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 86 of 120
NXP Semiconductors
MFRC631
High performance ISO/IEC 14443 A/B reader solution
9.10.3 TxSym10BurstLen
If a protocol requires a burst (an unmodulated subcarrier) the length can be defined with
this TxSymBurstLen, the value high or low can be defined by TxSym10BurstCtrl.
9.10.4 TxWaitCtrl
Table 139. TxSym10BurstLen register (address 30h)
Bit 7 6 5 4 3 2 1 0
Symbol RFU Sym1Burst Len RFU Sym0Burst Len
Access
rights
- r/w - r/w
Table 140. TxSym10BurstLen bits
Bit Symbol Description
7RFU -
6 to 4 Sym1BurstLen Specifies the number of bits issued for symbol 1 burst. The 3 bits
encodes a range from 8 to 256 bit:
00h - 8bit
01h - 16bit
02h - 32bit
04h - 48bit
05h - 64bit
06h - 96bit
07h - 128bit
08h - 256bit
3RFU -
2 to 0 Sym0BurstLen Specifies the number of bits issued for symbol 1 burst. The 3 bits
encodes a range from 8 to 256 bit:
00h - 8bit
01h - 16bit
02h - 32bit
03h - 48bit
04h - 64bit
05h - 96bit
06h - 128bit
07h - 256bit
Table 141. TxWaitCtrl register (address 31h); reset value: C0h
Bit 7 6 5 4 3 2 1 0
Symbol TxWaitStart TxWaitEtu TxWait High TxStopBitLength
Access
rights
r/w r/w r/w r/w