VI Copy Engine Controller: L1Cache - L2Cache - Directory - DMA - AccelL1Cache - AccelL2Cache - GPUCopyDMA - CrossingGuard

ReadRequest WriteRequest Data Ack
READY v r p / BUSY RD v s p / BUSY WR     READY
BUSY RD z z d w p / READY   BUSY RD
BUSY WR z z   s w p / READY BUSY WR
ReadRequest WriteRequest Data Ack