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ST25TB02K データシート(PDF) 28 Page - STMicroelectronics |
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ST25TB02K データシート(HTML) 28 Page - STMicroelectronics |
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28 / 47 page  8.6 Reset_to_inventory() command Command code = 0Ch On receiving the Reset_to_inventory() command, all ST25TB02K devices in Selected state revert to Inventory state. The concerned ST25TB02K devices are thus resubmitted to the anticollision sequence. This command is useful when two ST25TB02K devices with the same 8-bit Chip_ID happen to be in Selected state at the same time. Forcing them to go through the anticollision sequence again allows the reader to generates new Pcall16() commands and so, to set new random Chip_IDs. The Reset_to_inventory() command does not generate a response. All ST25TB02K devices that are not in Selected state ignore the Reset_to_inventory() command. Figure 33. Reset_to_inventory request format SOF RESET_TO_INVENTORY CRCL CRCH EOF 0Ch 8 bits 8 bits Request parameter: • No parameter Figure 34. Reset_to_inventory response format No Response Figure 35. Reset_to_inventory frame exchange between reader and ST25TB02K SOF 0Ch CRCL CRCH EOF Reader ST25TBxxx No Response ST25TB02K Reset_to_inventory() command DS11469 - Rev 7 page 28/47 |
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