1.2.5.6.2 SAM9x60 EMAC (EMAC) Configurations

EMAC Specific User Configurations

• MAC Base Address:

  • Selected EMAC peripheral base address
  • Default value: EMACx_BASE_ADDRESS
  • Symbol MAC_BASE_ADDRESS

• Default Network MAC Driver:

  • Name of the MAC driver
  • Default value: "DRV_EMACx_Object"
  • Symbol DRV_MAC_CODE

• Interrupt Source:

  • The EMAC peripheral interrupt source
  • Default value: "EMACn_IRQn"
  • Symbol MAC_INTERRUPT_SOURCE

• MAC Default Configuration for Network Traffic:

  • Default configuration settings for low/medium/high network traffic
  • Default value: "Medium"
  • Symbol TCPIP_EMAC_TRAFFIC

• TX descriptor count:

  • Number of the TX descriptors to be created for this queue.
  • Default value: 80
  • Symbol TX_DESCRIPTOR_COUNT_n

• TX buffer size:

  • Size of the TX buffer for this queue
  • Note: should be a multiple of 16
  • Default value: 1536/64
  • Symbol TX_BUFFER_SIZE_n

• RX buffer size:

  • Size of a RX packet buffer for this queue.
  • Note: Should be multiple of 16.
  • Default value: 128
  • Symbol RX_BUFFER_SIZE_n

• RX descriptor count:

  • Number of the RX descriptors to be created for this queue
  • Acceptable values: 12 to 1024
  • Default value: 100
  • Symbol RX_DESCRIPTOR_COUNT_n

• RX static buffers:

  • Number of static RX packet buffers for this queue.
  • These buffers are always owned by the EMAC.
  • Default value: 0
  • Symbol RX_STATIC_BUFFERS_n

• RX dynamic allocation threshold:

  • Minumum threshold for the buffer replenish process for this queue.
  • Whenever the number of RX scheduled buffers is <= than this threshold the EMAC driver will allocate new non-dedicated buffers (meaning that they will be released to the TCP/IP heap once they are processed).
  • Setting this value to 0 disables the buffer replenishing process.
  • Default value: 15
  • Symbol RX_BUFFER_ALLOCATION_THRESHOLD_n

• RX dynamic buffer allocation:

  • Number of buffers allocated dynamically for this queue
  • Default value: 30
  • Symbol RX_BUFFER_ALLOCATION_n

• RX Link Filters:

  • EMAC RX Filters
  • These filters define the packets that are accepted and rejected by the EMAC driver
  • Adjust to your needs
  • The default value allows the processing of unicast, multicast and broadcast packets that have a valid CRC
  • Default value: none
  • Symbol DRV_EMACn_RX_FILTERS

• Accept Broadcast Packets:

  • Allow the receiving of broadcast packets
  • Default value: true
  • Symbol LINK_ACCEPT_BCAST, DRV_EMACn_RX_FILTERS

• Accept Multicast Packets:

  • Allow the receiving of multicast packets
  • Default value: true
  • Symbol LINK_ACCEPT_MCAST, DRV_EMACn_RX_FILTERS

• Accept Unicast Packets:

  • Allow the receiving of unicast packets
  • Default value: true
  • Symbol LINK_ACCEPT_UCAST, DRV_EMACn_RX_FILTERS

• Accept Multicast Packets matching Hash:

  • Enable EMAC multicast Hash RX filter
  • Default value: false
  • Symbol LINK_ACCEPT_MCAST_HASH, DRV_EMACn_RX_FILTERS

• Accept Unicast Packets matching Hash:

  • Enable EMAC unicast Hash RX filter
  • Default value: false
  • Symbol LINK_ACCEPT_UCAST_HASH, DRV_EMACn_RX_FILTERS

• Reject Packets with Wrong CRC:

  • The EMAC RX should reject packets with wrong CRC
  • Default value: true
  • Symbol LINK_REJECT_CRC_ERROR, DRV_EMACn_RX_FILTERS

• Accept Packets with Wrong CRC:

  • The EMAC RX should Accept packets with wrong CRC
  • Default value: false
  • Symbol LINK_ACCEPT_CRC_ERROR, DRV_EMACn_RX_FILTERS

• Accept maximum frame size packets:

  • The EMAC should accept maximum size frame packets
  • Default value: false
  • Symbol LINK_ACCEPT_MAX_FRAME_SIZE_PACKETS,DRV_EMACn_RX_FILTERS

• Accept Packets with Frame Error:

  • The EMAC should accept packets with frame error
  • Default value: false
  • Symbol LINK_ACCEPT_FRAME_ERROR, DRV_EMACn_RX_FILTERS

• Accept Jumbo Packets:

  • The EMAC should accept jumbo packets
  • Default value: false
  • Symbol LINK_ACCEPT_JUMBO_FRAME, DRV_EMACn_RX_FILTERS

• Promiscuous mode enable:

  • Allow the receiving of not me unicast packets (promiscuous mode)
  • Default value: false
  • Symbol LINK_ACCEPT_ALL, DRV_EMACn_RX_FILTERS

• Auto negotiation enable:

  • Use auto-negotiation to select the link speed and duplex
  • Default value: true
  • Symbol LINK_AUTO_NEGOTIATION

• Allow full duplex:

  • Use full-duplex on the link
  • Default value: true
  • Symbol LINK_AUTO_FULL_DUPLEX

• Allow half duplex:

  • Use half-duplex on the link
  • Default value: true
  • Symbol LINK_AUTO_HALF_DUPLEX

• Allow 100MBps:

  • Use 100 Mbps on the link
  • Default value: true
  • Symbol LINK_AUTO_100

• Allow 10MBps:

  • Use 10 Mbps on the link
  • Default value: true
  • Symbol LINK_AUTO_10

• Manual link type:

  • Allow manual selection of the link parameters
  • Select one of:
    • Full Duplex, 100 Mbps
    • Full Duplex, 10 Mbps
    • Half Duplex, 100 Mbps
    • Half Duplex, 10 Mbps
  • Default value: "Full Duplex, 100 Mbps"
  • Symbol LINK_MANUAL_CHOICE

• Allow Huge Packets:

  • Allow the transfer of huge/jumbo packets
  • Default value: false
  • Symbol ALLOW_HUGE_PACKETS

• MDIX auto enable:

  • Use Auto MDIX on the link
  • Default value: true
  • Symbol MDIX_AUTO_ENABLE

• MDIX swapped:

  • Swap the MDIX wires
  • Default value: false
  • Symbol MDIX_SWAP

• MAC level loop back:

  • Enable EMAC loopback
  • Default value: false
  • Symbol MAC_LOOPBACK

• PHY level loop back:

  • Enable PHY loopback
  • Default value: false
  • Symbol PHY_LOOPBACK

• Use RMII:

  • Use RMII EMAC <-> PHY connection (otherwise MII)
  • Default value: true
  • Symbol USE_RMII

• External PHY Device:

  • The external PHY connected to the EMAC device
  • Default value: ""
  • Symbol DRV_MAC_PHY_TYPE

• EMAC Heap Size (bytes):

  • Estimation of the heap size taken by the EMAC driver
  • Default value: none
  • Symbol DRV_EMAC_HEAP_SIZE