init routine

• turn off interrupts

• do initial PHY calibration

• do Backplane timeout fixup

• reset PSM by setting the MAC control register to "IHR Region Enabled" | "PSM Jump 0"

• upload Microcode

• upload PCM microcode

• set all MAC interrupt register bits and start PSM by writing "Infra Mode" | "IHR Region Enabled" | "PSM Run" to the MAC control register
• wait (up to one second) until MAC suspended is set in the MAC interrupt register
• initialise GPIOs (to be detailed)

• write core dependent Initial Values

• fix up FIFO sizes if necessary

• validate that FIFO sizes in SHM match expectations

• set default antenna swap threshold value in SHM
• initialise PIO
• invalidate the last posted broadcast/multicast frame ID in the SHM (by writing 0xffff)
• update slot timings
• initialise FIFO interrupts
• allow MAC to control PHY clock (by setting the "MAC PHY Clock Control Enable" bit in the TM State Low register)

• if core revision is >= 5, program the dynamic clock control faster powerup delay (to be detailed)

• write core revision to SHM
• write retry limits to microcode registers
• write rate fallback retry limits to SHM
• set MAC address and BSSID

• clear crypto engine

• initialise DMA engines/PIO

• initialise band

• QoS init

• enable MAC