Wireless
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authenticate the pairing devices. Also worthy of note is the limited range and fast frequency hopping of the
Bluetooth radios that makes long-distance eavesdropping difficult.
Recommendations are:
• Perform pairing in a secure environment
• Keep PIN codes private and do not store the PIN codes in the device
• Implement application-level security.
Bluetooth Profiles
The MC33XX supports the following Bluetooth services:
• Service Discovery Protocol (SDP) - Handles the search for known and specific services as well as general
services.
• Serial Port Profile (SPP) - Allows use of RFCOMM protocol to emulate serial cable connection between
two Bluetooth peer devices. For example, connecting the device to a printer.
• Object Push Profile (OPP) - Allows the device to push and pull objects to and from a push server.
• Advanced Audio Distribution Profile (A2DP) - Allows the device to stream stereo-quality audio to a wireless
headset or wireless stereo speakers.
• Audio/Video Remote Control Profile (AVRCP) - Allows the device to control A/V equipment to which a user
has access. It may be used in concert with A2DP.
• Personal Area Network (PAN) - Allows the use of Bluetooth Network Encapsulation Protocol to provide L3
networking capabilities over a Bluetooth link. Only PANU role is supported.
• Human Interface Device Profile (HID) - Allows Bluetooth keyboards, pointing devices, gaming devices and
remote monitoring devices to connect to the device.
• Headset Profile (HSP) - Allows a hands-free device, such as a Bluetooth headset, to place and receive
calls on the device.
• Hands-Free Profile (HFP) - Allows car hands-free kits to communicate with the device in the car.
• Phone Book Access Profile (PBAP) - Allows exchange of Phone Book Objects between a car kit and a
mobile device to allow the car kit to display the name of the incoming caller; allow the car kit to download
the phone book so the user can initiate a call from the car display.
• Symbol Serial Interface (SSI) - Allows for communication with Bluetooth Imager.
• File Transfer Profile (FTP) - Provides the capability to browse, manipulate and transfer files in file system
of another system. Uses GOEP as a basis.
• Generic Attribute Profile (GATT) - Provides profile discovery and description services for Bluetooth Low
Energy protocol. It defines how attributes are grouped together into sets to form services.
• HID Over GATT Profile (HOGP) - Defines the procedures and features used by Bluetooth low energy HID
Devices using GATT and Bluetooth HID Hosts using GATT.
Bluetooth Power States
The Bluetooth radio is off by default.
• Suspend - When the MC33XX goes into suspend mode, the Bluetooth radio stays on.
• Airplane Mode - When the MC33XX is placed in Airplane Mode, the Bluetooth radio turns off. When
Airplane mode is disabled, the Bluetooth radio returns to the prior state. When in Airplane Mode, the
Bluetooth radio can be turned back on if desired.
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