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AS39513 Datasheet(PDF) 79 Page - ams AG |
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AS39513 Datasheet(HTML) 79 Page - ams AG |
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79 / 108 page  ams Datasheet Page 79 [v1-10] 2018-Apr-25 Document Feedback AS39513 − Detailed Description Get System Info Command Get System Info Command Request: Get System Info Command Reply: The system info command returns a number of the system parameters, including the UID, DSFID, AFI, memory size (MemSz), and chip revision (CHIPREV). The memory size is formatted in a two-byte word as shown below. Memory Size Format where: BLOCKCNT[7:0] – Number of memory blocks minus 1. 0xFF indicates 256 blocks, 0x00 indicates 1 block. BLOCKSZ[4:0] – Block size in bytes minus 1. 0x1F indicates a 32-byte block, 0x00 indicates a 1 byte block. The chip revision is an 8-bit value that is programmed in the EEPROM in production at the factory. SOF Flags Command UID CRC EOF NFLAGS 0x2B 64 bits 16 bits SOF Flags Info UID DSFID AFI MemSz CHIPREV CRC EOF RFLAGS 0x0F 64 bits 8 bits 8 bits 16 bits 8 bits 16 bits Bit 15 14 13 12 11 10 987 654 32 10 MemSz 0 0 0 BLOCKSZ[4:0] BLOCKCNT[7:0] |
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