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LRI64 Datasheet(PDF) 20 Page - STMicroelectronics |
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LRI64 Datasheet(HTML) 20 Page - STMicroelectronics |
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20 / 38 page ![]() LRI64 20/38 COMMANDS CODES The LRI64 supports the command codes listed in Table 9. Table 9. Command Codes Inventory When receiving the Inventory request, the LRI64 performs the anti-collision sequence. The Inventory_flag is set to 1. The meanings of Flags 5 to 8 is as described in Table 5. The Request Frame (Figure 23.) contains: – Request Flags (Table 3. and Table 5.) – Inventory Command Code (01h, Table 9.) – AFI, if the AFI Flag is set – Mask Length – Mask Value – 2-byte CRC (Figure 16.) In case of errors in the Inventory request frame, the LRI64 does not generate any answer. The Response Frame (Figure 24.) contains: – Response Flags (Table 6.) –DSFID – Unique ID – 2-byte CRC (Figure 16.) Figure 23. Inventory, Request Frame Format Figure 24. Inventory, Response Frame Format Command Code Function 01h Inventory 02h Stay Quiet 20h Read Single Block 21h Write Single Block 2Bh Get System Info AI09729 Request SOF Request Flags Command Code Optional AFI Mask Value 2-Byte CRC Request EOF 8 bits 8 bits 01h 8 bits 0 to 8 bytes 16 bits Mask Length 8 bits AI09730 Response SOF Response Flags DSFID 2-Byte CRC Response EOF 8 bits 8 bits 16 bits UID 64 bits |
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