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ST25TV02K 数据表(PDF) 59 Page - STMicroelectronics |
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ST25TV02K 数据表(HTML) 59 Page - STMicroelectronics |
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59 / 90 page  6.4.27 Lock EAS The EAS ID, the Telegram, the EAS telegram and EAS mode (reset/set) configuration can be locked definitively with the lock_EAS command. It is not possible to unlock these EAS states once locked (even if presenting the configuration password). If the EAS configuration is password protected, the configuration password has to be first presented for the lock to be performed The lock_single_block command is not authorized on the EAS telegram blocks and will return an error. Table 112. Lock EAS request format Request SOF Request_flags Lock EAS IC Mfg code UID (1) CRC16 request EOF - 8 bits A4h 02h 64 bits 16 bits - 1. The field is optional. Request parameters: • Request flags • UID (optional) Table 113. Lock EAS response format when Error_flag is NOT set Response SOF Response_flags CRC16 request EOF - 8 bits 16 bits - Response parameter: • No parameter Table 114. Lock EAS response format when Error_flag is set Response SOF Response_flags Error code CRC16 EOF - 8 bits 8 bits 16 bits - Response parameter: • Error code as Error_flag is set – 03h: command option is not supported – 11h: the configuration is already locked and thus cannot be locked again – 12h: the configuration cannot be changed as either the security session is closed, or locked – 13h: the configuration could not be successfully programmed 6.4.28 Write EAS ID This command writes a new EAS ID (16 bits words stored in the configuration area) If the EAS parameters are protected by the configuration password then the command can be executed only if the configuration password has been successfully presented earlier in the same session. If EAS is locked, the command is not authorized and the ST25TV02K/512 will return an error. Table 115. Write EAS ID request format Request SOF Request_flags Write EAS ID IC Mfg code UID (1) EAS ID CRC16 request EOF - 8 bits A7h 02h 64 bits 16 bits 16 bits - 1. The field is optional. Request parameters: ST25TV02K ST25TV512 RF commands DS12074 - Rev 11 page 59/90 |
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