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A7137

2.4GHz FSK/GFSK 10 dBm 2Mbps Transceiver

Document Title

A7137 Data Sheet, 2.4GHz FSK/GFSK Transceiver with 10 dBm PA at 2Mbps data rate.

Revision History

0.1

0.2

0.3

0.4

1.0

Initial issue.

Add descriptions for HECF, FECF and CRCF clear method in 9.2.1

Add suggestion in WOR function

Add more description for ADC function

Full Production

May, 2012

Aug.,2012

Oct.,2012

July,2013

Important Notice:

AMICCOM reserves the right to make changes to its products or to discontinue any integrated circuit product or service

without notice. AMICCOM integrated circuit products are not designed, intended, authorized, or warranted to be suitable for

use in life-support applications, devices or systems or other critical applications. Use of AMICCOM products in such

applications is understood to be fully at the risk of the customer.

Mar., 2014, Version 1.0

AMICCOM Electronics Corporation

Mar., 2014

Rev. No.

History

Issue Date

Remark

Preliminary

A7137

2.4GHz FSK/GFSK 10 dBm 2Mbps Transceiver

Table of Contents

1. General Description....................................................................................................................................................... 1

2. Typical Applications ....................................................................................................................................................... 1

3. Feature ......................................................................................................................................................................... 1

4. Pin Configurations ......................................................................................................................................................... 6

5. Pin Description (I: input; O: output, I/O: input or output)................................................................................................... 5

6. Chip Block Diagram....................................................................................................................................................... 6

7. Absolute Maximum Ratings............................................................................................................................................ 7

8. Electrical Specification................................................................................................................................................... 8

9. Control Register ...........................................................................................................................................................10

9.1 Control register table............................................................................................................................................10

9.2 Control register description ..................................................................................................................................13

9.2.1 Mode Register (Address: 00h) ....................................................................................................................13

9.2.2 Mode Control Register (Address: 01h)......................................................................................................13

9.2.3 Calibration Control Register (Address: 02h)..............................................................................................14

9.2.4 FIFO Register I (Address: 03h).................................................................................................................14

9.2.5 FIFO Register II (Address: 04h)................................................................................................................14

9.2.6 FIFO DATA Register (Address: 05h) .........................................................................................................14

9.2.7 ID DATA Register (Address: 06h)................................................................................................................14

9.2.8 RC OSC Register I (Address: 07h) .............................................................................................................15

9.2.9 RC OSC Register II (Address: 08h).............................................................................................................15

9.2.10 RC OSC Register III (Address: 09h)..........................................................................................................15

9.2.11 CKO Pin Control Register (Address: 0Ah) .................................................................................................15

9.2.12 GIO1 Pin Control Register I (Address: 0Bh)...............................................................................................16

9.2.13 GIO2 Pin Control Register II (Address: 0Ch) .............................................................................................17

9.2.14 Clock Register (Address: 0Dh)..................................................................................................................18

9.2.15 PLL Register I (Address: 0Eh)...................................................................................................................19

9.2.16 PLL Register II (Address: 0Fh)..................................................................................................................19

9.2.17 PLL Register III (Address: 10h) .................................................................................................................19

9.2.18 PLL Register IV (Address: 11h).................................................................................................................19

9.2.19 PLL Register V (Address: 12h) ...............................................................................................................19

9.2.20 Channel Group Register I (Address: 13h)..................................................................................................19

9.2.21 Channel Group Register II (Address: 14h).................................................................................................20

9.2.22 TX Register I (Address: 15h).....................................................................................................................20

9.2.23 TX Register II (Address: 16h)....................................................................................................................20

9.2.24 Delay Register I (Address: 17h) ................................................................................................................20

9.2.25 Delay Register II (Address: 18h) ...............................................................................................................21

9.2.26 RX Register (Address: 19h) ......................................................................................................................21

9.2.27 RX Gain Register I (Address: 1Ah)............................................................................................................22

9.2.28 RX Gain Register II (Address: 1Bh)...........................................................................................................22

9.2.29 RX Gain Register III (Address: 1Ch) .........................................................................................................22

9.2.30 RX Gain Register IV (Address: 1Dh) .........................................................................................................23

9.2.31 RSSI Threshold Register (Address: 1Eh) ..................................................................................................23

9.2.32 ADC Control Register (Address: 1Fh)........................................................................................................23

9.2.33 Code Register I (Address: 20h).................................................................................................................24

9.2.34 Code Register II (Address: 21h)................................................................................................................24

9.2.35 Code Register III (Address: 22h)...............................................................................................................24

9.2.36 IF Calibration Register I (Address: 23h).....................................................................................................25

9.2.37 IF Calibration Register II (Address: 24h)....................................................................................................25

9.2.38 VCO current Calibration Register (Address: 25h).......................................................................................25

9.2.39 VCO band Calibration Register I (Address: 26h)........................................................................................26

9.2.40 VCO band Calibration Register II (Address: 27h).......................................................................................26

9.2.41 VCO Deviation Calibration Register I (Address: 28h) .................................................................................26

9.2.42 VCO Deviation Calibration Register II (Address: 29h) ................................................................................27

9.2.43 DASP0 (Address: 2Ah, Page 0 by AGT [3:0]=0) ........................................................................................27

9.2.43 DASP1 (Address: 2Ah, Page 1 by AGT[3:0]=1) .........................................................................................27

Mar., 2014, Version 1.0

AMICCOM Electronics Corporation

A7137

2.4GHz FSK/GFSK 10 dBm 2Mbps Transceiver

9.2.43 DASP2 (Address: 2Ah, Page 2 by AGT[3:0]=2) .........................................................................................28

9.2.43 DASP3 (Address: 2Ah, Page 3 by AGT[3:0]=3) .........................................................................................28

9.2.43 DASP4 (Address: 2Ah, Page 4 by AGT[3:0]=4) .........................................................................................28

9.2.43 DASP5 (Address: 2Ah, Page 5 by AGT[3:0]=5) .........................................................................................28

9.2.43 DASP6 (Address: 2Ah, Page 6 by AGT[3:0]=6) .........................................................................................28

9.2.43 DASP7 (Address: 2Ah, Page 7 by AGT[3:0]=7) .........................................................................................28

9.2.44 VCO Modulation Delay Register (Address: 2Bh)........................................................................................29

9.2.45 Battery detect Register (Address: 2Ch) .....................................................................................................29

9.2.46 TX test Register (Address: 2Dh) ...............................................................................................................29

9.2.47 Rx DEM test Register I (Address: 2Eh) .....................................................................................................30

9.2.48 Rx DEM test Register II (Address: 2Fh).....................................................................................................30

9.2.49 Charge Pump Current Register I (Address: 30h) .......................................................................................30

9.2.50 Charge Pump Current Register II (Address: 31h).......................................................................................30

9.2.51 Crystal test Register (Address: 32h)..........................................................................................................31

9.2.52 PLL test Register (Address:33h) ...............................................................................................................31

9.2.53 VCO test Register I (Address:34h)............................................................................................................31

9.2.54 RF Analog Test Register (Address: 35h)....................................................................................................32

9.2.55 AES Key data Register (Address: 36h)......................................................................................................32

9.2.56 Channel Select Register (Address: 37h)....................................................................................................32

9.2.57 ROMP0 (Address: 38h, Page 0 by AGT[3:0]=0).........................................................................................32

9.2.57 ROMP1 (Address: 38h, Page 1 by AGT[3:0]=1).........................................................................................33

9.2.57 ROMP2 (Address: 38h, Page 2 by AGT[3:0]=2).........................................................................................33

9.2.57 ROMP3 (Address: 38h, Page 3 by AGT[3:0]=3).........................................................................................33

9.2.57 ROMP4 (Address: 38h, Page 4 by AGT[3:0]=4).........................................................................................33

9.2.58 Data Rate Clock Register (Address: 39h) ..................................................................................................33

9.2.59 FCR Register (Address: 3Ah) ...................................................................................................................34

9.2.60 ARD Register (Address: 3Bh) ...................................................................................................................34

9.2.61 AFEP Register (Address: 3Ch)..................................................................................................................34

9.2.62 FCB Register (Address: 3Dh) ...................................................................................................................35

9.2.63 KEYC Register (Address: 3Eh) .................................................................................................................35

9.2.64 USID Register (Address: 3Fh) ..................................................................................................................36

10. SPI.............................................................................................................................................................................37

10.1 SPI Format ........................................................................................................................................................38

10.2 SPI Timing Characteristic ...................................................................................................................................38

10.3 SPI Timing Chart................................................................................................................................................39

10.3.1 Timing Chart of 3-wire SPI........................................................................................................................39

10.3.2 Timing Chart of 4-wire SPI........................................................................................................................39

10.4 Strobe Commands .............................................................................................................................................40

10.4.1 Strobe Command - Sleep Mode ................................................................................................................40

10.4.2 Strobe Command - ldle Mode ...................................................................................................................40

10.4.3 Strobe Command - Standby Mode ............................................................................................................41

10.4.4 Strobe Command - PLL Mode...................................................................................................................41

10.4.5 Strobe Command - RX Mode....................................................................................................................42

10.4.6 Strobe Command - TX Mode ....................................................................................................................42

10.4.7 Strobe Command – FIFO Write Pointer Reset ...........................................................................................42

10.4.8 Strobe Command – FIFO Read Pointer Reset ...........................................................................................43

10.4.9 Strobe Command – Deep Sleep Mode ......................................................................................................43

10.5 Reset Command................................................................................................................................................44

10.6 ID Accessing Command .....................................................................................................................................44

10.6.1 ID Write Command...................................................................................................................................44

10.6.2 ID Read Command ..................................................................................................................................45

10.7 FIFO Accessing Command.................................................................................................................................45

10.7.1 TX FIFO Write Command .........................................................................................................................45

10.7.2 Rx FIFO Read Command.........................................................................................................................46

11. State machine.............................................................................................................................................................47

11.1 Key states..........................................................................................................................................................47

11.2 FIFO mode ........................................................................................................................................................48

11.3 Direct mode .......................................................................................................................................................49

12. Crystal Oscillator ........................................................................................................................................................52

12.1 Use External Crystal ..........................................................................................................................................52

Mar., 2014, Version 1.0

AMICCOM Electronics Corporation

A7137

2.4GHz FSK/GFSK 10 dBm 2Mbps Transceiver

12.2 Use External Clock ............................................................................................................................................52

13. System Clock .............................................................................................................................................................53

13.2 Data Rate Setting ..............................................................................................................................................53

14. Transceiver LO Frequency..........................................................................................................................................54

14.1 LO Frequency Setting ........................................................................................................................................54

14.2 IF Side Band Select ...........................................................................................................................................55

14.2.1 Auto IF Exchange.....................................................................................................................................56

14.2.2 Fast Exchange.........................................................................................................................................57

14.3 Auto Frequency Compensation...........................................................................................................................58

15. Calibration..................................................................................................................................................................59

15.1 Calibration Procedure ........................................................................................................................................59

16. FIFO (First In First Out)...............................................................................................................................................59

16.1 TX Packet Format in FIFO mode ........................................................................................................................59

16.1.1 Basic FIFO mode .....................................................................................................................................59

16.1.2 Advanced FIFO mode...............................................................................................................................60

16.2 Bit Stream Process in FIFO mode.......................................................................................................................61

16.3 Transmission Time.............................................................................................................................................61

16.4 Usage of TX and RX FIFO .................................................................................................................................62

16.4.1 Easy FIFO ...............................................................................................................................................62

16.4.2 Segment FIFO .........................................................................................................................................64

16.4.3 FIFO Extension........................................................................................................................................66

17. ADC (Analog to Digital Converter) ...............................................................................................................................70

17.1 RSSI Measurement............................................................................................................................................70

18. Battery Detect ............................................................................................................................................................73

19. Auto-ack and auto-resend ...........................................................................................................................................74

19.1 Basic FIFO plus auto-ack auto-resend................................................................................................................74

19.2 Advanced FIFO plus auto-ack and auto-resend...................................................................................................74

19.3 WTR Behavior during auto-ack and auto-resend .................................................................................................76

19.6 Examples of auto-ack and auto-resend...............................................................................................................77

20. RC Oscillator ..............................................................................................................................................................79

20.1 WOR Function...................................................................................................................................................79

20.2 TWOR Function .................................................................................................................................................80

21. AES128 Security Packet .............................................................................................................................................80

22. Application circuit........................................................................................................................................................81

22.1 MD7137-A01 .....................................................................................................................................................81

23. Abbreviations..............................................................................................................................................................83

24. Ordering Information...................................................................................................................................................83

25. Package Information...................................................................................................................................................84

26. Top Marking Information..............................................................................................................................................85

27. Reflow Profile .............................................................................................................................................................86

28. Tape Reel Information.................................................................................................................................................87

29. Product Status............................................................................................................................................................89

Mar., 2014, Version 1.0

AMICCOM Electronics Corporation

A7137

2.4GHz FSK/GFSK 10 dBm 2Mbps Transceiver

1. General Description

A7137 is a 10dBm output power and low cost 2.4GHz ISM band wireless transceiver. This device integrates both high

sensitivity receiver (-90dBm @ 2Mbps) and programmable power amplifier (-18 ~ 10dBm). Based on Data Rate Register

(39h), user can configure on-air data rates for 2Mbps or 1Mbps or 500Kbps operation.

A7137 supports fast settling time (90 us) for frequency hopping system. For packet handling, A7137 has built-in separated

64-bytes TX/RX FIFO (could be logically extended to 4K bytes) for data buffering and burst transmission, auto-ack and

auto-resend, CRC for error packet filtering, FEC for 1-bit data correction per code word, RSSI for clear channel assessment,

thermal sensor for monitoring relative temperature, WOR (Wake on RX) function to support periodically wake up from sleep

mode to RX mode and listen for incoming packets without MCU interaction, data whitening for data encryption / decryption. In

addition, A7137 has built-in AES128 co-processor (Advanced Encryption Standard) for advanced data encryption and

decryption which consists of the transformation of a 128-bit block into an encrypted 128-bit block. Those functions are very

easy to use while developing a wireless system. All features are integrated in a small QFN 4X4 20 pins package.

A7137’s

control registers

are accessed via 3-wire or 4-wire SPI interface such as TX/RF FIFO, ID register, RSSI value,

frequency hopping to chip calibration procedures. Another one, via SPI as well, is the unique

Strobe command;

A7137 can

be controlled from power saving mode (deep sleep, sleep, idle, standby), PLL mode, TX mode and RX mode. The other

connections between A7137 and MCU are GIO1 and GIO2 (multi-function GPIO) to output A7137’s status so that MCU could

use either polling or interrupt scheme for radio control. Overall, this device is very easy-to-use for developing a wireless

application with a MCU.

3. Feature

Small size (QFN4 X4, 20 pins).

Frequency band: 2400 ~ 2483.5MHz.

FSK or GFSK modulation

Low current consumption: RX 24mA, TX 35.5mA (at 10dBm output power).

Deep sleep current (0.1 uA).

Sleep current (4 uA).

On chip regulator, support input voltage 2.0 ~ 3.6 V.

Programmable data rate 500Kbps / 1Mbps / 2Mbps.

Programmable TX power level from – 18 dBm to 10 dBm.

High RX sensitivity:

-90dBm at 2Mbps on-air data rate.

-94dBm at 1Mbps on-air data rate.

-96dBm at 500Kbps on-air data rate.

Fast settling time (90 us) synthesizer for frequency hopping system.

On chip low power RC oscillator for WOR (Wake on RX) function.

Built-in AES128 co-processor

AGC (Auto Gain Control) for the wide RSSI dynamic range.

AFC (Auto Frequency Compensation) for frequency drift due to temperature.

Support low cost crystal (16 MHz).

Low Battery Detector indication.

Easy to use.

Support 3-wire or 4-wire SPI.

Unique Strobe command via SPI.

ONE register setting for new channel frequency.

CRC Error Packet Filtering.

Auto-acknowledgement and auto-resend.

Dynamic FIFO length.

2.4GHz audio streaming

2.4GHz active RF ID

2.4GHz airplanes and helicopter

2. Typical Applications

Mar., 2014, Version 1.0

2400 ~ 2483.5 MHz ISM system

Wireless home security and automation

Wireless toys and game controllers

AMICCOM Electronics Corporation

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