MN63Y1208 Datasheet, PDF (80/120 Pages) Panasonic Semiconductor – Built-in 4-Kbit FeRAM non-volatile memory with fast write and low power consumption

Chapter 5 Serial Communication Mode
5.2.5.3 RREG
„ Purpose
Reads an RFID control data and interrupt source from the host.
„ Command message
z Format
Command code
1 byte
z Data field
Field
Command code
0x68
Setting
„ Response message
z Format
Status
1 byte
Data
1 byte
z Data field
Field
Status
Data
Output value
See 5.2.4 Status.
Bit 7 Reserved (Fixed at 0)
Bit 6
Masks RF communication detect
interrupt.
Bit 5 Masks magnet-field detect interrupt.
Bit 4 Stops RF communication.
Bit 3
Dectects magnetic field.
0: Not detected (with no RF carrier)
1: Detected (with RF carrier)
Bits 2-1 Reserved (Fixed at 0)
Bit 0
BCC error
0: None
1: BCC error
Remarks
Remarks
Set by the WREG command.
Set by the WREG command.
Set by the WREG command.
This bit is valid when
magnetic-field detect interrupt
is enabled with the system
area HW2 parameter's
IRQSEL specified.
Reads the BCC check results
for values of the system area.
For BCC check, see the
Administrator's Manual.
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