Panasonic eUniStone Guide

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eUniStone
PAN1322 Application Note DesignGuide

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PAN1322
Application Note 2 Revision 1.2, 2013-12-18
Design Guide
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PAN1322
Application Note 3 Revision 1.2, 2013-12-18
Design Guide
Revision History
Revision Number
Description
Revision Date
1.2
Updated reference schematic
Added chapter describing how to change from HCI to SPP, chapter 9.4.
16-Oct-2013
1.1
Added chapters Application development and FAQ
27-Jun-2013
1.0
New document for eUniStone PBA31309 v1.00
12-Mar-2013

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PAN1322
Application Note 4 Revision 1.2, 2013-12-18
Design Guide
Contents
1Introduction..................................................................................................................10
2Interfaces ......................................................................................................................13
2.1 UART Interface ............................................................................................................13
2.1.1 Low Power Mode Control .........................................................................................13
2.1.2 Hardware Flow Control.............................................................................................15
2.2 EEPROM / I2C Interface...........................................................................................15
2.3 GPIO Interface.............................................................................................................16
2.4 JTAG Interface.............................................................................................................16
3Power Supply ...............................................................................................................17
3.1 Power up Sequence ...................................................................................................17
3.2 Power down through ONOFF Pin...........................................................................18
4Operation Modes.........................................................................................................19
4.1 Command Mode ..........................................................................................................19
4.2 Stream Mode................................................................................................................19
4.3 Switch from Command Mode to Stream Mode ...............................................20
4.4 Switch from Stream Mode to Command Mode ...............................................20
5Accessory Development Compatible with Smart Phones............................21
5.1 Accessory.......................................................................................................................22
5.1.1 Host Processor.............................................................................................................22
5.1.2 Host Application ..........................................................................................................24
5.1.3 Smart Phone compatibility requirements..........................................................26
5.1.3.1 Serial Port Profile - device A and B .....................................................................26
5.1.3.2 Security settings –Input & Output Capabilities .............................................27
5.1.3.3 Registering service - UUID and CoD. .................................................................28
5.1.3.4 Registering multiple services and connection handling...............................30
5.1.3.5 Smart Phone connecting to Accessory...............................................................31

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PAN1322
Application Note 5 Revision 1.2, 2013-12-18
Design Guide
5.2 Smart Phone specifics...............................................................................................32
5.2.1 Android Smart Phones..............................................................................................33
5.2.1.1 Registering service for Android compatibility..................................................33
5.2.1.2 Security settings and connecting/bonding to Smart Phone versus App
in the phone .................................................................................................................34
5.2.1.3 Android market and Developing Apps for Android Smart Phones...........35
5.2.2 Windows phone ...........................................................................................................35
5.2.2.1 Registering service for Windows Phone.............................................................35
5.2.2.2 Bonding ..........................................................................................................................36
5.2.2.3 Windows Phone Store, development and design...........................................36
5.2.2.4 Programming language for Windows Phone ....................................................37
5.2.3 iPhone .............................................................................................................................37
5.2.3.1 Registering service for iPhone...............................................................................38
5.2.3.2 Bonding ..........................................................................................................................39
5.2.3.3 iOS and MFi license....................................................................................................40
6Reference Design Schematic .................................................................................41
7Layout .............................................................................................................................44
7.1 Two layer PCB reference design ...........................................................................44
7.2 General four layer PCB design ..............................................................................46
7.2.1 Phase1: Layer Assignment....................................................................................46
7.2.1.1 Via Holes ........................................................................................................................47
7.2.2 Phase 2: Components Placement .......................................................................48
7.2.3 Phase 3: Routing.......................................................................................................48
7.2.3.1 Basic Hints.....................................................................................................................48
7.2.3.2 Layout Specific Hints.................................................................................................48
8Antenna..........................................................................................................................50
9Test and Development Tools..................................................................................51
9.1 Tools available for development and testing...................................................51
9.1.1 SPP Toolbox..................................................................................................................51

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PAN1322
Application Note 6 Revision 1.2, 2013-12-18
Design Guide
9.1.2 SPP Test Tool ...............................................................................................................51
9.1.3 HCI Lite ..........................................................................................................................51
9.1.4 eeprog –Aardvark .....................................................................................................51
9.2 Setup of Device Under Test (DUT) ......................................................................52
9.3 Preparation for RF Tests in non-signaling mode ............................................53
9.4 Restoring from HCI to SPP (without using Aardvark)..................................55
9.4.1 Restoring SPP-AT - Overwriting EEPROM..........................................................55
9.4.2 Restoring SPP-AT - Loading latest SPP-AT Application. ..............................58
9.4.3 Restoring SPP - Writing BD address and oscillator trim value .................59
9.5 Crystal Trimming ........................................................................................................60
9.5.1 Osc_Trim Parameter .................................................................................................60
9.5.2 Crystal Trimming Procedure...................................................................................61
9.5.2.1 Crystal Trimming with HCI application for special RF tests.......................61
9.5.2.2 Crystal Trimming with SPP-AT Application.......................................................65
10 FAQ ..................................................................................................................................67
10.1 First use of PBA31309 USB dongles....................................................................67
10.1.1 Connect the dongle to a USB port on the computer....................................67
10.1.2 Modify FTDI COM port settings for full throughput.......................................68
10.2 Change UART baud rate of PBA31309 ...............................................................69
10.2.1 Change of baud rate in product manufacturing .............................................69
10.2.2 Change of baud rate by host at runtime...........................................................70
10.3 SW update.....................................................................................................................70
10.4 Aardvark and eeprog.exe........................................................................................71
10.4.1 Installing Aardvark.....................................................................................................71
10.4.2 Connecting Aardvark to PBA31309 .....................................................................73
10.4.3 Downloading software to PBA31309...................................................................73
10.4.4 Aardvark problems. ...................................................................................................73
10.5 UUID & CoD..................................................................................................................74

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PAN1322
Application Note 7 Revision 1.2, 2013-12-18
Design Guide
10.6 Low Power Mode, LPM, control..............................................................................74
10.7 Bluetooth Qualification and Regulatory Certification....................................74
11 References.....................................................................................................................75
Figures
Figure 1. Simplified Block Diagram of eUniStone Module..................................................12
Figure 2. UART Interface ................................................................................................................13
Figure 3. Host Initiates Low Power Mode Entry and Exit ...................................................14
Figure 4. Host Initiates Low Power Mode Entry, eUniStone Initiates Exit...................15
Figure 5. Example of EEPROM Access at Start-up ................................................................18
Figure 6. Accessory with Mobile App..........................................................................................21
Figure 7. Host processor with peripheral device and UART connection to eUniStone
...........................................................................................................................................................23
Figure 8. General state machine for a Host application as accessory...........................25
Figure 9. Smart Phone Apps using Serial Port Profile UUID connecting to Serial
port accessory. ............................................................................................................................29
Figure 10. eUniStone with three registered services and possible connections to
Smart Phones. .............................................................................................................................30
Figure 11. Handling incoming connection depending on service....................................31
Figure 12. Accessory and Android Smart Phone App using the same UUID will be
able to connect............................................................................................................................34
Figure 13. Reference Design .........................................................................................................43
Figure 14. Restricted area under antenna and recommended placement on PCB. .44
Figure 15. Top layer and drill holes of the eUniStone USB Dongle. ..............................45
Figure 16. Bottom layer (from above) and drill holes of the eUniStone USB Dongle.
...........................................................................................................................................................45
Figure 17. The two layers of the eUniStone USB Dongle. .................................................46

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PAN1322
Application Note 8 Revision 1.2, 2013-12-18
Design Guide
Figure 18. Example of a four layer stack-up...........................................................................47
Figure 19. Via Types.........................................................................................................................47
Figure 20. Radiation patterns of the built in antenna. ........................................................50
Figure 21. Setup of Device Under Test with AT commands. ............................................52
Figure 22. Download of HCI Application via UART................................................................54
Figure 23 Restoring from HCI to SPP-AT using HCI Lite....................................................56
Figure 24 Downloading latest SPP-AT application. ...............................................................58
Figure 25. Typical 32MHz frequency offset in PPM versus OSC_Trim value. .............61
Figure 26. Crystal Trimming using HCI Lite Tool ..................................................................62
Figure 27. Intel Write BD-Data Window ...................................................................................64
Figure 28. Crystal Trimming using eBMU SPP Toolbox.......................................................66
Figure 29. Finding the COM port in the Device Manager ...................................................68
Figure 30. Modify the Latency Timer of the FTDI driver ....................................................68
Figure 31. Aardvark drivers installed and visible in the Device Manager. ..................72
Figure 32. Aardvark connect to the PBA31309 USB dongle. (Black = GND, Red =
I2C clock, White = I2C data).................................................................................................73
Figure 33. PBA31309 powered by an USB hub ......................................................................74
Tables
Table 1. Sending and receiving data in command mode ...................................................19
Table 2. Sending and receiving data in stream mode.........................................................19
Table 3. Configurable combination of Input and Output Capabilities for eUniStone.
...........................................................................................................................................................28
Table 4. Class of Device bits for a handheld terminal with bar-code scanner. .........28
Table 5. CoD examples for some accessories. .......................................................................29
Table 6. Accessory (eUniStone) set to connectable, device B .........................................31
Table 7. Android Smart Phone - bonding with eUniStone .................................................34

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PAN1322
Application Note 9 Revision 1.2, 2013-12-18
Design Guide
Table 8. Windows Phone - bonding with eUniStone. ...........................................................36
Table 9. iPhone - bonding with eUniStone. .............................................................................40
Table 10. Default Pin Configuration............................................................................................42
Table 11. Register for Switching Capacitances ......................................................................60
Table 12. Changing the baud rate at runtime ........................................................................70
Table 13. SW update sequence....................................................................................................70

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PAN1322
Application Note 10 Revision 1.2, 2013-12-18
Design Guide
1Introduction
eUniStone (embedded UniStone), with part number PBA31309, is a module based on PMB8754
(eBMU), an integrated BT radio transceiver, baseband and protocol stack, with EEPROM, band-pass
filter and built in antenna
eUniStone supports the following features
Bluetooth v2.1 + EDR compliant SPP implementation
Secure Simple Pairing, Security Mode 4
oAssociation Models „Numeric Comparison“, „Just Works“ and „Passkey
Entry“ are supported
Encryption Pause Resume
Enhanced Power Control (BT3.0 feature of the BT Controller)
Device A (initiating) and device B (accepting) role
One point-to-point link for data transmission
octet by octet in stream mode
by packets in command mode (MTU size 500 bytes)
Device is visible and connectable until the link has been set up
Sniff and Sniff Sub Rating are supported on the link to save current
Up to five trusted devices can be stored in EEPROM
when 6th device is paired, the first device is deleted
AT commands for development and manufacturing
Device Under Test mode for connection to a BT tester
Secure Simple Paring Debug mode to sniff and decrypt the air traffic
Crystal oscillator re-calibration (needed for debug only)
EEPROM configuration update
SW upgrade via UART and I2C