+----------+----------+ +----------+----------+
| ReceiveP | | TransmitP |
+----------+----------+ +----------+----------+
+----------+----------+ +----------+----------+
| ReceiveP | | TransmitP |
+----------+----------+ +----------+----------+
+-----------------------+-------------------------+
| SPI bus, GPIO, Interrupts, Timer Capture |
+-----------------------+-------------------------+
| SPI bus, GPIO, Interrupts, Timer Capture |