Product data

MFRC631 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.3 — 4 February 2014
227433 97 of 120
NXP Semiconductors
MFRC631
High performance ISO/IEC 14443 A/B reader solution
9.15 Pin configuration
9.15.1 PinEn
9.15.2 PinOut
Table 180. LPCD_Q_Result bits
Bit Symbol Description
7RFU -
6 LPCD_Irq_Clr If set no LPCD IRQ is raised any more until the next low-power
card detection procedure. Can be used by software to clear the
interrupt source.
5 to 0 LPCD_Result_Q Shows the result of the last ow power card detection (Q-Channel).
Table 181. PinEn register (address 44h)
Bit 7 6 5 4 3 2 1 0
Symbol SIGIN_EN CLKOUT_EN IFSEL1_EN IFSEL0_EN TCK_EN TMS_EN TDI_EN TMDO_EN
Access
rights
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Table 182. PinEn bits
Bit Symbol Description
7 SIGIN_EN Enables the output functionality on SIGIN (pin 5). The pin is then used
as I/O.
6 CLKOUT_EN Enables the output functionality of the CLKOUT (pin 22). The pin is
then used as I/O. The CLKOUT function is switched off.
5 IFSEL1_EN Enables the output functionality of the IFSEL1 (pin 27). The pin is then
used as I/O.
4 IFSEL0_EN Enables the output functionality of the IFSEL0 (pin 26). The pin is then
used as I/O.
3 TCK_EN Enables the output functionality of the TCK (pin 4) of the boundary
scan interface. The pin is then used as I/O. If the boundary scan is
activated in EEPROM, this bit has no function.
2 TMS_EN Enables the output functionality of the TMS (pin 2) of the boundary
scan interface. The pin is then used as I/O. If the boundary scan is
activated in EEPROM, this bit has no function.
1 TDI_EN Enables the output functionality of the TDI (pin 1) of the boundary scan
interface. The pin is then used as I/O. If the boundary scan is activated
in EEPROM, this bit has no function.
0 TDO_EN Enables the output functionality of the TDO(pin 3) of the boundary
scan interface. The pin is then used as I/O. If the boundary scan is
activated in EEPROM, this bit has no function.
Table 183. PinOut register (address 45h)
Bit 7 6 5 4 3 2 1 0
Symbol SIGIN_OUT CLKOUT_OUT IFSEL1_OUT IFSEL0_OUT TCK_OU
T
TMS_OU
T
TDI_OUT TDO_OUT
Access
rights
r/w r/w r/w r/w r/w r/w r/w r/w