Slave cores Etherbone Accessible device Etherbone Accessible device E B S UDP Computer Ether Bone Core Master controller Switch Rx M A C Ethernet Card + Driver UDP Etherbone Library Application Software UDP UDP Tx UDP Slave controller E B M Etherbone Accessible device Etherbone Accessible device Master cores

CPU M A C Slave Address Decoder Etherbone core Master controller Slave controller Dispatcher Master controller RX EBM wishbone bus Slave controller E B S Slave controller Slave controller Ethernet EBS wishbone bus Master controller Some core Interrupts IRQ core Master controller Slave Address Decoder Slave Address Decoder TX IRQ IO Master controller Init Master controller wishbone

Wishbone Initialize the MAC address Slave controller Transaction Area RAM and registers Internet Protocol UDP core W B Write EBM-bus Enable Rx Etherbone engine Tx Read M A C Rx ready Rx EBS-bus Write Read Master controller Rx Buffer Ram Tx Buffer Ram EB packets out EB packets in

Dispatcher Bus-1 Lock Bus-1 EBM-bus Bus-2 Bus-3