The VMESCmodule is a VME to local bus bridge containing a VME slave with 4 memory window decoders, a VME master with integrated DMA engine, a programable VME interrupter supporting IRQ1-IRQ7 request levels, an autonomous VME interrupt handler, and a VME system controller. The system controller has a bus arbiter supporting prioritized and round-robin arbitration, a programmable bus timer, a system clock driver, a system reset driver, and an interrupt daisy-chain driver. System controller functionality can be enabled or disabled by using control inputs, or is automatically set when the controller is located in VME slot 1.
All these VME features are complemented by system features such as 4 32-bit mailboxes, 4 7-bit semaphores, interrupt controller, and configuration and status registers. A generic 32-bit wide user-side port connects to local registers and memories and provides access to the cores internal CR/CSR memory space.
With this rich feature set, the core can be used as a System Controller Module, as a Master Module, or as a Slave Module. This makes the VMESCmodule an excellent platform to base all your future VME designs on.
