User's Manual
Table Of Contents
- 1 Introduction
- Table of Contents
- 2 Description (continued)
- 3 Physical Characteristics
- 4 ELECTRICAL SPECIFICATIONS
- 5 System Description
- 5.1 Power Supplies
- 5.2 Receiver – Analog Section
- 5.3 Register Descriptions
- 5.4 Direct Commands From MCU to Reader
- 5.4.1 Command Codes
- 5.4.2 Reset
- 5.4.3 Transmission With CRC
- 5.4.4 Transmission Without CRC
- 5.4.5 Delayed Transmission With CRC
- 5.4.6 Delayed Transmission Without CRC
- 5.4.7 Transmission Next Slot
- 5.4.8 Receiver Gain Adjust
- 5.4.9 Test External RF (RSSI at RX input with TX OFF)
- 5.4.10 Test Internal RF (RSSI at RX input with TX ON)
- 5.4.11 Block Receiver
- 5.4.12 Enable Receiver
- 5.5 Reader Communication Interface
- 5.6 Parallel Interface Communication
- 5.7 Serial Interface Communication
- 5.8 External Power Amplifier Application
TRF7960
TRF7961
SLOU186F–AUGUST 2006–REVISED AUGUST 2010
www.ti.com
Table 5-10. ISO Control (01h)
Controls the ISO selection
Register default is 0x02, which is ISO15693 high bit rate, one sub-carrier, 1 out of 4. It is preset at EN = L or POR = H.
Bit Bit Name Function Comments
B7 rx_crc_n Receiving without CRC 1 = no RX CRC
0 = RX CRC
B6 dir_mode Direct mode type 0 = output is sub-carrier data.
1 = output is bit stream (I/O_6) and bit clock (I/O_5) from decoder selected by ISO bits
B5 rfid RFID mode Should always be set to 0
B4 iso_4
B3 iso_3
B2 iso_2 RFID mode See Table 5-11
B1 iso_1
B0 iso_0
Table 5-11. RFID Mode Selections
Iso_4 Iso_3 Iso_2 Iso_1 Iso_0 Protocol Remarks
0 0 0 0 0 ISO15693 low bit rate 6.62 kbps one sub-carrier 1 out of 4
0 0 0 0 1 ISO15693 low bit rate 6.62 kbps one sub-carrier 1 out of 256
0 0 0 1 0 ISO15693 high bit rate 26.48 kbps one sub-carrier 1 out of 4 Default for reader
0 0 0 1 1 ISO15693 high bit rate 26.48 kbps one sub-carrier 1 out of 256
0 0 1 0 0 ISO15693 low bit rate 6.67 kbps double sub-carrier 1 out of 4
0 0 1 0 1 ISO15693 low bit rate 6.67 kbps double sub-carrier 1 out of 256
0 0 1 1 0 ISO15693 high bit rate 26.69 kbps double sub-carrier 1 out of 4
0 0 1 1 1 ISO15693 high bit rate 26.69 kbps double sub-carrier 1 out of 256
0 1 0 0 0 ISO14443A bit rate 106 kbps RX bit rate when
TX bit rate is
0 1 0 0 1 ISO14443A high bit rate 212 kbps
different than RX
0 1 0 1 0 ISO14443A high bit rate 424 kbps
(reg03)
0 1 0 1 1 ISO14443A high bit rate 848 kbps
0 1 1 0 0 ISO14443B bit rate 106 kbps RX bit rate when
TX bit rate is
0 1 1 0 1 ISO14443B high bit rate 212 kbps
different than RX
0 1 1 1 0 ISO14443B high bit rate 424 kbps
(reg03)
0 1 1 1 1 ISO14443B high bit rate 848 kbps
1 0 0 1 1 Tag-it
26 System Description Copyright © 2006–2010, Texas Instruments Incorporated
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