2H or less.
The TRIG pulse is valid when input with the falling edge synchronized to the falling edge of VD.
The TRIG pulse is not accepted after switching to TRIG drive.
The VD pulse is not accepted for until 2H after SG generation after switching to TRIG drive. Serial data is
also not reflected by the falling edge of VD during this period. (Example: When SG is generated at 58H,
VD is not accepted from 1 to 59H)
(2) Operation switches to TRIG drive mode and high-speed sweep for vertical register block charge drain
starts from the falling edge of the next HD after the falling edge of the input TRIG pulse. The number of
high-speed sweep stages differs according to the drive mode at the falling edge of the TRIG pulse as
follows. DRAFT: 20 (stages/H)
(stages). High-speed sweep off can also be selected by the TRIG data “High-speed sweep setting”.
(3) The charge drain period using the SUB pulse can be selected by the TRIG data “SUB setting”.
When high-speed sweep is on, the maximum number of SUB pulses is as follows according to the drive
mode at the falling edge of the TRIG pulse. DRAFT: max. 58 pulses, FINE/TRIGOUT: max. 215 pulses.
When high-speed sweep is off, the number of SUB pulses is two regardless of the drive mode at the falling
edge of the TRIG pulse and the SUB setting value.
(4) The SG pulse generation position can be selected by the TRIG data “SG generation position setting”. After
SG pulse output, V transfer is not performed and standby mode is established until the next VD input.
(5) The clamp pulses can also be stopped after SG pulse generation by the TRIG data “Clamp pulse stop
setting”.
(6) Be sure to drive in TRIGOUT mode during the next VD period after TRIG drive. (Operation in other modes
can be not guaranteed.)
TRIG drive ends at the first VD input 3H onward after SG pulse generation. Even when operation shifted
to TRIG drive during long-time exposure using the “Shutter V setting”, note that serial data is always
reflected at the first VD input 3H onward after SG pulse generation.
Specifications for Each Drive Mode and A Table Corresponding Timing Charts
Total
Frame
number
Drive mode
rate (s)
of HD (H)
DRAFT
1/60
267
FINE
1/15
1068
TRIGOUT
1/15
1068
DRAFT
TRIG
(high-speed
sweep on)
DRAFT
TRIG
(high-speed
sweep off)
FINE/TRIGOUT
TRIG
(high-speed
sweep on)
FINE/TRIGOUT
TRIG
(high-speed
sweep off)
53 (H) = 1060 (stages), FINE/TRIGOUT: 5 (stages/H)
High-speed
Number of high-
Vertical
sweep H
speed sweep
timing
period (H)
stages (stage)
chart
0
0
Chart-1
0
0
Chart-2
0
0
Chart-3
53
1060
Chart-4
(fixed)
(fixed)
0
0
Chart-5
210
1050
Chart-6
(fixed)
(fixed)
0
0
Chart-7
– 23 –
CXD3607R
210 (H) = 1050
Readout
Normal
High-speed
block H
transfer block
sweep block
chart
H chart
H chart
Chart-8
Chart-9
Chart-10
Chart-11
Chart-11
Chart-10
Chart-12
Chart-10
Chart-10
Chart-13
Chart-10