Research Article
An Easy-to-Integrate IP Design of AHB Slave Bus Interface for the Security Chip of IoT
Table 3
The function description of the SM4 control register.
| Bit | Operation | Type | Description |
| [1 : 0] | Data flag | R/W | 01: key 10: data to be encrypted 11: data to be decrypted 00: invalid input data | 2 | Data update | 0: no update 1: update | 3 | Reset control | 0: rset | [31 : 4] | Reserve | |
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