MN63Y1208 Datasheet, PDF (61/120 Pages) Panasonic Semiconductor – Built-in 4-Kbit FeRAM non-volatile memory with fast write and low power consumption

Chapter 4 RF Communication Mode
4.3.9.1 REQB/WUPB
„ Purpose
Identifies the RFID. Used by reader/writer
x REQB is used when the RFID is in IDLE state.
x WUPB is used when the RFID is in HALT state. (It can be also used in IDLE state.)
„ Command message
z Format
Command code
1 byte
AFI
1 byte
PARAM
1 byte
CRC_B
2 bytes
z Data field
Field
Command code
AFI
PARAM
CRC_B
Setting
0x05
0x00: Identifies all RFIDs.
0xY0: RFID whose upper 4 bits are identified
responds.
0x0Y: RFID whose lower 4 bits are identified
responds.
Other than 0x00: RFID corresponding to the
specified system code responds.
0x00: REQB
0x08: WUPB
Bits 7-5 RFU (Set to 000b.)
Bit 4
0: Extension ATQB not supported
1: Extension ATQB supported
Bit 3
0: REQB
1: WUPB
Bits 2-0
000b: Slot count N = 1
001b: Slot count N = 2
010b: Slot count N = 4
011b: Slot count N = 8
100b: Slot count N = 16
101b: RFU
110b: RFU
See CRC_B ISO/IEC14443-3.
Remarks
See 4.3.8.1 AFI (Application
Family Identifier).
This RFID always operates as
follows:
x Ignores the setting of bits
7-5.
x Recognizes the number N of
Slots is 1 (always responds
with ATQB) even when bits
2-0 are set to any of the
values (including PFU).
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