mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 34

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

NXP Semiconductors
112132
Product data sheet
9.2.3.3 Reserved
9.2.3.4 ModWidthReg
9.2.3.5 Reserved
Functionality is reserved for further use.
Table 77:
Table 78:
Controls the setting of modulation width.
Table 79:
Table 80:
Functionality is reserved for further use.
Table 81:
Table 82:
Bit
7 to 0
Bit
7 to 0
Bit
7 to 0
Symbol
Access
Symbol
Access
Symbol
Access
Rights
Rights
Rights
Bit
Bit
Bit
Symbol
-
Symbol
ModWidth
Symbol
-
Reserved register (address 23h); reset value: 88h
Description of Reserved register bits
Description of ModWidthReg bits
Reserved register (address 25h); reset value: 87h
Description of Reserved register bits
ModWidthReg register (address 24h); reset value: 26h
7
7
7
Rev. 3.2 — 22 May 2007
6
6
6
Description
Reserved for future use.
Description
These bits define the width of the Miller modulation as multiples of the
carrier frequency (ModWidth +1/fc). The maximum value is half the bit
period.
Description
Reserved for future use.
5
5
5
4
4
4
ModWidth
RFU
RFU
r/w
-
-
3
3
3
2
2
2
Contactless Reader IC
MFRC522
© NXP B.V. 2007. All rights reserved.
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