General Purpose Input Output (GPIO)
This test connects a special adapter to the device's external GPIO interface and performs a series of continuity tests to ensure that all of the communications pins are functional.
Pass/Fail Criteria
- All I/O pins must be able to input and output signals as per the device specification.
Diagram | Color1 | Pin | Line | Function | Description | Parameters | Min | Max | Unit |
---|---|---|---|---|---|---|---|---|---|
Orange | 12 | 0 | GPIO0 | Non-isolated Input/Output TXD (output) for 1.8 V UART |
Input Low Level | 0 | 1.4 | V | |
Input High Level | 2.6 | 24 | V | ||||||
Propagation Delay | 1 | µs | |||||||
Output Low Current | 25 | mA | |||||||
Output High Level | 0 | 24 | V | ||||||
Black | 22 | 1 | GPIO1 | Non-isolated Input/Output RXD (input) for 1.8 V UART |
Input Low Level | 0 | 1.4 | V | |
Input High Level | 2.6 | 24 | V | ||||||
Propagation Delay | 1 | µs | |||||||
Output Low Current | 25 | mA | |||||||
Output High Level | 0 | 24 | V | ||||||
White | 3 | 2 | GPIO2 | Non-isolated Input/Output | Input Low Level | 0 | 1.4 | V | |
Input High Level | 2.6 | 24 | V | ||||||
Propagation Delay | 1 | µs | |||||||
Output Low Current | 25 | mA | |||||||
Output High Level | 0 | 24 | V | ||||||
Green | 4 | 3 | GPIO3 | Non-isolated Input/Output | Input Low Level | 0 | 1.4 | V | |
Input High Level | 2.6 | 24 | V | ||||||
Propagation Delay | 1 | µs | |||||||
Output Low Current | 25 | mA | |||||||
Output High Level | 0 | 24 | V | ||||||
Brown | 5 | N/A | GND | Camera Power Ground | |||||
Red | 6 | N/A | Vout | Camera Power Output | Output Voltage | 3.05 | 3.35 | V | |
Output Current | 120 | mA |
Measurement conditions: Non-Isolated Output: VCC=5 V, Rext=330 Ohm, Non-Isolated Input: VCC=3.3 V. Measured over operating temperature range (-20°C to +50°C ambient temperature), unless otherwise noted.
1—GPIO cable assembly wire colors
2—Dual function pin
Test Stages and Configurations
Test Stage | Test Configuration |
---|---|
U6 | STC I |
Additional Configuration
- GPIO Test Adapter.