Revision History - Texas Instruments TRF7970A Manual

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2 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from April 18, 2014 to March 27, 2017
• Corrected the designation of ISO/IEC standards throughout document; for example, changed ISO14443 to
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ISO/IEC 14443
• Changed the contents of
• Added Section 3.1, Related Products
• Moved T from Section 5.2
STG
• Moved Section 5.2 and changed title from Handling Ratings to ESD Ratings
• Added V and V to
OL OH
• Changed the TYP value of the f
• Throughout document, removed support for application control of Automatic Gain Control (AGC) and Receiver
Gain Adjust, because these features were designed for test functionality and not for production use
• Added NFC Type 5 tags to supported list in
• Removed the paragraph that started "The desired system of operation (bit rate) is achieved by..." from
Section 6.1.2, NFC Device Operation – Initiator
• Removed the paragraph that started "The desired system of operation (bit rate) is achieved by..." from
Section 6.1.3, NFC Device Operation – Target
• Throughout document, changed "tag" emulation or emulator to "card" emulation or emulator
• Added the sentence that starts "For interoperability purposes, TI recommends..." in the first bulleted list item in
Section 6.1.3, NFC Device Operation – Target
• Changed POLLING to SENSF_REQ in the bulleted list item that starts "If the first command is a
SENSF_REQ..." and deleted the sentence that started "The POLLING response is sent in..." in
NFC Device Operation – Target
• Updated the bulleted list item that starts "If the first command is ATR_REQ..." in
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Operation – Target
• Changed "coded as ISO14443" to "SENSB_REQ" in the bulleted list item that starts "If the first command is a
SENSB_REQ..." in Section
• Changed "FeliCa" to "peer-to-peer" in
• Updated the paragraph that starts "The transmission of a response must occur after RF collision avoidance..." in
Section 6.1.3.1, Active Target
• Updated the paragraph that starts "The transmit system in passive target mode..." in
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Target
• Updated the description in
• Added the sentence that starts "For applications in which the TRF7970A may be subjected..." in the second
paragraph of Section
• Changed V to V
DD_A DD_X
the NOTE in Analog Supply Regulator: V
• Removed the paragraph that started "The RF power amplifier regulator..." from Digital Supply Regulator: V
• Changed 250 mV to 400 mV in "...a "Delta Voltage" of 400 mV below V
• Added the paragraph that starts "As V
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Settings
• Removed the paragraphs that started "The main receiver also has..." and "By default, the AGC window
comparator..." from Section
• Changed Table 6-5 to match
• Updated Section 6.5, Receiver – Digital Section, to clarify and remove duplicate content
• Updated the description in
• Removed "Equivalent Series Resistance" from
• Removed mention of 3-wire SPI and replaced "IRQ" with "Slave Select" in the first paragraph of
General Introduction
• Updated the description of FIFO level interrupts in
• Added "but recommended" to "It is optional but recommended to read the FIFO Status register..." in
Section 6.10.3, Reception of Air Interface Data
• Changed the title of
• Removed the sentence that started "The choice of one of these modes over another..." from
Serial Interface Communication (SPI)
• Updated the paragraph that starts "TI recommends resetting the FIFO after receiving data..." in
Copyright © 2011–2017, Texas Instruments Incorporated
Section 1.3, Description
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to Section 5.1, Absolute Maximum Ratings
Section 5.4, Electrical Characteristics
parameter from 8 to 4 MHz in
D_CLKmax
Section
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6.1.3, NFC Device Operation – Target
Section 6.1.3.1, Active Target, and
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Section 6.1.3.3, Card Emulation
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6.3, Power Supplies
in the last sentence that reads "The V
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DD_A
is increased, the system..." in
DD_RF
6.4.2, Receiver Gain and Filter Stages
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Table 6-37
Section 6.5.1.2, External RSSI
Table
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Section 6.10.4, Data Transmission From MCU to TRF7970A
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SLOS743L – AUGUST 2011 – REVISED MARCH 2017
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Section
6.1.1, RFID and NFC Operation – Reader and Writer
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Section
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output current should not exceed 20 mA." in
DD_X
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..."
IN
Section
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6-9, Minimum Crystal Recommendations
Section 6.10.1.4, FIFO Operation
TRF7970A
5.4, Electrical Characteristics
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Section 6.1.3,
Section 6.1.3, NFC Device
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6.1.3.2, Passive Target
Section 6.1.3.2, Passive
6.3.2, Supply Regulator
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Section 6.10.1,
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Section 6.10.5,
Revision History
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