Comparison of Classical CAN, CAN FD, and CAN XL and CAN XL and Ethernet 10BASE-T1S
https://www.bosch-semiconductors.com/media/ip_modules/pdf_2/can_xl_1/20220825_can_xl_vs_10base-t1s_v2.pdf
Comparison of Classical CAN, CAN FD, and CAN XL and CAN XL
https://qiita.com/kaizen_nagoya/items/773835b2bf3cddd17dd8
Comparison of CAN XL & 10BASE-T1S
Functionality on Layer 1 and Layer 2
| Property | CAN XL | 10BASE-T1S |
|---|---|---|
| Data Field | [1 ... 2048 byte] (byte granularity) | [46 ... 1500 byte] (byte granularity) |
| Frame Priority | 11 bit (Priority Identifier) | 3 bit (802.1Q Header PCP [Priority Code Point]) |
| Bus Access | CSMA/CR (Arbitration) | PLCA (Round Robin) or CSMA/CD (Collision Detection) |
| Addressing | 32 bit (Acceptance Field), e.g. holds Message ID | 2x48 bit (Source/Destination MAC Address) |
| Virtual Network Support | 8 bit (VCAN ID) | 12 bit (VLAN ID) |
| Payload Content Indication | 8 bit (SDU Type) | 16 bit (EtherType) |
| CRC | PCRC: 13 bit (HD=6) | FCRC: 32 bit (HD=6, outperforms Flexray & Ethernet) |
| Frame Check Sequence (FCS): 32 bit | CRC polynomial with limited performance [link] | |
| (HD=4 from 351 byte to 1518 byte frame length) | ||
| Line Coding on Bus | NRZ (non-return-to-zero) + Stuff Bits | 4B/5B coding |
| - dynamic bit stuffing (arbitration field) | DME (Differential Manchester Encoding) | |
| - fixed bit stuffing (data phase, 1 stuff bit after 10 bit) | ||
| Line Coding Overhead | 1 out of 11 bit = 1/11 = 9 % | 1 out of 5 bit = 1/5 = 20 % |
| Frequency (shortest Pulse) on wire | 6,1 MHz (81.25 ns) @ 12.3 Mbit/s in Data Phase | 12.5 MHz (40 ns) due to DME |
| 8,0 MHz (62.50 ns) @ 16.0 Mbit/s in Data Phase | ||
| Gross Bit Rate on wire | Arbitration phase bit rate: [0 ... 1 Mbit/s] | 12.5 MHz Symbol Rate (1 symbol = DME encoded bit) |
| Data phase bit rate: [2x arb. bit rate ... 20 Mbit/s] |
Related Article on Qiita
CAN FD and CAN XL on arXiv
https://qiita.com/kaizen_nagoya/items/d8efb0da53cd3456f735
CAN FD & CAN XL on arXiv references
https://qiita.com/kaizen_nagoya/items/7df86c66084372a96f1d
CAN FD & CAN XL on arXiv references name order
https://qiita.com/kaizen_nagoya/items/ec5e4e4491228db534c0
Comparison of CAN XL & 10BASE-T1S Functionality on Layer 1 and Layer 2
https://qiita.com/kaizen_nagoya/items/13235743ba8d7193a53b