| 122 || CDB@SC16IS752 || UEXT I2C SCL || 5 |- | 123 || RIB@SC16IS752 || UEXT I2C SDA || 6 |- | 120 || DSRB@SC16IS752 || UEXT SPI MISO || 7 |- | 121 || DTRB@SC16IS752 || UEXT SPI MOSI || 8 |-