CYII4SM014KAA-GECH Cypress Semiconductor Corp, CYII4SM014KAA-GECH Datasheet - Page 8

• Manufacturer Part Number: CYII4SM014KAA-GECH
• Description: Optical Sensors - Board Mount 50mA 3.3V CMOS Sense
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYII4SM014KAA-GECH

• Supply Current: 50 mA
• Operating Supply Voltage: 3.3 V
• Package / Case: PGA-49
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Output Amplifier Crossbar Switch (multiplexer)
A crossbar switch is available that routes the green pixels always
to the same output. The switch can be controlled automatically
(with a toggle on every CLK_Y rising edge) or manually (through
the SPI register).
A pulse on SYNC_Y resets the crossbar switch. The initial state
after reset of the switchboard is read from the SPI control
register. When the automatic toggling of the switchboard is
enabled, it toggles on every rising edge of the CLK_Y clock.
Separate pins are used for the SYNC_Y and CLK_Y signals on
the crossbar logic these pins can be connected to the SYNC_YL
and CLK_YL pins of the shift register that is used for readout as
shown in
Figure 6. Output Amplifier Crossbar Switch
Document #: 38-05709 Rev. *F
SYNC_YR
Figure
6.
CLK_YR
Q
Manual
Power
Power
Power
Power
Readout and Subsampling Modes
The subsampling modes available on the IBIS4-14000 are
summarized in
Table 1. Subsampling Modes
Each mode is selected independently for the X-shift and Y-shift
registers. The subsampling mode is configured via the serial
input port of the chip. The Y-shift and X-shift registers have some
difference in subsampling modes because of constraints in the
design of the chip.
The baseline full resolution operation mode uses four outputs to
read out the entire image. Four consecutive pixels of a row are
put in parallel on the four parallel outputs.
Subsampling is implemented by a shift register with hard coded
subsample modes. Depending on the selected mode, the shift
register skips the required number of pixels when shifting the row
or column pointer.
The X-shift register always selects four consecutive columns in
parallel. You can subsample in X by activating one of the modes
wherein a multiple of four consecutive columns are skipped on a
CLK_X pulse. The Y-shift register selects a single row. It consec-
utively selects two adjacent rows and then skips a set number of
rows (the number of rows to skip is set in the subsample mode).
000
001
010
011
100
101
000
010
100
001
011
101
code
code
Subsampling Modes Programmed into SPI Register
X-shift register subsampling settings
Y-shift register subsampling settings
Bit-
Bit-
1:1
Full resolution
(all columns)
24:1
Select 4 columns/ skip 20
8:1
Select 4 columns / skip 4s
12:1
Select 4 columns / skip 8
4:1
Select 2 rows / skip 2
1:1
Full resolution (all rows)
6:1
Select 2 rows / skip 4
12:1
Select 2 rows / skip 10
Table
Mode
Mode
1.
CYII4SM014KAA
Full resolution (4 outputs)
4:1 subsampling
24:1 subsampling ( 2
outputs)
8:1 subsampling (2
outputs)
12:1 subsampling (2
outputs)
4:1 subsampling
Full resolution
6:1 subsampling
12:1 subsampling
Use
Use
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