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LRI2K 数据表(PDF) 49 Page - STMicroelectronics |
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LRI2K 数据表(HTML) 49 Page - STMicroelectronics |
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49 / 89 page  LRI2K Commands codes 49/89 20.3 Read Single Block On receiving the Read Single Block Command, the LRI2K reads the requested block and sends back its 32 bits value in the response. The Option_Flag is supported. Request parameters: ● Option_Flag ● UID (Optional) ● Block Number Response parameter: ● Block Locking Status if Option_Flag is set (see Table 26: Block Locking status) ● 4 bytes of Block Data Response parameter: ● Error Code as Error_Flag is set: – 0Fh: other error – 10h: block address not available Table 24. Read Single Block request format Request SOF Request_flags Read Single Block UID Block number CRC16 Request EOF 8 bits 20h 64 bits 8 bits 16 bits Table 25. Read Single Block response format when Error_Flag is NOT set Response SOF Response_ Flags Block locking status Data CRC16 Response EOF 8 bits 8 bits 32 bits 16 bits Table 26. Block Locking status b7 b6 b5 b4 b3 b2 b1 b0 all 0 0: Current Block not locked 1: Current Block locked Table 27. Read Single Block response format when Error_Flag is set Response SOF Response_ Flags Error code CRC16 Response EOF 8 bits 8 bits 16 bits |
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