SBAU353 October 2021
The ADS131A04EVM board communicates with the PHI through a shrouded, 60-pin connector, J5. There are two round standoffs next to J5 with Phillips-head screws. To connect the PHI to the EVM, remove the screws, attach the PHI to the EVM, and replace the screws into the standoffs. The screws secure the EVM to the PHI and ensures the connection between the boards.
Table 4-1 lists the different PHI connection and their functions.
| PHI Connector Pin Name | PHI Connector Pin | Function |
|---|---|---|
| EVM_RAW_5V | J5[2] | Power-supply source for the analog section of the EVM |
| GND | J5[3] | Ground |
| M0 | J5[6] | SPI configuration mode select pin |
| M1 | J5[8] | SPI word size select pin |
| M2 | J5[10] | Hamming code enable pin |
| DIN | J5[18] | Serial data input for the ADS131A04 |
| CS | J5[22] | Chip-select for the ADS131A04; active-low |
| SCLK | J5[24] | Serial data clock for the ADS131A04 |
| SCLK | J5[28] | Serial data clock for the ADS131A04 |
| DRDY | J5[30] | Data-ready for the ADS131A04; active-low |
| DOUT | J5[36] | Serial data output for the ADS131A04 |
| RESET | J5[46] | Conversion system reset for the ADS131A04; active-low |
| WP | J5[49] | Write protection for EEPROM |
| 3V3_IOVDD | J5[50] | Power-supply source for the digital section of the EVM |
| SDA | J5[56] | I2C serial data for the EEPROM used to identify the EVM |
| SCL | J5[58] | I2C serial clock for the EEPROM used to identify the EVM |
| EVM_ID_PWR | J5[59] | Power-supply source for the EEPROM used to identify the EVM |
| GND | J5[60] | Ground |