mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 44

• Manufacturer Part Number: mfrc531
• Description: Iso/iec 14443 Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 37.
MFRC531_34
Product data sheet
PUBLIC
Sub
address
(Hex)
Page 4: RF Timing and channel redundancy
20h
21h
22h
23h
24h
25h
26h
27h
Page 5: FIFO, timer and IRQ pin configuration
28h
29h
2Ah
2Bh
2Ch
2Dh
2Eh
2Fh
Page 6: reserved registers
30h
31h
32h
33h
34h
35h
36h
37h
Page 7: Test control
38h
39h
3Ah
3Bh
3Ch
3Dh
3Eh
3Fh
Register name
Page
RxWait
ChannelRedundancy
CRCPresetLSB
CRCPresetMSB
PreSet25
MFOUTSelect
PreSet27
Page
FIFOLevel
TimerClock
TimerControl
TimerReload
IRQPinConfig
PreSet2E
PreSet2F
Page
reserved
reserved
reserved
reserved
reserved
reserved
reserved
Page
reserved
TestAnaSelect
reserved
reserved
TestDigiSelect
reserved
reserved
MFRC531 register overview
Function
selects the page register
selects the interval after transmission before the receiver starts
selects the method and mode used to check data integrity on
the RF channel
preset LSB value for the CRC register
preset MSB value for the CRC register
these values are not changed
selects internal signal applied to pin MFOUT, includes the MSB
of TimeSlotPeriod value; see
these values are not changed
selects the page register
defines the FIFO buffer overflow and underflow warning levels
selects the timer clock divider
selects the timer start and stop conditions
defines the timer preset value
configures pin IRQ output stage
these values are not changed
these values are not changed
selects the page register
reserved
reserved
reserved
reserved
reserved
reserved
reserved
selects the page register
reserved
selects analog test mode
reserved
reserved
selects digital test mode
reserved
reserved
…continued
Rev. 3.4 — 26 January 2010
056634
Table 105 on page 67
ISO/IEC 14443 reader IC
Refer to
Table 39 on page 48
Table 96 on page 65
Table 98 on page 65
Table 100 on page 66
Table 102 on page 66
Table 104 on page 66
Table 107 on page 67
Table 39 on page 48
Table 47 on page 50
Table 110 on page 68
Table 112 on page 69
Table 114 on page 69
Table 116 on page 70
Table 118 on page 70
Table 119 on page 70
Table 39 on page 48
Table 120 on page 70
Table 39 on page 48
Table 121 on page 71
Table 122 on page 71
Table 124 on page 72
Table 125 on page 72
Table 126 on page 72
Table 128 on page 73
MFRC531
© NXP B.V. 2010. All rights reserved.
44 of 116