1 - 4
9
ENG_RESET
2
Input - Asynchronous reset for the Image Scanning Engine microcontroller. This line should be con-
nected to GPIO and is required for ISSP (Reset) firmware download of the engine microcontroller.
10 Ground Power and signal ground.
11
Flash_OUT
1
Output - External illumination control output
12
PCLK
1
Output - Imager timing signal that clocks pixel data. This signal is configurable. See register information.
13 N/C Reserved for future use. This line should be left disconnected.
14 Ground Power and signal ground.
15 Ground Power and signal ground.
16 AIM_ON Input - Active high on this line enables the aimer based on illumination mode. This line is also required
for ISSP (Clock) firmware download of the engine microcontroller.
17
I
2
C_SCL Input - Image scanning Engine follows I
2
C slave protocols with respect to this signal. This is the I
2
C SCL
signal with 2k ohm pull-up resistor.
18 ILL_ON Input - Active high on this line enables the illumination based on illumination mode. This line is also
required for ISSP (Data) firmware download of the engine microcontroller.
19
IMG_D3
1
Output- pixel data.
20
PWR_ENA
3
Input - Active high sets the Image Scanning Engine in Active mode. An active low (longer than 10 milli-
seconds) sets the Image Scanning Engine in Sleep mode and resets all registers of the image sensor.
21 Ground Power and signal ground.
22 Ground Power and signal ground.
23
IMG_D2
1
Output - pixel data.
24
I
2
C_SDA Input/Output - Image scanning Engine follows I
2
C slave protocols with respect to this signal. This is the
I
2
C SDA signal with 2k ohm pull-up resistor.
25
IMG_D0
1
Output - pixel data.
26 VIN_3V3_LED_LASER 3.3Vdc +/- 5% power supply input for the LED illumination, laser aimer (on Laser Aimer Engines only),
and scanning engine microcontroller. (Please note: Pin 26 and Pin 28 are internally tied together.)
27 VIN_3V3_IMGR 3.3Vdc +/- 5% power supply for the imager.
28 VIN_3V3_LED_LASER 3.3Vdc +/- 5% power supply input for the LED illumination, laser aimer (on Laser Aimer Engines only),
and scanning engine microcontroller. (Please note: Pin 26 and Pin 28 are internally tied together.)
29
IMG_D1
1
Output - pixel data.
30 Ground Power and signal ground.
Signal Name
(Parallel)
Input or Output
from Optics Module
Description
IMG_D[7:0] Output 8 bit A/D converted imager output
VSYNC Output Indicates the start of a frame
HSYNC Output Indicates the active pixel data of the Horizontal line
PCLK Output Pixel data is valid on the rising edge of clock
PWR_ENA Input Commands imager to enter a low power sleep mode
AIM_ON Input External Aimer Control / ISSP Serial Clock
ILL_ON Input External Illumination Control / ISSP Serial Data
I2C Input/output I2C communication interface (with 2kohm pull-up resistors)
ENG_RESET Input Reset signal
FLASH_OUT Output Auxiliary Illumination Control
Pin Signal Description
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WillLi595
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