USB供电PowerDelivery
TYPE-C PD供电协议信号-4b5b编码对照表
2021-12-25
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PD供电协议编码格式是4b5b，即把4位的数据(0x0-0xf)编码成5位，其编码对照表见下图：
| 名称 | 4b | 5b Symbol | 描述 |
|---|---|---|---|
| 0 | 0 | 11110 | hex data 0 |
| 1 | 1 | 1001 | hex data 1 |
| 2 | 10 | 10100 | hex data 2 |
| 3 | 11 | 10101 | hex data 3 |
| 4 | 100 | 1010 | hex data 4 |
| 5 | 101 | 1011 | hex data 5 |
| 6 | 110 | 1110 | hex data 6 |
| 7 | 111 | 1111 | hex data 7 |
| 8 | 1000 | 10010 | hex data 8 |
| 9 | 1001 | 10011 | hex data 9 |
| A | 1010 | 10110 | hex data A |
| B | 1011 | 10111 | hex data B |
| C | 1100 | 11010 | hex data C |
| D | 1101 | 11011 | hex data D |
| E | 1110 | 11100 | hex data E |
| F | 1111 | 11101 | hex data F |
| Sync-1 | K-code | 11000 | Startsynch #1 |
| Sync-2 | K-code | 10001 | Startsynch #2 |
| RST-1 | K-code | 111 | Hard Reset #1 |
| RST-2 | K-code | 11001 | Hard Reset #2 |
| EOP | K-code | 1101 | EOP End Of Packet |
| Reserved | Error | 0 | Shall Not be used |
| Reserved | Error | 1 | Shall Not be used |
| Reserved | Error | 10 | Shall Not be used |
| Reserved | Error | 11 | Shall Not be used |
| Reserved | Error | 100 | Shall Not be used |
| Reserved | Error | 101 | Shall Not be used |
| Sync-3 | K-code | 110 | Startsynch #3 |
| Reserved | Error | 1000 | Shall Not be used |
| Reserved | Error | 1100 | Shall Not be used |
| Reserved | Error | 10000 | Shall Not be used |
| Reserved | Error | 11111 | Shall Not be used |
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