mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 36

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

NXP Semiconductors
112132
Product data sheet
9.2.3.8 CWGsPReg
9.2.3.9 ModGsPReg
Defines the conductance of the P-driver during times of no modulation
Table 87:
Table 88:
Defines the driver P-output conductance during modulation.
Table 89:
Table 90:
Bit
7 to 6
5 to 0
Bit
7 to 6
5 to 0
Symbol
Access
Symbol
Access
Rights
Rights
Bit
Bit
Symbol
-
CWGsP
Symbol
-
ModGsP
Description of CWGsPReg bits
ModGsPReg register (address 29h); reset value: 20h
Description of ModGsPReg bits
CWGsPReg register (address 28h); reset value: 20h
7
7
RFU
RFU
-
-
Rev. 3.2 — 22 May 2007
6
6
Description
Reserved for future use.
The value of this register defines the conductance of the output
P-driver. This may be used to regulate the output power and
subsequently current consumption and operating distance.
Remark: The conductance value is binary weighted.
Description
Reserved for future use.
The value of this register defines the conductance of the output
P-driver for the time of modulation. This may be used to regulate the
modulation index.
Remark: The conductance value is binary weighted.
5
5
During soft Power-down mode the highest bit is forced to 1.
During soft Power-down mode the highest bit is forced to 1.
If Force100ASK is set to logic 1, the value of ModGsP has
no effect.
4
4
3
3
ModGsP
CWGsP
r/w
r/w
2
2
Contactless Reader IC
MFRC522
© NXP B.V. 2007. All rights reserved.
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