PreliminaryDLBM-CH120 DLBM-CH120 Bluetooth TM Module Class 2DLBM-CH120 Block DiagramDLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 Audio service indicator output to host (or to hardware select features): configurable for each profile PIO[3] CLOCK_REF PIO[5] DATA_SEL* PIO[11] CLOCK_SEL2 DLBM-CH120 DLBM-CH120 BTMDLBM-CH120 DLBM-CH120 requires the following hardware connections: Serial communications port with or without hardware flow control. PCM interface for audio gateway profile.DLBM-CH120 is designed to connect to the existing audio and data connections which or almost always made available on any mobile phone. This removes the need for any baseband software modifications on the part of the host controller since these connections already exist. The mobile phone designer need simply design a Bluetooth Man-Machine interface in order to do the following functions: l Bluetooth Neighborhood inquiry l Select, enter PIN and pair with a remote device l Show the status of a currently connected Bluetooth service. l Limited control of the Bluetooth link i.e. SCO creation (automatic option also available), in-band / out-of band ring determination etc. Since all the profiles are handles on DLBM-CH120 and a simple AT command set is utilized, there is minimal effort and time to market for the mobile phone company.DLBM-CH120 is initially turned on, the DLBM-CH120 firmware will request configurations data from the host using the +CCFG command. The host will download the PSKEYS, Bluetooth address and friendly name at this point and when it has finished configuring the device, will initiate a warm reset via the BCCMD interface. Data Sheet April 20, 2005 Proprietary Information and Specifications are Subject to ChangeDLBM-CH120 DLBM-CH120 DLBM-CH120 ,0008 OKDLBM-CH120 Event Start Initialization,0008,,0008DLBM-CH120 reset with new values in RAMDLBM-CH120 DLBM-CH120 as sent the +CRREG request command. Once the device registration command has been sent from the host, the host must wait for the OK response from the DLBM-CH120 before registering the next device. Phone Event,DLBM-CH120 Event Initialization completed,DLBM-CH120 DLBM-CH120 with external remote devices is done as follows: Mobile Phone HostDLBM-CH120 DLBM-CH120 sends the PIN code to the remote deviceDLBM-CH120 sends the result of the paring process to the hostDLBM-CH120 message will be sent to the host indicating why an inquiry is finished. This may be due to inquiry cancellation (e.g. when the user selects a device in the middle of an inquiry), Inquiry complete when the inquiry timer has expired, or maximum number of responses has been received.DLBM-CH120 DLBM-CH120 , 1,1DLBM-CH120 can answer automatically (PSKEY_USR11 : 8)DLBM-CH120 establishes a HV3 SCO connectionDLBM-CH120 indicates SCODLBM-CH120 receives AT+CKPD = 200 commandDLBM-CH120 removes SCO connectionDLBM-CH120 DLBM-CH120 removes RFComm link lost RFC connectionDLBM-CH120 DLBM-CH120 DLBM-CH120 will attempt a connection unless a service level connection already existsDLBM-CH120 opens audio path DLBM-CH120 indicates SCO status DLBM-CH120 indicates button press User answers call Audio path open Headset plays in band ring tone from phoneDLBM-CH120 receives AT+CKPD = 200DLBM-CH120 removes Audio lost SCO connectionDLBM-CH120 DLBM-CH120 supports the following data services l l l l Serial Port Profile (+CPROFILE = 2) Dial-up networking (+CPROFILE = 3) Handsfree Profile (+CPROFILE = 4) Fax (+CPROFILE = 5),0. Thereafter the service type will be indicated with +CPROFILE=. At this point, DLBM-CH120 will route all traffic passing over the RFComm layer directly to the UART and vice versa. Therefore, all "Fone Suite" applications will run over the serial port profile allowing the use of features such a sync, SMS, calendar etc over Bluetooth. Dial-up networking and fax operations will also directly route the RFComm traffic over UART, therefore all modem settings for the mobile phone will be configured on the remote device configuration settings. When a service is disconnected, DLBM-CH120 will indicate the removal of the service level connection with +CRFCSTAT=,3.DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 does not process any commandsDLBM-CH120 DLBM-CH120 will initiate two actions: * Change the mode state hardware output according to the setting is PSKEY_USR18. It will also issue the data stored in PSKEY_USR32 (SPP service connected), PSKEY_USR33 (DUN service connected) or PSKEY_USR35 (Fax service connected) which may be required by certain mobile phones to switch modes. * Immediately create a direct link between the UART data and RFComm data. At this point, the DLBM-CH120 is not involved in any data between the two devices.DLBM-CH120 DLBM-CH120 It is possible to change the default states to the following: * Make DLBM-CH120 idle. This is accomplished by sending the AT+CCNR command. This will cancel the last operation and switch off the BlueCore radio. * Make DLBM-CH120 discoverable. This is accomplished by sending the AT+CDIS= command to BlueCore. This will set-up a page and inquiry scan process so that the device is discoverable and connectable to other Bluetooth devices. This has the disadvantage of increasing the power consumption of DLBM-CH120 . If Use Authentication is set then the DLBM-CH120 will request a PIN on first connection to the remote device. * Make DLBM-CH120 connectable. This is accomplished by sending the AT+CCSR= command to device. This will set-up a page scan process only so that the device is only connectable to other Bluetooth devices which know it's address already. If Use Authentication is set then the firmware will request a PIN on first connection to the remote device.DLBM-CH120 DLBM-CH120 software by sending a AT+CRST command. This causes the software to panic and then relies on the watchdog timer to reset the device.DLBM-CH120 DLBM-CH120 uses a specific set off instructions to cause the device to exit out of deep sleep. The software recognises the AT command "AT+CWUP" from the host and will respond with a " WAKEOK= DLBM-CH120 will be awake and is sent in millisecond units. Therefore the host does not have to send AT+CWUP commands during this period. To reduce latencies, it is possible to re-transmit the second AT+CWUP command within 100ms of the first AT+CWUP command since there will be a high probability that DLBM-CH120 would now be awake. Thereafter it is suggested to wait at least 5000ms between subsequent AT+CWUP commands in order for DLBM-CH120 to respond.DLBM-CH120 DLBM-CH120 is able to receiveDLBM-CH120 DLBM-CH120 is in deep sleepDLBM-CH120 to exit deep sleep with corrupt data in the Uart. Timer starts to keep DLBM-CH120 awakeDLBM-CH120 is in shallow sleep AT+CWUP DLBM-CH120 decodes Wakeup Command and starts 500mS wakeup timer DLBM-CH120 restarts 5000mS timer on each UART event DLBM-CH120 restarts 5000mS timer on each UART eventDLBM-CH120 may now enter deep sleepDLBM-CH120 ,1 from host and Automatically disconnect SCO on receipt of +CIEV:,0 from hostDLBM-CH120 DLBM-CH120 and rely on the mobile phone to respond to these messages. All responses are passed directly to the hands free kit. All other operation relating to service level connection and Bluetooth operation is handled by DLBM-CH120 . In handset mode, some of these commands will be passed to the phone host for interpretation such as AT+BVRA = for voice recognition activation and AT+NREC= for noise cancellation request.DLBM-CH120 firmware will simply act as a feed through for the commands and responses. Therefore, commands such as CMER, CIND, ATA, AT+CHUP, ATD etc are not issued by DLBM-CH120 but by the Hands Free kit. It is still possible, however, to add more functionality to the Bluetooth hands free profile by emulating some of the Bluetooth commands into a mode that the phone supports, e.g. AT+BVRA=1 would initiate a voice tag dial in a Bluetooth phone. In order to set up the supported features list to be sent with the SDP record, PSKEY_USR7 stores the Supported Features list in the same order as expected by the Hands Free Profile i.e.DLBM-CH120 DLBM-CH120 to initiate a long pulse sequence) In-Band Ring Tone. (If enabled will force an Audio SCO Connection on incoming calls) Attach phone number to tag (Not supported)DLBM-CH120 requests registration of these devices using +CRREG command. The host can then register the devices at any time, keeping in mind that any device not registered, attempting to connect with the Handphone would require authentication. Therefore, If a device is not a registered device, DLBM-CH120 will go through the process of requesting a PIN, and if successful, will respond with the +CLINK=,DLBM-CH120 security manager by issuing the AT+CTDDEL = command. This Bluetooth address will thereafter be deleted from the registry. The management of the trusted device list is kept within the host, therefore the host may decide how many trusted devices to hold, and may change the name of the remote device name if so required.DLBM-CH120 ,". It is possible to connect directly to a device without pairing by issuing the command AT+CMMR=Bluetooth address,, . If authenticate is set then DLBM-CH120 will expect a pin code to be issued during the connection process therefore to establish an un-secure connection, the authenticate field must be set to 0 for unauthenticated connections. The service you wish to connect to will be put into as follows: 1 - Headset Profile 2 - Serial Port Profile 3 - Dial-up Network Profile 4 - Hands free profile 5 - Fax Profile Once connection to the remote device is established, the normal status commands will be issued by DLBM-CH120 to the host to indicate the status of the connection. Please note that one cannot use the AT command set when the DLBM-CH120 is in data mode (i.e. DUN, SPP or FAX) since the UART and RFComm links are directly connected. If the link has to be disconnected by the DLBM-CH120 , then the disconnect I/O must be used to disconnect the RFComm link.DLBM-CH120 ,, 13.16 Configuring PIO assignments The PIO's for DLBM-CH120 can be dynamically configured via PSKEY_USR17 as follows: PIO[0] 0001 PIO[1] PIO[2] PIO[3] PIO[4] PIO[5] PIO[6] PIO[7] PIO[8] PIO[9] PIO[10] PIO[11] 0002 0004 0008 0010 0020 0040 0080 0100 0200 0400 0800DLBM-CH120 DLBM-CH120 is connected to. These indicators are as set up using PSKEY_USR_18 as follows: B7 *1 B6 X B5 Fax B4 Hands Free B3 DUN B2 SPP B1 Headset B0 Default when idle or in Page ScanDLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120 DLBM-CH120
