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LRI64 数据表(PDF) 21 Page - STMicroelectronics |
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LRI64 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 38 page ![]() 21/38 LRI64 Stay Quiet The Stay Quiet Command is always executed in Addressed Mode (the Address_Flag is set to 1). The Request Frame (Figure 25.) contains: – Request Flags (22h, as described in Table 3. and Table 4.) – Stay Quiet Command Code (02h, Table 9.) – Unique ID – 2-byte CRC (Figure 16.) When receiving the Stay Quiet command, the LRI64 enters the Quiet State and does not send back a Response. There is no response to the Stay Quiet Command. When in the Quiet State: – the LRI64 does not process any Request in which the Inventory_flag is set – the LRI64 responds to commands in the Addressed mode if the UID matches The LRI64 exits the Quiet State when it is taken to the Power Off state (Figure 20.). Figure 25. Stay Quiet, Request Frame Format Figure 26. Stay Quiet Frame Exchange between VCD and LRI64 AI09731 Request SOF Request Flags Command Code 2-Byte CRC Request EOF 8 bits 22h 8 bits 02h 16 bits UID 64 bits AI06842 VCD SOF Stay Quiet Request EOF |
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