Texas Instruments TRF7963A Manual page 45

www.ti.com
6.14.1.2 Protocol Subsetting Registers
6.14.1.2.1 ISO14443B TX Options Register (0x02)
Table 6-19 describes the bit fields of the ISO14443B TX Options register. This register selects the ISO
subsets for ISO/IEC 14443 B transmit.
Default Value: 0x00, set at POR = H or EN = L
BIT NO. BIT NAME
B7 egt2
B6 egt1
B5 egt0
B4 eof_l0
B3 sof_l1
B2 sof_l0
B1 l_egt
B0 Unused
6.14.1.2.2 ISO14443A High-Bit-Rate and Parity Options Register (0x03)
Table 6-20 describes the bit fields of the ISO14443A High-Bit-Rate and Parity Options register. This
register l the ISO subsets for ISO/IEC 14443 A transmit.
Default Value: 0x00, set at POR = H or EN = L and at each write to ISO Control register
Table 6-20. ISO14443A High-Bit-Rate and Parity Options Register (0x03)
BIT NO. BIT NAME
B7 dif_tx_br
B6 tx_br1
B5 tx_br0
B4 parity-2tx
B3 parity-2rx
B2 Unused
B1 Unused
B0 Unused
Copyright © 2011–2020, Texas Instruments Incorporated
Table 6-19. ISO14443B TX Options Register (0x02)
FUNCTION
TX EGT time select. B7 is the
MSB.
1 = EOF → 0 length 11 etu
0 = EOF → 0 length 10 etu
1 = SOF → 1 length 03 etu
0 = SOF → 1 length 02 etu
1 = SOF → 0 length 11 etu
0 = SOF → 0 length 10 etu
1 = EGT after each byte
0 = EGT after last byte is omitted
FUNCTION
TX bit rate different from RX bit
rate enable
TX bit rate
1 = Parity odd except last byte,
which is even for TX
1 = Parity odd except last byte,
which is even for RX
Submit Documentation Feedback
Product Folder Links:
SLOS758G – DECEMBER 2011 – REVISED MARCH 2020
DESCRIPTION
This 3-bit code defines the number of etu (0 to 7) that separate two
characters. ISO/IEC 14443 B TX only.
ISO/IEC 14443 B TX only
DESCRIPTION
Valid for ISO/IEC 14443 A or B high bit rate
tx_br1 = 0, tx_br = 0: 106 kbps
tx_br1 = 0, tx_br = 1: 212 kbps
tx_br1 = 1, tx_br = 0: 424 kbps
tx_br1 = 1, tx_br = 1: 848 kbps
For ISO/IEC 14443 A high-bit-rate coding and decoding
TRF7963A
TRF7963A
Detailed Description 45