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LRI2K датащи(PDF) 68 Page - STMicroelectronics |
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LRI2K датащи(HTML) 68 Page - STMicroelectronics |
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68 / 89 page ![]() Commands codes LRI2K 68/89 20.18 Fast Read Single Block On receiving the Fast Read Single Block command, the LRI2K reads the requested block and sends back its 32-bit value in the response. The Option_Flag is supported. The data rate of the response is multiplied by 2. Request parameters: ● Option_Flag ● UID (Optional) ● Block Number Response parameter: ● Block Locking Status if Option_Flag is set ● 4 bytes of Block Data Response parameter: ● Error code as Error_Flag is set: – 0Fh: other error – 10h: block address not available Table 72. Fast Read Single Block request format Request SOF Request_ Flags Fast Read Single Block IC Mfg code UID Block number CRC16 Request EOF 8 bits C0h 02h 64 bits 8 bits 16 bits Table 73. Fast 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 74. Block Locking status b7 b6 b5 b4 b3 b2 b1 b0 All 0 0: Current Block not locked 1: Current Block locked Table 75. Fast 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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