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DS90UB941AS-Q1: 941与948通信问题

Part Number: DS90UB941AS-Q1

请问下941 与 948如何通过I2C通信,  

1. Local I 2 C
2. Communicating with remote DES
3. Communicating with Remote slave attached to DES
4. Addressing Multiple DES with duplicate device ID
5. Addressing Multiple slaves with duplicate device ID

看文档中是这样说的

soc用通过941 读写 948的 0x55 具体是如何操作呢?