Chiplet system and method for communicating between chiplets in chiplet system
The present disclosure relates to a method for communicating between chiplets in a chiplet system. The chiplet system includes a first chiplet and a second chiplet, and the method includes, by the first chiplet, generating a die-to-die interface flit from a first protocol type transaction based on conversion information, by the first chiplet, transmitting the die-to-die interface flit to the second chiplet, and, by the second chiplet, generating a second protocol type transaction from the die-to-die interface flit based on the conversion information.
1. A method for communicating between chiplets in a chiplet system, wherein the chiplet system includes a first chiplet and a second chiplet, the method comprising:
by the first chiplet, generating a die-to-die interface flit from a first protocol type transaction based on conversion information;
by the first chiplet, transmitting the die-to-die interface flit to the second chiplet; and
by the second chiplet, generating a second protocol type transaction from the die-to-die interface flit based on the conversion information,
wherein the conversion information includes information on a packet ID, a payload type code, a payload type size, and a payload size.
2. The method according to claim 1 , wherein
the first chiplet includes a controller including a protocol layer and an adapter layer, and
the generating by the first chiplet the die-to-die interface flit from the first protocol type transaction based on the conversion information includes:
by the protocol layer of the first chiplet, generating a payload of the die-to-die interface flit from the first protocol type transaction based on the conversion information;
by the adapter layer of the first chiplet, generating a header of the die-to-die interface flit; and
by the adapter layer of the first chiplet, generating the die-to-die interface flit by combining the header and the payload.
3. The method according to claim 1 , wherein
the first chiplet further includes a physical (PHY) layer, and
the transmitting by the first chiplet the die-to-die interface flit to the second chiplet includes:
by the adapter layer of the first chiplet, transmitting the die-to-die interface flit to the PHY layer of the first chiplet; and
by the PHY layer of the first chiplet, transmitting the die-to-die interface flit to the second chiplet.
4. The method according to claim 1 , before generating the die-to-die interface flit, further comprising, by the first chiplet and the second chiplet, exchanging the conversion information.
5. The method according to claim 1 , wherein the payload type code includes a write address code, a write data code, a write response code, a read address code, and a read data code.
6. The method according to claim 1 , wherein
the second chiplet includes a PHY layer, and
the transmitting by the first chiplet the die-to-die interface flit to the second chiplet includes, by the first chiplet, transmitting the die-to-die interface flit to the PHY layer of the second chiplet.
7. The method according to claim 1 , wherein
the second chiplet includes a controller including an adapter layer and a protocol layer, and
the generating by the second chiplet the second protocol type transaction from the die-to-die interface flit based on the conversion information includes:
by the adapter layer of the second chiplet, extracting a payload of the die-to-die interface flit from the flit; and
by the protocol layer of the second chiplet, generating the second protocol type transaction from the payload.
8. The method according to claim 1 , wherein
the first protocol relates to the first chiplet,
the second protocol relates to the second chiplet, and
the first protocol and the second protocol are different from each other.
9. The method according to claim 1 , wherein
the first chiplet and the second chiplet are designed based on universal chiplet interconnect express (UCIe) standard, and
the die-to-die interface flit includes a UCIe flit.
10. A chiplet system, wherein
the chiplet system includes a first chiplet and a second chiplet,
the first chiplet is configured to generate a die-to-die interface flit from a first protocol type transaction based on conversion information, and transmit the die-to-die interface flit to the second chiplet, and
the second chiplet is configured to generate a second protocol type transaction from the die-to-die interface flit based on the conversion information,
wherein the conversion information includes information on a packet ID, a payload type code, a payload type size, and a payload size.
11. The chiplet system according to claim 10 , wherein
the first chiplet includes a controller including a protocol layer and an adapter layer, and
the generating the die-to-die interface flit from the first protocol type transaction based on the conversion information includes:
by the protocol layer of the first chiplet, generating a payload of the die-to-die interface flit from the first protocol type transaction based on the conversion information;
by the adapter layer of the first chiplet, generating a header of the die-to-die interface flit; and
by the adapter layer of the first chiplet, generating the die-to-die interface flit by combining the header and the payload.
12. The chiplet system according to claim 10 , wherein
the first chiplet further includes a PHY layer, and
the transmitting the die-to-die interface flit to the second chiplet includes:
by the adapter layer of the first chiplet, transmitting the die-to-die interface flit to the PHY layer of the first chiplet; and
by the PHY layer of the first chiplet, transmitting the die-to-die interface flit to the second chiplet.
13. The chiplet system according to claim 10 , wherein, before generating the die-to-die interface flit, the first chiplet and the second chiplet exchange the conversion information.
14. The chiplet system according to claim 10 , wherein the payload type code includes a write address code, a write data code, a write response code, a read address code, and a read data code.
15. The chiplet system according to claim 10 , wherein
the second chiplet includes a PHY layer, and
the transmitting the die-to-die interface flit to the second chiplet includes transmitting the die-to-die interface flit to the PHY layer of the second chiplet.
16. The chiplet system according to claim 10 , wherein
the second chiplet includes a controller including an adapter layer and a protocol layer, and
the generating the second protocol type transaction from the die-to-die interface flit based on the conversion information includes:
by the adapter layer of the second chiplet, extracting a payload of the die-to-die interface flit from the flit; and
by the protocol layer of the second chiplet, generating a second protocol type transaction from the payload.
17. The chiplet system according to claim 10 , wherein
the first protocol relates to the first chiplet,
the second protocol relates to the second chiplet, and
the first protocol and the second protocol are different from each other.
18. The chiplet system according to claim 10 , wherein
the first chiplet and the second chiplet are designed based on the universal chiplet interconnect express (UCIe) standard, and
the die-to-die interface flit includes a UCIe flit.