Texas Instruments TRF7970A Instruction Manual page 58

TRF7970A
SLOS743K – AUGUST 2011 – REVISED APRIL 2014
B2 iso_2 RFID / Card Emulation
B1 iso_1 RFID / NFC bit rate
B0 iso_0 RFID / NFC bit rate
Table 6-27. ISO Control Register ISO_x Settings, RFID Mode
ISO_4 ISO_3 ISO_2
0 0 0
0 0 0
0 0 0
0 0 0
0 0 1
0 0 1
0 0 1
0 0 1
0 1 0
0 1 0
0 1 0
0 1 0
0 1 1
0 1 1
0 1 1
0 1 1
1 0 0
1 0 1
1 1 0
1 1 0
(1) For ISO14443A/B, when bit rate of TX is different from RX, settings can be done in register 0x02 or 0x03.
NFC Mode (B5 = 1, B2 = 0) or Card Emulation (B5 = 1, B2 = 1)
ISO_1
0
0
1
1
58 Detailed Description
Table 6-26. ISO Control Register (0x01) (continued)
NFC:
0 = NFC Normal Modes
1 = Card Emulation Mode
NFC:
0 = bit rate selection or card emulation selection, see
NFC:
0 = bit rate selection or card emulation selection, see
ISO_1 ISO_0
0 0 ISO15693 low bit rate, 6.62 kbps, one subcarrier, 1 out of 4
0 1 ISO15693 low bit rate, 6.62 kbps, one subcarrier, 1 out of 256
1 0 ISO15693 high bit rate, 26.48 kbps, one subcarrier, 1 out of 4
1 1 ISO15693 high bit rate, 26.48 kbps, one subcarrier, 1 out of 256
0 0 ISO15693 low bit rate, 6.67 kbps, double subcarrier, 1 out of 4
0 1 ISO15693 low bit rate, 6.67 kbps, double subcarrier, 1 out of 256
1 0 ISO15693 high bit rate, 26.69 kbps, double subcarrier, 1 out of 4
ISO15693 high bit rate, 26.69 kbps, double subcarrier,
1 1
1 out of 256
0 0 ISO14443A RX bit rate, 106 kbps
0 1 ISO14443A RX high bit rate, 212 kbps
1 0 ISO14443A RX high bit rate, 424 kbps
1 1 ISO14443A RX high bit rate, 848 kbps
0 0 ISO14443B RX bit rate, 106 kbps
0 1 ISO14443B RX high bit rate, 212 kbps
1 0 ISO14443B RX high bit rate, 424 kbps
1 1 ISO14443B RX high bit rate, 848 kbps
1 1 Reserved
0 0 Reserved
1 0 FeliCa 212 kbps
1 1 FeliCa 424 kbps
Table 6-28. ISO Control Register ISO_x Settings,
ISO_0
0
1
0
1
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Protocol
NFC
(B5 = 1, B2 = 0)
N/A
106 kbps
212 kbps
424 kbps
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TRF7970A
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Table 6-28
Table 6-28
Remarks
Default for reader
RX bit rate
RX bit rate
Card Emulation
(B5 = 1, B2 = 1)
ISO14443A
ISO14443B
N/A
N/A
(1)
(1)