參數(shù)資料
型號(hào)： MFRC50001T
廠商： NXP Semiconductors N.V.
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： Highly integrated ISO-IEC 14443 A reader IC
封裝： MFRC50001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 15, 2005,;
文件頁(yè)數(shù)： 58/110頁(yè)
文件大?。?/td> 841K
代理商： MFRC50001T
MFRC500_33
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 15 March 2010
048033
58 of 110
NXP Semiconductors
MFRC500
Highly Integrated ISO/IEC 14443 A 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 43
.
10.5.5.2
RxWait register
Selects the time interval after transmission, before the receiver starts.
Table 91.
Bit
Symbol
Access
Table 92.
Bit
7 to 0
10.5.5.3
ChannelRedundancy register
Selects kind and mode of checking the data integrity on the RF channel.
Table 93.
Table 94.
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 and
ISO/IEC 15693
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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