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MFRC522 データシート(PDF) 45 Page - NXP Semiconductors

部品番号 MFRC522
部品情報  Contactless reader IC
PDF  96 Pages
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メーカー  NXP [NXP Semiconductors]
ホームページ  http://www.nxp.com
Logo NXP - NXP Semiconductors

MFRC522 データシート(HTML) 45 Page - NXP Semiconductors

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MFRC522_33
© NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3 — 26 October 2009
112133
45 of 96
NXP Semiconductors
MFRC522
Contactless reader IC
9.3.1.16
Reserved register 0Fh
Functionality is reserved for future use.
9.3.2 Page 1: Communication
9.3.2.1
Reserved register 10h
Functionality is reserved for future use.
4 to 0 CollPos[4:0]
-
shows the bit position of the first detected collision in a
received frame
only data bits are interpreted
example:
00h
indicates a bit-collision in the 32nd bit
01h
indicates a bit-collision in the 1st bit
08h
indicates a bit-collision in the 8th bit
These bits will only be interpreted if the
CollPosNotValid bit is set to logic 0
Table 50.
CollReg register bit descriptions …continued
Bit
Symbol
Value Description
Table 51.
Reserved register (address 0Fh); reset value: 00h bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
reserved
Access
-
Table 52.
Reserved register bit descriptions
Bit
Symbol
Description
7 to 0
reserved
reserved for future use
Table 53.
Reserved register (address 10h); reset value: 00h bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
reserved
Access
-
Table 54.
Reserved register bit descriptions
Bit
Symbol
Description
7 to 0
reserved
reserved for future use



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