You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
# A2 Interfaces to WB
|
|
|
|
|
|
|
|
|
|
* core interfaces
|
|
|
|
|
|
|
|
|
|
* A2I/A2O A2L2 bus
|
|
|
|
|
|
|
|
|
|
* Single (combined I/D) w/SMP extensions
|
|
|
|
|
|
|
|
|
|
* Dual (separate I/D) WB buses w/SMP extensions
|
|
|
|
|
|
|
|
|
|
* bus interface
|
|
|
|
|
|
|
|
|
|
* WB (non-SMP)
|
|
|
|
|
|
|
|
|
|
* functions
|
|
|
|
|
|
|
|
|
|
* arbitrates for WB bus
|
|
|
|
|
|
|
|
|
|
* queues one or more core commands
|
|
|
|
|
|
|
|
|
|
* point of coherncy for larx/stcx, sync, tlbie, etc. for multicores below it (single/mulithread)
|
|
|
|
|
|
|
|
|
|
* address compares necessary for ordering/coherency
|
|
|
|
|
|
|
|
|
|
* optional mailbox interface for core-core peer and broadcast
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Possible configurations
|
|
|
|
|
|
|
|
|
|
* one core, WB: pass-through with SMP functions
|
|
|
|
|
|
|
|
|
|
* one core, A2L2: bridge with SMP functions
|
|
|
|
|
|
|
|
|
|
* multi-core: bridge for A2L2, queueing, arbitration, and SMP functions
|
|
|
|
|
|
|
|
|
|
|
