BLERXTX_IER register
| TX_IE | TX_IE: interrupt enable on TX_SEQUENCE signal: 0: TX_SEQUENCE interrupt is disabled (default). 1: TX_SEQUENCE interrupt is enabled | 
| RX_IE | RX_IE: interrupt enable on RX_SEQUENCE signal: 0: RX_SEQUENCE interrupt is disabled (default). 1: RX_SEQUENCE interrupt is enabled |