mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 24

• Manufacturer Part Number: mfrc522
• Description: Contactless Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
112132
Product data sheet
9.2.1.16 Reserved
9.2.2.1 Reserved
9.2.2 Page 1: Communication
Table 36:
Functionality is reserved for further use.
Table 37:
Table 38:
Functionality is reserved for further use.
Table 39:
Table 40:
Bit
4 to 0
Bit
7 to 0
Bit
7 to 0
Symbol
Symbol
Access
Access
Rights
Rights
Bit
Bit
Symbol
CollPos
Symbol
-
Symbol
-
Description of CollReg bits
Reserved register (address 0Fh); reset value: 00h
Description of Reserved register bits
Reserved register (address 10h); reset value: 00h
Description of Reserved register bits
7
7
Rev. 3.2 — 22 May 2007
6
6
Description
These bits show the bit position of the first detected collision in a
received frame. Only data bits are interpreted.
Example:
00h
01h
08h
These bits shall only be interpreted if bit CollPosNotValid is set to
logic 0.
Description
Reserved for future use.
Description
Reserved for future use.
indicates a bit collision in the 32
indicates a bit collision in the 1
indicates a bit collision in the 8
5
5
4
4
RFU
RFU
-
-
3
3
st
th
nd
bit
bit
bit
2
2
Contactless Reader IC
MFRC522
© NXP B.V. 2007. All rights reserved.
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