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MB89R112 датащи(PDF) 12 Page - RAMXEED LIMITED |
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MB89R112 датащи(HTML) 12 Page - RAMXEED LIMITED |
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12 / 49 page ![]() MB89R112 12 DS411-00004-3v0-E 6. Request Format The following figure shows a typical example of the request data format, and the following table shows the definition of request flag bits. Setting of Bit 1 to Bit 4 * : Reserved for future use Note : “Inventory_flag” of bit 3 is determined whether “Inventory command” (select “1”) or other command (select “0”) is used. Setting of Bit 5 to Bit 8 (When Inventory command is selected [Inventory_flag = “1”]) * : Reserved for future use Setting of Bit 5 to Bit 8 (When the command other than Inventory command is selected [Inventory_flag = “0”]) * : Reserved for future use Bit Flag name 1/0 State/Description 1 Sub-carrier_flag 0 1-subcarrier selected 1 2-subcarrier selected (not supported) 2 Data_rate_flag 0 Low data rate (6.62 kbps) selected 1 High data rate (26.48 kbps) selected 3 Inventory_flag 0 Command other than Inventory command selected 1 Inventory command selected 4 Protocol_Extension_flag 0 Protocol not extended 1 Protocol extended (RFU*) Bit Flag name 1/0 State/Description 5 AFI_flag 0 AFI not set 1 AFI set (response when it is in accord with AFI of the transponder) 6 Nb_slots_flag 0 16 slots 1 1 slot 7 Option_flag 0 Command option not supported 1 Command option supported (not supported) 8 RFU* 0 Set to “0” 1 Bit Flag name 1/0 State/Description 5 Select_flag 0 Request shall be executed according to the setting of Address_flag. 1 Select mode (Request shall be executed only by the transpon- der in select state.) The Address_flag shall be set to “0”. 6 Address_flag 0 Non-Addressed mode (UID not included in the command) 1 Addressed mode (UID included in the command) 7 Option_flag 0 Command option not supported (for the command not supporting the Option_flag) 1 Command option supported 8 RFU* 0 Set to “0” 1 SOF CRC EOF Flag Command code Parameter Data Structure of the request frame |
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