參數(shù)資料
型號: MFRC53101T
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡(luò)
英文描述: ISO-IEC 14443 reader IC
封裝: MFRC53101T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 51, 2004,;MFRC53101T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<
文件頁數(shù): 65/116頁
文件大?。?/td> 862K
代理商: MFRC53101T
MFRC531_34
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.4 — 26 January 2010
056634
65 of 116
NXP Semiconductors
MFRC531
ISO/IEC 14443 reader IC
10.5.5
Page 4: RF Timing and channel redundancy
10.5.5.1
Page register
Selects the page register; see
Section 10.5.1.1 “Page register” on page 48
.
10.5.5.2
RxWait register
Selects the time interval after transmission, before the receiver starts.
Table 96.
Bit
Symbol
Access
Table 97.
Bit
7 to 0
10.5.5.3
ChannelRedundancy register
Selects kind and mode of checking the data integrity on the RF channel.
Table 98.
Table 99.
Bit
7 to 6 00
5
RxWait register (address: 21h) reset value: 0000 0101b, 06h bit allocation
7
6
5
4
RxWait[7:0]
3
2
1
0
R/W
RxWait register bit descriptions
Symbol
RxWait[7:0]
Function
after data transmission, the activation of the receiver is delayed
for RxWait bit-clock cycles. During this frame guard time any
signal on pin RX is ignored.
ChannelRedundancy register (address: 22h) reset value: 0000 0011b, 03h bit
allocation
7
6
5
4
00
CRC3309
CRC8
RxCRCEn TxCRCEn ParityOdd
R/W
R/W
R/W
R/W
Bit
Symbol
Access
3
2
1
0
ParityEn
R/W
R/W
R/W
R/W
ChannelRedundancy bit descriptions
Symbol
Value
-
CRC3309
1
Function
this value must not be changed
CRC calculation is performed using ISO/IEC 3309
(ISO/IEC 14443 B)
CRC calculation is performed using ISO/IEC 14443 A
an 8-bit CRC is calculated
a 16-bit CRC is calculated
the last byte(s) of a received frame are interpreted as CRC bytes. If
the CRC is correct, the CRC bytes are not passed to the FIFO. If
the CRC bytes are incorrect, the CRCErr flag is set.
no CRC is expected
a CRC is calculated over the transmitted data and the CRC bytes
are appended to the data stream
no CRC is transmitted
0
1
0
1
4
CRC8
3
RxCRCEn
0
1
2
TxCRCEn
0
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