9/10/2023 0 Comments Cxl cache coherence![]() ĬXL 3.0 introduces 256-byte FLIT in PAM-4 transfer mode.ĬXL is designed to support three primary device types: Layer Packet (DLLP) data with a variable frame size format. CXL FLITs encapsulate PCIe standard Transaction Layer Packet (TLP) and Data Link These protocols/layers are multiplexed together by an Arbitration and Multiplexing (ARB/MUX) block before being transported over standard PCIe 5.0 PHY using fixed-width 528 bit (66 byte) Flow Control Unit (FLIT) block consisting of four 16-byte data 'slots' and a two-byte cyclic redundancy check (CRC) value.
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