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
TestPort
or
Ext AntPort
1
TRF796x
RHB-32
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25
17
18
19
20
21
22
23
24
33
ThermalPad
VDD_X
OSC_IN
OSC_OUT
VSS_D
EN
SYS_CL
DATA_CLK
EN2
VDD_I /O
VSS_A
MOD
IRQ
ASK/
BANDGAP
VSS
RX2_PM
RX1_AM
VDD_A
VSS_RX
VSS_RF
TX_OUT
VDD_PA
VDD_RF
VIN
I/O_0
I/O_1
I/O_2
I/O_3
I/O_4
I/O_5
I/O_6
I/O_7
1000pF
1000pF
1500pF
1500pF
680pF
680pF
220pF
VSWR
Adj
Phase
Adj
330nH
150nH
Freq
Adj
100pF
27pF
2.2
Fµ
10nF
10nF
10nF
10nF
2.2
Fµ
2.2
Fµ
2.2
Fµ
0Ohms
0Ohms
27pF
27pF
13.56MHz
VSWR
Adj
Vcc
DVcc
D/AVss
MISO
MOSI
XIN
10K
10K
1K
1K
CLK(GPIO)
SlaveSelect(GPIO)
ReaderPwrEnable(GPIO)
InterruptCapableGPIO
MSP430(Family)
4.7
F
10V
µ
0.1
Fµ
1K
100
0.1
Fµ
2.2
Fµ
10nF
10pF
Harmonic
Suppression
10K
C1
C2´
Xtal C
L
C
S
C1+C
2
=
+
Antenna
Circuit
Ant “Q”
Adj
R “cal”
open/short/load
TRF7960
TRF7961
SLOU186F–AUGUST 2006–REVISED AUGUST 2010
www.ti.com
4.6 Application Schematic for the TRF796x EVM (SPI Mode)
10 ELECTRICAL SPECIFICATIONS Copyright © 2006–2010, Texas Instruments Incorporated
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