SLAU913 august 2023 AFE539A4
The AFE539A4EVM provides access to all AFE pins through connection J1 and J2. Figure 2-1 shows the J1 and J2 pin definitions.
| Pin# | Signal | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | AFE_SDI | SPI SDI signal for AFE |
| 3 | AFE_SYNC | SPI SYNC signal for AFE |
| 4 | AFE_SDA | I2C SDA |
| 5 | GND | Ground |
| 6 | GND | Ground |
| 7 | NC | Not Connected |
| 8 | FTDI_GPIO3 | GPIO3 output of the on-board controller |
| 9 | AFE_GPIO | GPIO input for AFE539A4 |
| 10 | AFE_MODE | Stand alone or programming mode selection pin |
| 11 | AFE_VREF | VREF input to the AFE |
| 12 | AFE_CAP | LDO bypass capacitor |
| 13 | AFE_OUT0 | Output pin for AFE |
| 14 | AFE_ADC | ADC input |
| 15 | AFE_OUT1 | Output pin for AFE VOUT1 |
| 16 | AFE_FB1 | Feedback pin for AFE VOUT1 |
| Pin# | Signal | Description |
|---|---|---|
| 1 | AFE_VDD | VDD power supply for DAC |
| 2 | AFE_SCLK | SPI SCLK |
| 3 | AFE_SDO | SPI SDO |
| 4 | AFE_SCL | I2C SCL |
| 5 | EXT_REF | External reference input for DAC |
| 6 | GND | Ground |
| 7 | GND | Ground |
| 8 | GND | Ground |
| 9 | NC | Not connected |
| 10 | NC | Not connected |
| 11 | AFE_AEN | ADC enable pin |
| 12 | AFE_OUT3 | Output pin for AFE VOUT3 |
| 13 | GND | Ground |
| 14 | GND | Ground |
| 15 | AFE_AIN2 | AFE comparator input |
| 16 | AFE_FB2 | Feedback pin for AFE VOUT2 |