Functional Block Diagram - Texas Instruments TRF7970A Manual

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1.4

Functional Block Diagram

Figure 1-1 shows the block diagram.
MUX
RX_IN1
RX_IN2
VDD_PA
TX_OUT
Analog Front End
VSS_PA
EN
EN2
Digital Control
State Machine
ASK/OOK
MOD
OSC_IN
Crystal or Oscillator
Timing System
OSC_OUT
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Phase and
Gain
Amplitude
Detector
RF Level
Detector
RSSI
(External)
Phase and
Gain
Amplitude
Detector
ISO
Protocol
Handling
Transmitter
Conversion
CRC and Parity
Figure 1-1. Block Diagram
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RSSI
(AUX)
(Control
Registers and
Command
RSSI
(Main)
Filter
Digitizer
and AGC
Interface
Decoder
Bit 127-Byte
Framing
Framing
Serial
Voltage Supply Regulator Systems
(Supply Regulators and Reference Voltages)
Copyright © 2017, Texas Instruments Incorporated
TRF7970A
SLOS743L – AUGUST 2011 – REVISED MARCH 2017
VDD_I/O
I/O_0
Logic
State I/O_1
Control
Logic
I/O_2
I/O_3
I/O_4
Logic)
I/O_5
I/O_6
MCU
I/O_7
IRQ
SYS_CLK
FIFO
DATA_CLK
VIN
VDD_A
BAND_GAP
VSS_A
VDD_RF
VSS_RF
VDD_X
VSS
VSS_D
Device Overview
TRF7970A
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