Metrologic Instruments IS4921 - Manual (Page 45)

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Decode Board (USB & TTL) Interface Connector
Figure 33. Decode Board Interface Connector
Pin Signal Name Function
1 GND Power and Signal Ground
2 Reserved Terminate with resistor, Pulled low, or Leave Unconnected
3 GND Power and Signal Ground
4 HSYNC Horizontal Sync (Output)
5 VSYNC Vertical Sync (Output)
6 D4 Pixel Data4 (Output)
7 D5 Pixel Data5 (Output)
8 D6 Pixel Data6 (Output)
9 D7 Pixel Data7 (Output)
10 PCLK Pixel Clock (Output)
11 NC No Connection
12 D3 Pixel Data3 (Output)
13 D2 Pixel Data2 (Output)
14 D1 Pixel Data1 (Output)
15 Vimager Camera Voltage (3.1V - 3.5V)
16 D0 Pixel Data0 (LSB) (Output)
17 VLED Voltage supply for Targeting and Area LEDs (3V - 5.5V)
18 SCL I2C clock (Bi-Directional) – Devices Function as Auxiliary Devices
19 SDA I2C Data (Bi-Directional) – Devices Function as Auxiliary Devices
20 Trigger Controls Integration and Illumination in Snapshot Mode (Input)
21 Illum_On High Forces on Illumination LEDs (Input)
22 Aimer High Enables Targeting LED (Input)