DLBM-CH120 Datasheet, PDF (20/40 Pages) Delta Electronics, Inc. – Bluetooth Module Class 2

Preliminary
DLBM-CH120
13.9 SPP, DUN and Fax connections
Mobile Phone Host
Bluetooth connection
established
SPP,DUN,Fax Profile
UA RT
+CRFCSTAT=bd_addr,0
+CPROFILE=(2,3,5)
DLBM-CH120
RFComm connection
established
Comments
SPP,Dial-up or Fax
service connects to
DLBM-CH120
Start 200ms timer to
flush buffers
Direct communications
with remote device
RFComm traffic routed DLBM-CH120 does not
directly to UART and process any commands
vice versa
PAIR I/O momentarily
pulled high to
disconnect RFComm
Bluetooth connection
lost
+CRFCSTAT=0.3
RFComm Disconnect
Request
RFComm disconnected
Remote user disconnects
service
UART data now available
to DLBM-CH120
When the Dial-up Networking, SPP or FAX profiles are activated, 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.
Data Sheet
April 20, 2005
Proprietary Information and Specifications are Subject to Change
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