4. MAC Design

The Mango 802.11 MAC is implemented as bare-metal C applications that run in two dedicated CPUs.

The Upper MAC runs the linux_dev application which implements the interface to the Linux kernel driver

The Lower MAC manages access to the wireless medium, the real-time Tx/Rx state machines, and the PHY interface.

Contents:

• 4.1. MAC Software Applications
  • Linux Device Interface - linux_dev
  • Enhanced Distributed Channel Access (EDCA)
  • NoMAC
• 4.2. MAC Software Framework
  • Interprocessor Communications (IPC)
  • Mutex Locks
  • Synchronized Booting
  • Direct Memory Access (DMA)
  • Interrupts
• 4.3. MAC IP Core
  • Rx Processing
  • Timers
  • Transmit Controllers
  • MAC Core Register Map
  • MAC Core Interface