Datasheet

PN532_C1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.6 — 28 November 2017
115436 177 of 222
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
8.6.23.38 CIU_CWGsP register (6318h)
Defines the conductance of the P-driver.
8.6.23.39 CIU_ModGsP register (6319h)
Defines the driver P-output conductance for the time of modulation.
Table 248. CIU_CWGsP register (address 6318h) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol - - CWGsP[5:0]
Reset 00100000
Access R R R/W R/W R/W R/W R/W R/W
Table 249. Description of CIU_CWGsP bits
Bit Symbol Description
7 to 6 - Reserved.
5 to 0 CWGsP[5:0] The value of this register defines the conductance of the output P-driver,
during times of no modulation.
This may be used to regulate the output power and subsequently current
consumption and operating distance.
Note: The conductance value is binary weighted.
Note: During CIU Power-down mode, if DriverSel[1:0] is not equal to 01b,
CWGsP[5] is set to logic 1. This is not readable in the register.
Table 250. CIU_ModGsP register (address 6319h) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol - - ModGsP[5:0]
Reset 00100000
Access R R R/W R/W R/W R/W R/W R/W
Table 251. Description of CIU_ModGsP bits
Bit Symbol Description
7 to 6 - Reserved.
5 to 0 ModGsP[5:0] 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.
Note: The conductance value is binary weighted.
Note: During CIU Power-down mode, if DriverSel[1:0] is not equal to 01b,
ModGsP[5] is set to logic 1. This is not readable in the register.
Note: If Force100ASK in CIU_TxAuto register is set to logic 1, the
ModGsP[5:0] setting has no effect.