Distributed ring-based interconnect for register accessibility in a system-on-chip

A method for data communication in a system-on-chip (SoC), comprising:

• receiving, by a master request input port of a first router in the SoC, a register access request packet from an initiator;
• providing, by at least one of a first ring request output port of a first ring interface and a second ring request output port of a second ring interface, the register access request packet to a ring input end of one of a first register ring and a second register ring;
• receiving, by one of a first ring response input port of the first ring interface and a second ring response input port of the second ring interface, a register access response packet from a ring output end of one of the first register ring and the second register ring;
• and
• providing, by a master response output port of the first router, the register access response packet to the initiator.

A system-on-chip (SoC), comprising:

• a plurality of registers;
• a plurality of logic circuitry components configured to access the plurality of registers;
• and
• a first router, the first router having a master request input port configured to receive register access request packets from an initiator addressed to the plurality of registers and a master response output port configured to provide register access response packets to the initiator, the first router further having a first ring interface including a first ring request output port and a first ring response input port, the first router still further having a second ring interface including a second ring request output port and a second ring response input port;
• wherein the plurality of registers are included in a plurality of register rings including a first register ring and a second register ring, each register ring having at least one of the plurality of registers in a unidirectional data communication path between a ring input end and a ring output end, the ring input end of the first register ring coupled to the first ring request output port, the ring output end of the first register ring coupled to the first ring response input port, the ring input end of the second register ring coupled to the second ring request output port, the ring output end of the second register ring coupled to the second ring response input port.