Inicore Inc.

VMESmodule

VME Slave Controller Core

The VMESmodule is a complete VME Slave Controller core bridging the VME bus and the local bus. The core contains a VME Slave, a VME interrupter, mailbox and semaphore registers, a local interrupt controller, provisioning for CR/CSR, and a generic local bus interface.

The VMESmodule is a building block for your custom VME slave design. The synchronous local bus interface eases system integration while the VME slave bridge already contains all necessary functions and features of a VME slave controller.

With this reach feature set, the VMESmodule is an excellent platform to base all your future Slave VME designs on.

Block Diagram

Features

Slave Interface

• Addressing modes: A16, A24, A32
• Data types: D8(EO), D16, D32, D32-BLT, D64-MBLT
• Access modes: Read, write, read-modify-write
• Selectable rescinding DTACK
• 8 slave windows with address translation

Interrupter

• D08(O) interrupt status vector
• Software interrupt request (ROAK)
• User interrupt request (RORA)
• Programmable interrupt level

System CR/CSR

• Contains address decoding for CR/CSR space
• Accessible via VME and local bus
• Local status and configuration registers for
  • Interrupter
  • Slave memory window configuration
• Special functions
  • 4 32-bit mailbox registers
  • 4 8-bit semaphores
  • Local interrupt controller
  • VME interrupt controller

Local Bus Interface

Fully synchronous bus interface for user logic User selectable wait-states Optional big-endian to little-endian conversion