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AUBTM-22 product datasheet page 1 of 16 ?austar technology 2007 bluetooth v2.0 class 1 module product datasheet gener a l description AUBTM-22 is bluetooth core v2.0 compliant module with spp. the module is designed to be embedded in a host system which requires cable replacement function. typically the module could interface with a host through the uart port. the module could be used in many different application, e.g.: ? hand held terminals ? industrial devices ? point-of-sale systems ? pcs ? personal digital assistants (pdas) ? computer accessories ? access points ? automotive diagnostics units this module could both act a spp master and a spp slave. when in master mode, the module could search for all the working spp slave devices around and the host could select which to connect. when it is in slave mode, it will listen for connection request from another spp master device. key specification ? bluetooth core v2.0 compliant ? spp support ? support uart,usb,pcm,i2c interface to host system
AUBTM-22 product datasheet page 2 of 16 ?austar technology 2007 table of contents 1 physical dimension: .............................................................................................................. 3 2 block diagram ....................................................................................................................... 4 3 foot print ............................................................................................................................... 5 4 pcb layout consideration ..................................................................................................... 6 5 pin configuration: ................................................................................................................. 7 6 device terminal descriptions .............................................................................................. 8 6.1 uart ............................................................................................................................... .... 8 6.2 pcm ............................................................................................................................... ...... 8 6.3 gpio ............................................................................................................................... .... 9 6.3.1 pio2/spp status indicator .................................................................................... 9 6.3.2 pio3/spp disconnect ............................................................................................ 9 6.3.3 pio4,8,9,10,11 ...................................................................................................... 9 6.3.4 pio5/spp master/slave selection ....................................................................... 9 6.3.5 pio6/scl pio7/sda .......................................................................................... 9 6.4 aio ............................................................................................................................... ..... 10 6.5 usb ............................................................................................................................... .... 10 6.6 spi ............................................................................................................................... ...... 10 7 electrical specification: ....................................................................................................... 11 8 soldering ......................................................................................................................... 13 8.1 manual soldering ............................................................................................................ 13 8.2 reflow soldering .............................................................................................................. 13 revision history ............................................................................................................................... ... 15
AUBTM-22 product datasheet page 3 of 16 ?austar technology 2007 1 physical dimension: 22mm 37mm 2mm 14mm austa r AUBTM-22
AUBTM-22 product datasheet page 4 of 16 ?austar technology 2007 pcm uart pio spi usb 2 block diagram fig.1 block diagram antenna match network 16m osc balun/filter bluecore4 8m bit flash pa
AUBTM-22 product datasheet page 5 of 16 ?austar technology 2007 3 foot print fig.2 pad diamension fig.3 pcb layout
AUBTM-22 product datasheet page 6 of 16 ?austar technology 2007 4 pcb layout consideration as with any rf devices, the AUBTM-22 requires careful attention to power supply and grounding arrangements if its potential performance is to be realized. fig.4 copper area fig.4 illustrates how pcb design around the an tenna of AUBTM-22 should be made. the most important thing is that there is no copper (ground plane or traces) underneath or in the close proximity of the antenna. it?s also very important to have grounding vias all the way in the border between ground plane and free space, as illustrated with black and gr ay dots in figures above. this prevents the rf signal for reflecting back to the pcb and signal lines over there. try to avoid any metal material ne ar the antenna and keep at least 5mm away if it is inevitable. a solid ground should be provide for AUBTM-22 and the copper area should be at least 20x15mm to maintain the best rf performance. ground vias no copper in this area copper area 13mm 8mm
AUBTM-22 product datasheet page 7 of 16 ?austar technology 2007 5 pin configuration: pin number pin name i/o 1 pio8 i/o programmable i/o lines 2 pio9 i/o programmable i/o lines 3 pio10 i/o programmable i/o lines 4 pio11 i/o programmable i/o lines 5 gnd gnd ground 6 3v3 vdd power supply connection 7 pio2 i/o programmable i/o lines 8 pio3 i/o programmable i/o lines 9 nrts o uart rts (internal pull-up, active low) 10 rxd i uart rx (internal pull down) 11 pcmo o synchronous 8 kbps data out (internal pull down) 12 usb_d+ a usb data plus (internal 22 ohm serial resistor) 13 usb_d- a usb data minus (internal 22 ohm serial resistor) 14 ncts i uart cts (internal pull down, active low) 15 pcmi i synchronous 8 kbps data in (internal pull-down) 16 pcmc i/o synchronous data clock (internal pull-down) 17 pcms i/o synchronous data strobe (internal pull-down) 18 gnd gnd ground 19 aio0 i/o analog input/output 20 aio1 i/o analog input/output 21 aio2 i/o analog input/output 22 gnd gnd ground 23 3v3 vdd power supply connection 24 res i reset input (active low) 25 pio6 i/o programmable i/o lines 26 pio7 i/o programmable i/o lines 27 pio4 i/o programmable i/o lines 28 ncsb i chip selection for spi (int ernal pull up, active low) 29 sclk i/o spi clock (internal pull down) 30 miso o spi data output (pull down) 31 mosi i spi data input (pull down) 32 pio5 i/o programmable i/o lines 33 txd o uart tx (internal pull up) 34 nc - nc, not used 35 gnd gnd ground 36 test i/o do not connect, factory test only 37 test i/o do not connect, factory test only 38 rf rf rf-transceiver antenna (when chip antenna not in use!) list 1. pin assignment
AUBTM-22 product datasheet page 8 of 16 ?austar technology 2007 6 device terminal descriptions 6.1 uart AUBTM-22 uart provides the main interface to exchange data with other host system using the rs232 protocol. an external commands set is provided for the host system to control and configure AUBTM-22. four signals are provide for uart function. txd and rxd transmit data between AUBTM-22 and the host. nrts and ncts provides the rs232 hardware flow control mechanism. all uart pins are cmos logic with signal levels of 0v to vdd. uart is initially configured to work at 9600 bps baudrate, 8-bit, no parity and 1 stop bit. the host could reconfigure the uart by issuing command. possible uart setting is as the following: 6.2 pcm pulse code modulation (pcm) is a standard me thod used to digitize audio (particularly voice) patterns for transmission over di gital communication channels. through its pcm interface, AUBTM-22 has hardware support fo r continual transmission and reception of pcm data, thus reducing processor overhead for wireless headset applications. AUBTM-22 offers a bi directional digital audio interface th at routes directly into the baseband layer of the on chip firmware. it does not pass through the hci protocol layer. hardware on AUBTM-22 allows the data to be sent to and received from a sco connection. up to three sco connections can be supported by the pcm interface at any one time1. AUBTM-22 can operate as the pcm interface master generating an output clock of 128, 256 or 512khz. when configured as pcm interface slave it can operate with an input clock up to 2048khz. AUBTM-22 is compatible with a variety of clock formats, including long frame sync, short frame sync and gci timing environments. it supports 13 or 16-bit linear, 8-bit -law or a-law companded sample formats at 8ksamples/s and can receive and transmit on any selection of three of the first four slots following pcm_sync. AUBTM-22 interfaces directly to pcm audio devices including the following: ? qualcomm msm 3000 series and msm 50 00 series cdma baseband devices
AUBTM-22 product datasheet page 9 of 16 ?austar technology 2007 ? oki msm7705 four channel a-law and -law codec ? motorola mc145481 8-bit a-law and -law codec ? motorola mc145483 13-bit linear codec ? stw 5093 and 5094 14-bit linear codecs autbm-20 is also compatible with the motorola ssi? interface 6.3 gpio AUBTM-22 has 10 gpio pin which could be used as digital signal input/output. some of them has multiple functions. the signal level on these pins are 0v to vdd. 6.3.1 pio2/spp status indicator when there is no spp connection established, pio2 will toggle its signal level every 0.1s. this could be used to drive a led as the status indicator. 6.3.2 pio3/spp disconnect a low to high transition on pio3 will disconnect all the active spp connection. a at least 5 ms of pulse for this signal is recommended. 6.3.3 pio4,8,9,10,11 this pin has no multiple function. 6.3.4 pio5/spp master/slave selection pio5 is monitored when the module is powered up. a high signal on this pin will make the module to enter spp master mode, while a low signal on this pin will make the module to enter spp slave mode. 6.3.5 pio6/scl pio7/sda pio6/pio7 form a slow speed i2c interface which could be used to access lcd, keyboard scanner or eeprom. this i2c could only act a master and require pull-up resisters as illustrated in fig.
AUBTM-22 product datasheet page 10 of 16 ?austar technology 2007 pio6/pio7 could also be used as general io pin if i2c function is not implemented. 6.4 aio AUBTM-22 has three general purpose analog input/output pins. each of them could be configured as both as 8-bit dac or adc. the host could use commands to read the value on the pin when it is an adc or set its signal level when it is a dac. the signal level of these pins are from 0v to vdd. 6.5 usb AUBTM-22 contains a full-speed (12m bps) us b interface which is capable to drive a usb cable directly without using a external usb transceiver. note that AUBTM-22 could only work as a slave usb device. the usb data lines emerge as pins usb_d+ and usb_d-. these terminals are connected to the internal usb i/o buffers of the AUBTM-22 and therefore have low output impedance. to match the connection to the characteristic impedance of the usb cable, resistors are included with usb_dp / usb_dn and the cable. 6.6 spi the synchronous serial port interface (spi) for interfacing with other digital devices. the spi port can be used for system debugging. it can also be used for programming the flash memory. spi interface is connected using the mosi, miso, csb and clk pins.
AUBTM-22 product datasheet page 11 of 16 ?austar technology 2007 7 electrical specification: radio characteristics min typ max unit output power -11 2.5 14 dbm power control range - 35 - db power control step - 0.5 - db operation current 70 170 ma sensitivity -80 -70 dbm supply voltage(vdd) 2.7 3.3 3.7 v digital terminal input voltage min typ max unit vil input logic level low (vdd=3.3v) -0.4 +0.8 v vih input logic level high 0.7vdd vdd+0.4 v digital terminal output voltage vol output logic level low (vdd=3.3v) (lo = 3.0ma) 0.2 v vol output logic level high (vdd=3.3v) (lo = -3.0ma) vdd-0.2 v input and tri-state current with: min typ max unit strong pull-up -100 -40 -10 a strong pull-down +10 +40 +100 a weak pull-up -5.0 -1.0 -0.2 a weak pull-down +0.2 +1.0 +5.0 a i/o pad leakage current -1 0 +1 a ci input capacitance 1.0 - 5.0 pf usb terminals characteristics min typ max unit vdd_usb for correct usb operation 3.1 3.6 v input threshold vil input logic level low - - 0.3vdd v vih input logic level high 0.7vdd - - v input leakage current vss < vin < vdd -1 1 5 a ci input capacitance 2.5 - 10.0 pf output voltage levels to correctly terminated usb cable vol output logic level low 0.0 - 0.2 v
AUBTM-22 product datasheet page 12 of 16 ?austar technology 2007 voh output logic level high 2.8 - vdd v auxiliary adc min typ max unit resolution - - 8 bits input voltage range (lsb size = vdd/255) 0 - vdd v inl -1 - 1 lsb accuracy(guaranteed monotonic) dnl 0 - 1 lsb offset -1 - 1 lsb gain error -0.8 - 0.8 % input bandwidth - 100 - khz conversion time - 2.5 - s sample rate(2) - - 700 samples/s
AUBTM-22 product datasheet page 13 of 16 ?austar technology 2007 8 soldering 8.1 manual soldering tba 8.2 reflow soldering the soldering profile depends on various parameters necessitating a set up for each application. the data here is given only for guid ance on solder re-flow. there are four zones: 1. preheat zone - this zone raises the te mperature at a controlled rate, typically 1-2.5c/s. 2. equilibrium zone - this zone brings the board to a uniform temperature and also activates the flux. the duration in this zone (typically 2-3 minutes) will need to be adjusted to optimize the out gassing of the flux. 3. reflow zone - the peak temperature shou ld be high enough to achieve good wetting but not so high as to cause component disc oloration or damage. excessive soldering time can lead to intermetallic growth which can result in a brittle joint. 4. cooling zone - the cooling rate should be fast, to keep the solder grains small which will give a longer lasting joint. typical rates will be 2-5c/s. 5. solder re-flow profile for devi ces with lead-free solder balls composition of the solder ball: sn 95.5%, ag 4.0%, cu 0.5%
AUBTM-22 product datasheet page 14 of 16 ?austar technology 2007 figure 34: reflow solder profile key features of the profile: ? initial ramp = 1-2.5c/sec to 175c25c equilibrium ? equilibrium time = 60 to 180 seconds ? ramp to maximum temperature (250c) = 3c/sec max. ? time above liquidus temperature (217c): 45-90 seconds ? device absolute maximum reflow temperature: 260c devices will withstand the specified profile. le ad-free devices will withstand up to three reflows to a maximum temperature of 260c.
AUBTM-22 datasheet austar technology page 15 of 16 revision history date version description jun 20, 2006 a preliminary publication aug 16, 2007 b restructure of the document july 24, 2008 c pin layout modification
AUBTM-22 datasheet austar technology page 16 of 16 notes austar technology (austar) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and serv ices at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. all products are sold subject to austar?s terms and conditions of sale supplied at the time of order acknowledgment. austar warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with austar?s standard warranty. testing and other quality control techniques are used to the extent austar deems necessary to support this warranty. except where mandated by government requirements, te sting of all parameters of each product is not necessarily performed. austar assumes no liability for applications assistance or customer product design. customers are responsible for their products and applications using austar components. to minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. austar does not warrant or represent that any license, eith er express or implied, is granted under any austar patent right, copyright, mask work right, or other austar intellectual property right relating to any combination, machine, or process in which austar products or services are used. information published by austar regarding third-party products or services does not constitute a license from austar to us e such products or services or a warranty or endorsement thereof. use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from austar under the patents or other intellectual property of austar. reproduction of information in austar data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warr anties, conditions, limitations, and notices. reproduction of this information with alteration is an unfair and deceptive business practice. austar is not responsible or liable for such altered documentation. resale of austar products or services with statements different from or beyond the parameters stated by austar for that product or service voids all express and any implied warranties for the associated austar pr oduct or service and is an unfair and deceptive business practice. austar is not responsible or liable for any such statements. life support policy and use in safety-critical applications austar?s products are not authorized for use in life-support or safety-critical applications. use in such application is done at the sole discretion of the customer. austar will not warrant the use of its devices in such applications. rohs compliance AUBTM-22 meets the requirements of directive 2002/95/ec of the european parliament and of the council on the restriction of hazardous substance (rohs).

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