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 99 of 120
NXP Semiconductors
MFRC631
High performance ISO/IEC 14443 A/B reader solution
9.16 Version register
9.16.1 Version
Table 188. SigOut bits
Bit Symbol Description
7 PadSpeed If set, the I/O pins are supporting a fast switching mode.The fast mode
for the I/O’s will increase the peak current consumption of the device,
especially if multiple I/Os are switching at the same time. The power
supply needs to be designed to deliver this peak currents.
6 to 4 RFU -
3 to 0 SIGOutSel 0h, 1h - The pin SIGOUT is 3-state
2h - The pin SIGOUT is 0
3h - The pin SIGOUT is 1
4h - The pin SIGOUT shows the TX-envelope
5h - The pin SIGOUT shows the TX-active signal
6h - The pin SIGOUT shows the S3C (generic) signal
7h - The pin SIGOUT shows the RX-envelope
(only valid for ISO/IEC 14443A, 106 kBd)
8h - The pin SIGOUT shows the RX-active signal
9h - The pin SIGOUT shows the RX-bit signal
Table 189. Version register (address 7Fh)
Bit 7 6 5 4 3 2 1 0
Symbol Version SubVersion
Access
rights
rr
Table 190. Version bits
Bit Symbol Description
7 to 4 Version Includes the version of the MFRC631 silicon.
3 to 0 SubVersion Includes the subversion of the MFRC631 silicon.