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DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

DLBM-CG121
Bluetooth Module Class 2

A Class 2 Bluetooth module suitable
for cellular phone, smart phone
applications.

1.FEATURES:

Support DUN, SPP, AG & FAX profiles.

Minimal software effort to own Bluetooth functions.

Almost no resource required from host CPU.

Reducing the size and thickness greatly by using high-density
packaging technology.

Compliant to various interfaces: UART, USB, PCM ...etc.

Wide operating temperature range: -30~+80

2.Device diagram

Figure 1. DLBM-CG121 Block Diagram

BC 3-H andphone

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DLBM-CG121

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3.General Specification

Bluetooth Specification

Version 1.1

Frequency

2402~2480MHz

Modulation

FHSS/GFSK

Transmission rate

721kbps

Receive sensitivity

-80dBm

Maximum output power

+4dBm(Class 2)

Operating Voltage

1.8V or 2.2~3.6V

Operating temperature

-30~+80

Antenna Impedance

50 ohm

Package size

9.1*7.9*1.6mm

Operating range

> 10 meters

4.Rating

Min

Max

Unit

Storage Temperature

-40 +85

VDD_1.8V

-0.4 +1.9

VDD_IO

-0.4 +3.6

VREG_IN

-0.4 +3.6

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DLBM-CG121

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5.Interface

Interface Description

Antenna

External Antenna 50 ohm

UART Interface

TX,RX,RTS,CTS(9600bps~1.5Mbps)

SPI Interface

Synchronous Serial Interface for firmware download

PIO Interface

8 terminals

6.Power Supply Diagram

Figure 2. Power Supply Diagram

Terminal

3.0V Power Supply

1.8V Power Supply

VDD_1.8V

1.7 to 1.9V

VDD_IO

1.7 to 3.6V

1.7 to 1.9V

VREG_IN

2.2 to 3.6V

A N T

X 'tal

BPF

V D D _1.8V

BC 2-R O M

V D D _IO

V R EG _IN

Balun

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DLBM-CG121

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7.RF Characteristics

Operating Condition: +25, VDD=1.8V

RF Characteristics

Min.

Typ.

Max.

Unit

1. Frequency Range

2400 ~ 2483.5

MHz

2. Output Power

dBm

3. Sensitivity at 0.1% BER

1) 2402MHz

-80

dBm

2) 2441MHz

-80

dBm

3) 2480MHz

-80

dBm

4. Maximum Input Level (BER0.1%)

dBm

5. Adjacent channel selectivity

1) C/I F=F

+ 1MHz

-4

2) C/I F=F

- 1MHz

-4

3) C/I F=F

+ 2MHz

-35

-30

4) C/I F=F

- 2MHz

-21

-20

5) C/I FF

+ 3MHz

-45

6) C/I FF

- 5MHz

-45

7) C/I F=F

Image

-18

-9

6. Adjacent channel transmit power

1) F=F

� 2MHz

-35

dBc

2) F=F

� 3MHz

-55

dBc

7. Modulation Characteristics

1) Modulation f1avg

165

kHz

2) Modulation f2max

155

kHz

8. Initial Carrier Frequency Tolerance

1) 2402MHz

-75

-3

kHz

2) 2441MHz

-75

-7

kHz

3) 2480MHz

-75

-14

kHz

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DLBM-CG121

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9. Carrier Frequency Drift

1) 1slot

kHz

2) 5slot

kHz

4) Drift rate

KHz/50us

10. 20dB Bandwidth for modulated carrier

1) 2402MHz

879

KHz

2) 2441MHz

816

KHz

3) 2480MHz

819

KHz

11.C/I co - channel

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DLBM-CG121

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9. PIO Setting

� AUDIO_SEL and DATA_SEL � hardware signal profile identifier
� PWR_UP � used as a wake up pulse before UART communications
� DISCONNECT SIGNAL � hardware RFComm disconnect input
� PIO[11] 16MHz clock select
� PIO[2] LED display

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DLBM-CG121

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10. Basic Embedded Architecture

11.Hardware connection

DLBM-CG121 requires the following hardware connections:

Serial communications port with or without hardware flow control.

PCM interface for audio gateway profile.

H O ST

D LBM -C G 121

MMI

AT interpreter

UART

Digital Audio

Profiles

Audio Gateway

Dial-up Networking

Serial Port

FAX

AT interpreter

UART

Digital Audio

AT C om m ands

PC M

Figure 5. Embedded Architecture

BTM

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DLBM-CG121

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12. Mobile Phone Host requirements

The DLBM-CG121 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:

Bluetooth Neighborhood inquiry

Select, enter PIN and pair with a remote device

Show the status of a currently connected Bluetooth service.

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-CG121 and a simple AT command set is

utilized, there is minimal effort and time to market for the mobile phone company.

13. Software architecture

13.1 Initialization and start-up
When DLBM-CG121 is initially turned on, the DLBM-CG121 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.

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DLBM-CG121

Data Sheet

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ATEO

"O K " Received?

D elay 1s

Request configuration

from host (+CCFG )

Figure 6. Software Architecture

RESET

H ost sets up supported profiles list,

Bluetooth address, friendly nam e

and other required PSK EY S

H ost initiates w arm reset via BCCM D

N o

Yes

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13.2 Setting PSKeys
Setting the PSKEYS consist of three elements in the AT+SETPS command. These elements
are:

The Pskey address which is a four digit word formatted in ASCII that represents the
address of the key to be set. Therefore, to change the contents of address 0x0108, this
field will be set to "0108".

The data string which is made up of multiples of four digit words. These word will be filled in
the respective PSKey address's data field. E.g. "000112349876" will enter the word 0001
1234 9876 into the selected PSKEY.

The store type. Typically this should be set to 8 to select the Ram are of PSKEYS.

An example of setting the PSKEYS is to set the crystal frequency trim :-

AT+SETPS=01f6,001d,0008.

To set a string value such as the friendly name, the host must prefix the data field with `s' i.e.
AT+SETPS =0108,sHandphone,0008. This will change the friendly name to "Handphone"

To read a PSKEY, the host must use the AT+GETPS command e.g. AT+GETPS=01f6 will
return the crystal frequency trim value.

To initiate a warm reset, the host must use the BCCMD protocol using the varid 0x4002 e.g.
AT+BCCMD=4002,0002,0000.

One of the field that must be set is the supported profiles list or PSKey address 0x028d

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13.3 Supported profiles list (0x028d)
During the configuration process, the host must set up the supported profile list in
PSKEY_USR_3 as follows:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reserved Reserved Reserved Fax Handsfree

DUN

SPP

Headset

Setting the respective bit will cause this profile to be registered after the warm reset.

Phone Event

DLBM-CG121 Event

Set Bluetooth

address

Set friendly nam e

Start Initialization

Set Bluetooth address

Set friendly nam e

Set other required

PSK EY S

Initiate w arm reset

D LBM -CG 121 reset w ith

new values in RA M

+CCFG

AT+SETPS=0001,<bd,addr>,0008

O K

AT+SETPS=0108,s<nam e>,0008

O K

AT+SETPS=<key>,<data>,0008

O K

AT+BCCM D =4002,0002,0000

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DLBM-CG121

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13.4 Device Registration process
Once the configuration process has completed, and the warm reset has been initiated, the host
must register the trusted devices with the firmware. The host can register devices at any time
after the DLBM-CG121 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-CG121 before registering the next device.

Phone Event

DLBM-CG121 Event

Retrieve first

trusted device

Retrieve trusted

device n

Initialization com pleted

w ith link key[0]

w ith link key[n]

+CRREG

AT+CREG =<bd_addr[0]>,<link key[0]>

O K

AT+CREG =<bd_addr[n]>,<link key[n]>

O K

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DLBM-CG121

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13.5 Pairing Process
The sequence to pair the DLBM-CG121 with external remote devices is done as follows:

M obile Phone H ost

U A R T

D LBM -C G 121 C om m ents

Search BT N eighborhood

AT+CIQ R = (1, 2),(1-8)

O K

Start Inquiry

1- A udio D evices

A ll D evices

1-8 � no of returns

D evices Found

N am e 1

N am e 2

N am e 5

+CIN Q RES = nam e 1 ,

bd_addr 1

Inquiry Result indication Receive responses

Select a device e.g nam e 2

N am e 2

PIN : ****

U ser enters the PIN code

1234

N am e 2

N am e 2 paired

successfully

AT+CPRR = bd_addr 2

O K

+CPIN REQ = bd_addr 2

AT+CPCR = bd_addr 2, 1234

+CPIN CFM = (0 - 4),

<link_key>

Starts Paring process

w ith bd_addr 2

A sk for PIN from host

D LBM -CG 121 sends the

PIN code to the rem ote

device

D LBM -CG 121 sends the

result of the paring

process to the host

Rem ote device

request a PIN code

If PIN is correct

pairing successful

otherw ise failure

+CIN Q RES = nam e 2 ,

bd_addr 2

+CIN Q RES = nam e n ,

bd_addr n

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A "+CINQCFM=<status> 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.

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DLBM-CG121

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13.6 Incoming call is received (out-of-band ring used)

M obile Phone H ost

U A R T

D LBM -C G 121

C om m ents

Handphone will attempt a

connection

Connect request with

device bd_addr

Connect request

to headset

AT+CCMR=<bd_addr>

, 1,1

Bluetooth connection

established

Headset Profile

Incoming Call

Call answered

+CRFCSTAT=bd_addr,0

RFComm connection
established

+CPROFILE = 1

RING

Send Ring command

Headset plays ring

sequence

+CKPD=200

DLBM-CG121 can

answer automatically

(PSKEY_USR11 : 8)

User answers call

If +CKPD = 200 then

ask for SCO

DLBM-CG121
establishes a HV3 SCO
connection

Audio path open

+CSCOSTAT=0

DLBM-CG121 indicates

SCO

Call Disconnected

+CKPD=200

DLBM-CG121 receives

AT+CKPD = 200

command

AT+CASR=0

User disconnects call

Phone indicates call

disconnection

NO CARRIER

DLBM-CG121 removes
SCO connection

Audio lost

+CSCOSTAT=3

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DLBM-CG121

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13.7 Incoming call is received (in-band ring used)

M obile Phone H ost

U A R T

D LBM -C G 121

C om m ents

Incoming Call

AT +CCMR=bd_addr,1,1

Connect request with

bd_addr

DLBM-CG121 will attempt

a connection unless a

service level connection

already exists

Bluetooth connection

established

+CRFCSTAT=bd_addr,0

RFComm connection

established

Headset profile

+CPROFILE=1

Incoming Call

RING

DLBM-CG121 opens

audio path

Audio path open Headset

plays in band ring tone

from phone

+CSCOSTAT=0

DLBM-CG121
indicates SCO status

Call answered

+CKPD=200

DLBM-CG121 indicates

button press

User answers call

Call Disconnected

+CKPD=200

DLBM-CG121 receives

AT+CKPD = 200

command

User disconnects call

Phone indicates call
disconnection

NO CARRIER

DLBM-CG121 removes
SCO connection

Audio lost

Bluetooth connection
lost e.g. out of range

+CSCOSTAT=3

+CRFCSTAT=bd_addr,3

Example of user goes

out of range

RFComm link lost

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DLBM-CG121

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13.8 Data services

The DLBM-CG121 supports the following data services

Serial Port Profile (+CPROFILE = 2)

Dial-up networking (+CPROFILE = 3)

Handsfree Profile (+CPROFILE = 4)

Fax (+CPROFILE = 5)

The default state of the firmware is to always be in idle. Therefore to put the device into
connectable mode, the host must issue the AT+CCSR command.

On connection of a service from a remote devices, the firmware will indicate the status of the
service level connection with +CRFCSTAT = <bd_addr>,0. Thereafter the service type will be
indicated with +CPROFILE=<service>.

At this point, DLBM-CG121 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-CG121 will indicate the removal of the service level
connection with +CRFCSTAT=<bd_addr>,3.

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13.9 SPP, DUN and Fax connections

When the Dial-up Networking, SPP or FAX profiles are activated, DLBM-CG121 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-CG121 is not involved in any data between the two devices.

M obile Phone H ost U A

R T

D LBM -C G 121

C om m ents

Bluetooth connection

established

+CRFCSTAT=bd_addr,0

RFComm connection
established

SPP,Dial-up or Fax
service connects to

D LBM -CG 121

SPP,DUN,Fax Profile

+CPROFILE=(2,3,5)

Start 200ms timer to

flush buffers

RFComm traffic routed

directly to UART and

vice versa

D LBM -CG 121

does not

process any commands

Direct communications

with remote device

RFComm Disconnect

Request

PAIR I/O momentarily

pulled high to

disconnect RFComm

RFCom m disconnected

Remote user disconnects

service

UART data now available

D LBM -CG 121

Bluetooth connection

lost

+CRFCSTAT=0.3

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On disconnection of the RFComm link, the mode state hardware output will change to the
default mode and issue the data stored in PSKEY_USR30

To ensure that the mobile phone does indeed disconnect on the loss of an RFComm link,
PSKEY_USR36 can be used to store the text string that will unconditionally disconnect the
phone from the network (e.g +++ATH\r). An alternative method is to use the DATA_SEL I/O
which will invert state for a period of 1s after the RFComm link has been lost. This can be used
to simulate disconnection of a data service.

For the list of DUN and FAX commands, refer to DUN and FAX profile specification from the
Bluetooth SIG.

13.10 Changing the default states of BlueCore2/3-Gateway
It is possible to change the default states to the following:

�

Make DLBM-CG121 idle. This is accomplished by sending the AT+CCNR command. This will

cancel the last operation and switch off the BlueCore radio.

�

Make DLBM-CG121 discoverable. This is accomplished by sending the AT+CDIS= <use

authentication> 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-CG121. If Use Authentication is
set then the DLBM-CG121 will request a PIN on first connection to the remote device.

�

Make DLBM-CG121 connectable. This is accomplished by sending the AT+CCSR=<use

authentication> 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.

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13.11 Using Low Power Modes with the AT command set

Since the standard UART protocol does not allow for the retry of transmission when information
is lost over the UART, DLBM-CG121 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= <expected minimum wakeup time". Therefore the host can issue the AT+CWUP
command repetitively until it receives the WAKEOK command response. The parameter which
is associated with the response, indicates the minimum time that the DLBM-CG121 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-CG121 would now be awake. Thereafter it is suggested to wait at least
5000ms between subsequent AT+CWUP commands in order for DLBM-CG121 to respond.

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Data Sheet

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M obile Phone H ost U A

R T

D LBM -C G 121

C om m ents

Host wishes to send

a command to

D LBM -CG 121

is in

deep sleep

Communications causes

D LBM -CG 121

to exit deep

sleep with corrupt data in
the Uart. Timer starts to
keep

D LBM -CG 121

awake

It is not sure if

D LBM -CG 121

is able

to receive

AT+CWUP

D LBM -CG 121

is in

shallow sleep

No Response so

resend Wakeup

command

AT+CWUP

D LBM -CG 121

decodes

Wakeup Command

and starts 500mS

wakeup timer

WAKEOK=500ms

Host can now send

command within

500mS

AT+XXXX

D LBM -CG 121

restarts

5000mS timer on each
UART event

Host sends next

command within the

5000mS period

AT+XXXX

D LBM -CG 121

restarts

5000mS timer on each
UART event

5000mS expires.

D LBM -CG 121

may

now enter deep sleep

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13.12 Improving Execution Time
It is possible to improve the execution time for known events by setting flags in PSKEY_USR11
as follows:

PSKEY_USR11 (Bit

Position)

Function

0-5 Reserved

Automatically connect SCO on receipt of ATA from Handsfree
device

Automatically disconnect SCO on receipt of AT+CHUP from
Handsfree device

Automatically connect SCO on receipt of AT+BVRA=1 from
Handsfree device

Automatically connect SCO on receipt of AT+CKPD=200 from
Headset device

Automatically connect SCO on receipt of +CIEV:<call>,1 from
host and
Automatically disconnect SCO on receipt of +CIEV:<call>,0 from
host

13.13 Hands Free Operation

In order for hands free to work correctly there must be a serial link to the GSM phone supporting
the GSM07.07 generic commands for hands free operation. These include the following:

ATA

AT+CHUP

ATDdd..dd;

ATD>nnn;

AT+CCWA

+CCWA

AT+CHLD

AT+CIND=?

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AT+CIND?

AT+CLIP

+CLIP

AT+CMER

+CIEV

The above commands are not interpreted by DLBM-CG121 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-CG121

. In handset mode, some of these commands will be passed to the phone host for

interpretation such as AT+BVRA = <n> for voice recognition activation and AT+NREC=<n> for
noise cancellation request.

13.13.1 Bluetooth Hands Free Profile

The Bluetooth Hands Free profile is a mixture of analogue and data services. On connection of
a Hands Free kit to the phone, the mode state will be Audio. Therefore a phone not supporting
audio and data services simultaneously will not be able to support Bluetooth Hands free
operation.

The majority of commands used by the Hands Free profile are based on the GSM07.07 AT
command set. For all these commands,

DLBM-CG121

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-CG121

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.

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PSKEY_USR7(Bit Position) Function

0 Three

way

calling

Echo cancellation or noise reduction (Unlikely to be supported)

Voice Recognition Function (is enabled will cause

DLBM-CG121

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)

13.14 Managing the Trusted Device List

Support has been included to manage the trusted device list. The commands associated with
this process are as follows:

Registering trusted devices stored within the host. This is done after DLBM-CG121 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-CG121 will go through the process of
requesting a PIN, and if successful, will respond with the +CLINK=<bd_addr>,<link key>
response to inform the host of the new devices' link key and address. It would be up to the host
to decide whether to add this device to it's trusted device list or not.

Once the device have been registered, they may be removed from DLBM-CG121 security
manager by issuing the AT+CTDDEL = <bd_addr> 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.

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13.15 Initiating Connections

It is possible for the host to initiate a connection to a device as follows:

13.15.1 Devices found during inquiry

After completion of inquiry search, a list of devices will have been sent to the host using
"+CINQRES=<name>,<Bluetooth address>". It is possible to connect directly to a device
without pairing by issuing the command AT+CMMR=Bluetooth address,<authentica>, <profile>.

If authenticate is set then DLBM-CG121 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 <Profile> 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-CG121

to the host to indicate the status of the connection.

Please note that one cannot use the AT command set when the DLBM-CG121 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-CG121, then the disconnect I/O must be
used to disconnect the RFComm link.

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13.15.2 Connecting to devices in the trusted device list

Connecting to devices in the trusted device list follows the same procedure as above, but the
source will come from the hosts trusted device list. AT+CMMR=<db_addr in trust device
list>,<authenticate>,<profile>

13.16 Configuring PIO assignments

The PIO's for DLBM-CG121 can be dynamically configured via PSKEY_USR17 as follows

PIO[0] PIO[1] PIO[2] PIO[3] PIO[4] PIO[5] PIO[6] PIO[7] PIO[8] PIO[9] PIO[10] PIO[11]

0001 0002

0004 0008

0010 0020 0040 0080 0100 0200

0400 0800

PSKEY_USR17 consists of four words. Each word is assigned a function as follows:

Word 1 (most significant

word)

Word 2

Word3

Word 4

Audio service indicator

output

Service disconnect

input

Data service

indicator output

Host communications

wake up signal

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

13.17 Input / output indicators for service connections

There are two indicator outputs which are used to indicate when the service

DLBM-CG121

connected to. These indicators are as set up using PSKEY_USR_18 as follows:

B7 B6 B5 B4 B3 B2 B1 B0

*1 X Fax

Hands

Free

DUN SPP

Headset

Default

when idle

or in Page

Scan

Note *1)Word 1 � Pulse DATA_SEL line when RFComm lost during DUN, FAX and SPP
Word 2 � Use UART WAKEUP pulse

PSKEY_USR_18 consists of two words, The first word sets up the state of the AUDIO_SEL I/O
when in accordance with the above table bit positions. The second word sets up the
DATA_SEL I/O in accordance with he above table bit positions.

These I/O pins can be used to hardware select features or as indications into a host processor.

If Bit 7 is set then DATA_SEL line will pulse high then low for a period of at least 20ms and then
return to the original state. This can be used to wake up a host if necessary.

For example PSKEY_USR18 = 0013 003c sets up I/O's as follows:

AUDIO_SEL State = 0x0013 :

Idle High
Headset High
SPP Low
DUN Low
Hands Free

High

Fax Low

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

DATA_SEL state = 0x003c

Idle Low
Headset Low
SPP High
DUN High
Hands Free

High

Fax High

Setting bit 7 (0x80) of this word will generate a minimum 20ms pulse on the PWR_UP I/O. This
can be used if the phone requires a wakeup before Uart communications.

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

14 List of PSKEYS

PSKEY Function

Comments

Supported profiles

Bit 0 � Headset profile
Bit 1 � Serial port profile
Bit 2 � Dial-up networking profile
Bit 3 � Handsfree profile
Bit 4 � Fax profile

Hands Free Supported
Features

Described earlier

Time for host communication
wakeup
signal

In 1ms increments � Time for wake-up pulse to
ensure
host is ready to receive data

General Flags

Bit 0 � Default SCO Flag (0-HV3, 1 HV1)
Bit 1 � phone uses in-band ringing for headset
Bit 2 � Reserved
Bit 3 � Reserved
Bit 4 � Reserved
Bit 5 � Use 1.28s page scan interval
Bit 6 � Automatic SCO creation on ATA
Bit 7 � Automatic SCO disconnection on
AT+CHUP
Bit 8 - Automatic SCO creation on AT+BVRA=1
Bit 9 - Automatic SCO creation on
AT+CKPD=200
Bit 10 � Control SCO on call status events

Sniff mode parameters

Max interval, min interval, attempts, timeout

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

PIO configuration settings

Word 1 � Audio service indicator output
Word 2 � Disconnect service input
Word 3 � Data service indicator output
Word 4 � Host wakeup signal

Default AT String

Sent to phone when service disconnected

Headset Mode AT string

Sent to phone when connected to Headset
service

SPP Mode AT string

Sent to phone when connected to SPP service

DUN Mode AT string

Sent to phone when connected to DUN service

Hands Free Mode AT string

Sent to phone when connected to Hands Free
service

Fax Mode AT string

Sent to phone when connected to Fax service

Force Modem Disconnect AT
string

Sent to the phone when a DUN service is
disconnected

Alternative Call Answer string Used if present, otherwise ATA is used

Alternative Call disconnect
string

Used if present, otherwise AT+CHUP is used

Alternate Call Initiate string

Used to generate last number redial or voice tag
via AT commands.

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

15. RECOMMENDED REFLOW PROFILE

The temperature rise to 150 for preliminary heating shall be made for 30 seconds or longer.
The preliminary heating shall be done at the temperature of 160+10 for 60 ~ 90 seconds.
The heating shall be at the temperature of 200 or higher For 20 ~ 40 seconds and the peak
temperature shall be 230+5

Figure 7. REFLOW PROFILE

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

16.Pin description

Pin No.

Name

Description

PIO_11

Programmable I/O terminal

PIO_9

Programmable I/O terminal

PCM_OUT /Synchronous

data

output

PCM_SYNC /Synchronous

data

sync

PCM_CLK /Synchronous

data

clock

PCM_IN /Synchronous

data

input

Gnd

ANT RF

input/output

AIO_0 Programmable

input/output

Gnd

Vdd_1.8V

Refer to Power supply diagram

VREG_IN

Refer to Power supply diagram

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

VDD_IO

Refer to Power supply diagram

USB_DN

USB data minus

USB_DP

USB data plus with selectable internal 1.5k
ohm pull-up resistor

UART_TX

UART data output active high

UART_RX

UART data input active high

UART_CTS

UART clear to send active low

UART_RTS

UART request to send active low

Reset_B Reset

low

PIO_4

Programmable input/output line

PIO_5

Programmable input/output line

PIO_10

Programmable input/output line

PIO_3

Programmable input/output line

Gnd

PIO_2

Programmable input/output line

PIO_1

Programmable input/output line

PIO_0

Programmable input/output line

Preliminary

DLBM-CG121

Data Sheet

July 30, 2004

Proprietary Information and Specifications are Subject to Change

18. Layout Guide

U nit: m m

D on't place the ground on the top

layer (Inside area)

D o not place any copper foil

on the top layer (Inside area)

Figure 9. Land Pattern

Figure 10. Layout Example

Side V iew

D LBM -C**2*

G round V IA

M ain G round plant

5m il

Электронный компонент: DLBM-CG121