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ST25TA64K датащи(PDF) 35 Page - STMicroelectronics |
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ST25TA64K датащи(HTML) 35 Page - STMicroelectronics |
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35 / 45 page ![]() DocID027764 Rev 1 35/45 ST25TA64K RF command sets 42 The FSDI field codes the FSD that defines the maximum size that an RF host is able to receive. Table 46 gives the conversion from FDSI to FSD. The DID field defines the value of the addressed ST25TA64K. The FSCI codes the FSC which stands for the maximum frame size that the ST25TA64K is able to receive. The ST25TA64K is able to receive up to 256 bytes of command. If the RF host sends a command with more than 256 bytes, the ST25TA64K will not be able to treat the command and will not reply. The FWI which stands for the Frame Waiting time Integer codes the FWT. This time corresponds to the maximum duration while an RF host shall send before sending the next command. Table 45. RATS command Name INS Param CRC Byte field 0xE0 1 byte 2 bytes Bit field - b7-b4 b3-b0 - Instruction code FSDI DID (0 ≤ DID ≤ 14) 2 CRC bytes Table 46. Conversion from FDSI to FSD FSDI 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9h- 0xE 0xF FSD 16 24 32 40 48 64 96 128 256 RFU 256 Table 47. ATS response Name TL T0 TA(1) TB(1) TC(1) CRC Byte field 0x05 0x78 1 byte 1 byte 0x02 2 bytes Bit field - - - b8-b5 b4-b1 - - Length of the ATS response FSCI = 256 bytes The maximum ascending data rate is 106 kbps The maximum descending data rate is 106 kbps FWI field (155 ms when TB = 0x90) SFGI field (302 µs when TB = 0x90) The DID is supported 2 CRC bytes |
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