Texas Instruments orporated CC256XEM User Manual
CC256x QFN EM User Guide
CC256x QFN EM User Guide
This User Guide is intended for use with TI's Bluetooth development platform, the CC256x QFN EM board. This
guide will help you quickly get started with this board to integrate with TI's evaluation platforms and software
SDK's. In addition, this user guide describes the components/configurations of this board to quickly get started with
using this board for various Bluetooth applications.
Introduction to CC256x QFN EM Board
This guide will provide information about the module so you can utilize the board specifics to apply it to your
application. Module information and capabilities including pin descriptions and available software and tools will
enhance your out of box experience.
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Key Features
• Bluetooth Specification v4.0
• Fast Time to Market
• Easy PCB Layout Using Cadence Tools
• 4 Layer PCB design
• Bluetooth & Bluetooth Low Energy or ANT
• StoneStreet One Bluetopia Stack with many profiles
• Other Profiles Available on Request i.e. Audio Profiles
• FCC, IC, BT SIG Compliant
• High sensitivity (-93 dBm typ.)
• Shield enabled for immunity
• H4 UART and PCM/I2S Interface
CC256x QFN EM User Guide
QFN EM Board Applications
Example Embedded Wireless Applications:
• Cable Replacement
• Printer Adapters
• Personal Digital Assistants (PDAs)
• Printers/Scanners
• Computers and Peripherals
• Wireless Sensors
• Industrial Control Applications
• Low Power Medical
Module Description
The CC256x QFN EM board is the development environment for the CC256x family and plugs directly into Texas
Instruments MSP430 and Stellaris experimenter boards with the added benefit of header connectors that simplify
prototype wiring and field trials.
This family is based upon Texas Instrument’s CC256x integrated circuits and uses a Host Controller Interface (HCI),
a cost effective and flexible means to implement a Bluetooth network. HCI reduces BOM cost by eliminating
redundant processing capacity and giving designers the flexibility to work with a controller of their choosing, as the
Bluetooth stack resides and executes on the application
’s host processor.
2
The CC256x QFN EM board is intended for evaluation purpose and works with Texas Instrument’s Hardware
Development Kit. Please refer to
To aid in the implementation of this reference design, schematic and layout files are available on the CC256x Main
Wiki page.
Tools and Software Section.
CC256x QFN EM User Guide
Module Detailed Description
The reference files including schematic, layout, and BOM for the CC256x QFN EM board can be found at the
following link:
CC256x QFN EM v1.2 Reference Design (swrr117)
Below is a block diagram depicting the input/outputs of the QFN board that is required for interfacing to host
controller. These I/O's can be interfaced to the host controller either through the COM connector or the RF1 & RF2
sockets.
[1]
3
Pin Description
Board Jumpers
For correct operation, please make sure both jumpers are placed for connecting power to the device:
Jumper Configuration
Jumper Description
VBAT_CC Main power supply for CC256x
VDD_1V8 Supplies power to CC256x I/O's
CC256x QFN EM User Guide
Measuring Current Consumption
These jumpers can also be used to measure the current consumption by placing current sense resistors on R10 for
VBAT_CC and R7 for VDD_1V8. Both these resistors are 0.10 Ohm, 1/4 W. VBAT_CC jumper can be used to to
measure the voltage/power consumed by the CC256x including RF TX/RX while VDD_IO jumper can be used to
measure voltage/power consumed by the digital I/O's.
Antenna/U.FL Selector
The board can be configured to route the RF output from the CC256x to the on board copper antenna or the on board
U.FL connector. This configuration is done by placing the resistor in either R29 or R30 position which has negligible
resistance of a 0 Ohm. R30 will connect the RF to the U.FL while R29 will connect to the copper antenna. The U.FL
connector is used for conducted testing of the RF. The Bluetooth Hardware Evaluation Tool (BHET)
[2]
to test basic RF functionality on this board.
RF Connectors
The RF1 and RF2 connectors can be used to mount on a wide variety of TI MCU platforms such as MSP430 and
Stellaris. Note that the RF I/O's are all at 3.3V levels. This enables seamless integration of the host using TI's
platforms that comes preinstalled with EM headers. The standard pinout is described in the following table:
4
can be used
RF1
Pin # EM Adapter Pin Assignment Pin # EM Adapter Pin Assignment
1 GND 2 N/C
3 MODULE_UART_CTS 4 N/C
5 SLOW_CLK 6 N/C
7 MODULE_UART_RX 8 N/C
9 MODULE_UART_TX 10 N/C
11 N/C 12 N/C
13 N/C 14 N/C
15 N/C 16 N/C
17 N/C 18 N/C
19 GND 20 N/C
RF2
Pin # EM Adapter Pin Assignment Pin # EM Adapter Pin Assignment
1 N/C 2 GND
3 N/C 4 N/C
5 N/C 6 N/C
7 +3.3V 8 MODULE_AUDIO_DATA_OUT
9 +3.3V 10 MODULE_AUDIO_DATA_IN
11 MODULE_AUDIO_FSYNC 12 N/C
13 N/C 14 N/C
15 N/C 16 N/C
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