ICX285 SONY [Sony Corporation], ICX285 Datasheet - Page 23

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ICX285

Manufacturer Part Number
ICX285
Description
Timing Generator for Progressive Scan CCD Image Sensor
Manufacturer
SONY [Sony Corporation]
Datasheet
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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
(2) Operation switches to TRIG drive mode and high-speed sweep for vertical register block charge drain
(3) The charge drain period using the SUB pulse can be selected by the TRIG data “SUB setting”.
(4) The SG pulse generation position can be selected by the TRIG data “SG generation position setting”. After
(5) The clamp pulses can also be stopped after SG pulse generation by the TRIG data “Clamp pulse stop
(6) Be sure to drive in TRIGOUT mode during the next VD period after TRIG drive. (Operation in other modes
Specifications for Each Drive Mode and A Table Corresponding Timing Charts
DRAFT
FINE
TRIGOUT
DRAFT
(high-speed
sweep on)
DRAFT
(high-speed
sweep off)
FINE/TRIGOUT
(high-speed
sweep on)
FINE/TRIGOUT
(high-speed
sweep off)
Drive mode
switches to TRIG drive.
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”.
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.
SG pulse output, V transfer is not performed and standby mode is established until the next VD input.
setting”.
can be not guaranteed.)
TRIG
TRIG
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)
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.
TRIG
TRIG
Frame
rate (s)
1/60
1/15
1/15
Total
number
of HD (H)
1068
1068
267
53 (H) = 1060 (stages), FINE/TRIGOUT: 5 (stages/H)
High-speed
sweep H
period (H)
(fixed)
(fixed)
210
53
0
0
0
0
0
Number of high-
speed sweep
stages (stage)
– 23 –
(fixed)
(fixed)
1060
1050
0
0
0
0
0
Chart-1
Chart-2
Chart-3
Chart-4
Chart-5
Chart-6
Chart-7
Vertical
timing
chart
Chart-10
Chart-10
Chart-10
Chart-10
Chart-10
Readout
block H
chart
Chart-8
Normal
transfer block
H chart
Chart-11
Chart-11
Chart-9
210 (H) = 1050
High-speed
sweep block
H chart
Chart-12
Chart-13
CXD3607R

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