Texas Instruments CC1111 User manual

CC1111/CC2511 USB HW
User’s Guide
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Table of Contents
1 Introduction......................................................................................................................................3
2 About this Manual............................................................................................................................3
3 Acronyms.........................................................................................................................................3
4 Definitions........................................................................................................................................4
5 Getting Started.................................................................................................................................5
6 Using SmartRF04EB as an In-Circuit Emulator (ICE).....................................................................7
6.1 The Debug Interface ...................................................................................................................7
7 USB Dongle Hardware Description.................................................................................................8
7.1 User Interface .............................................................................................................................9
7.2 USB Interface .............................................................................................................................9
7.3 Debug Connector........................................................................................................................9
7.4 General Purpose I/O Connectors ................................................................................................9
7.5 Cutaway Section.......................................................................................................................10
7.6 RF Performance of Antenna......................................................................................................10
8 USB Dongle Reference Design and Schematics ..........................................................................10
9 SOC_DEM schematics...................................................................................................................10
10 References..................................................................................................................................11
11 General Information ...................................................................................................................12
11.1 Document History..................................................................................................................12

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1 Introduction
Thank you for purchasing a development kit for Low Power RF System-on-Chips from Texas Instruments.
2 About this Manual
This manual covers the CC1111 USB Dongle or the CC2511 USB Dongle found in the CC1110-
CC1111DK/CC2510-CC2511DK development kits. Both these USB dongles are also available separately
as the CC1111EMK868-915 and CC2511EMK evaluation module kits.
The manual covers the CC1111/CC2511 USB Dongle hardware component of a USB development
framework. Please refer to [5] and [6] for a description of the accompanying software library and
application examples.
3 Acronyms
CDC Communications Device Class
DK Development Kit
EB Evaluation Board
EM Evaluation Module
HID Human Interface Device
IC Integrated Circuit
ICE In Circuit Emulator
KB Kilo Byte (1024 byte)
LED Light Emitting Diode
LPRF Low Power RF
MCU Micro Controller
NC Not connected
RF Radio Frequency
RX Receive
SoC System on Chip
TI Texas Instruments
TX Transmit
UART Universal Asynchronous Receive Transmit
USB Universal Serial Bus

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4 Definitions
SmartRF04EB CC1110EM/CC2510EM
Evaluation Board. Main board in the development
kits, USB interface, LCD, LEDs, pot-meter etc.
Development platform for the Evaluation Modules
(EM).
CC1110 and CC2510 Evaluation Module are small
modules for the CC1110 and CC2510 devices.
These can be plugged into the SmartRF04EB and
they should be used as the reference design for
antenna and RF layout.
CC1111/CC2511 USB Dongle System-on-Chip Debug Plug-in Board
A reference design for a CC1111/CC2511 based
full-speed USB dongle with RF interface. Should
be used as reference design for antenna and RF
layout.
The System-on-Chip Debug Plug-In Board. It
provides an additional physical
debug/programming interface for the
SmartRF04EB. Referred to as SOC_DEM in this
document.
Figure 1. Kit Hardware Component Overview
SoC System on Chip. A collective term used to refer to Texas
Instruments ICs with on-chip MCU and RF transceiver. Used
in this document to reference the CC1111/CC2511 and the
CC1110/CC2510.
ICE In Circuit Emulator. ICE functionality is built into the
SmartRF04EB.
USB Software Application Examples Application examples using the CC1111/CC2511 USB
Dongle together with a CC1110/CC2510EM.
USB Firmware Library A library of low level USB firmware which is used by all the
USB software examples.
Table 1. Key Definitions
See Figure 1 for an overview of the hardware components contained in the CC1110-CC1111DK/CC2510-
CC2511DK development kits. Table 1 explains some of the key definitions/abbreviations used in this
document.

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5 Getting Started
Make sure to install SmartRF Studio before connecting the SmartRF04EB to a PC. By installing it, the
required Windows drivers will be provided when connecting the SmartRF04EB.
The USB dongle is not delivered with pre-programmed firmware so an external ICE is needed for initial
programming of the device. The SmartRF04EB or the CC-Debugger can be used to program the USB
dongle. The CC1111/CC2511 has a 2 wire debug interface that is used for chip programming and
debugging. When connecting this interface to the SmartRF04EB, the CC1111/CC2511 can be
programmed from the SmartRF Flash Programmer software [4] and debugged from IAR Embedded
Workbench. To connect the CC1111/CC2511 USB Dongle to the SmartRF04EB, follow these 7 steps:
1. Turn off the SmartRF04EB power by moving the power switch shown in Figure 4 to the left
position.
2. Remove any evaluation modules (EMs) attached to the SmartRF04EB.
3. Connect the SmartRF04EB to a PC with the supplied USB cable.
4. Connect the System-on-Chip Debug Plug-In Board (SOC_DEM) to the EM connectors (P1 and
P2) on the SmartRF04EB.
5. Connect the USB Dongle to the SOC_DEM with the supplied 10 pin cable. The cable should be
mounted between the “Debug” connector on the dongle and the P3 connector on the SOC_DEM.
Make sure pin 1 on the dongle is connected to pin 1 on the SOC_DEM (truncated corner). This
cable connects the debug interface and GND between the two devices; however the USB Dongle
is not powered through this cable.
6. Power the CC1111/CC2511 USB Dongle. To power the dongle there are two options:
Powered with a USB Cable
Use the supplied USB extension cable to connect the USB Dongle to the PC (see Figure
2).
Powered from the SmartRF04EB
Connect pin 9 on the “Test pin” connector on USB Dongle to pin 3 (labelled “3.3 V”) on the
“I/O B” connector on SmartRF04EB to power the dongle from the EB (see Figure 3).
The CC1111/CC2511 USB Dongle should only be powered by one of the two sources at a time.
Do not connect the USB cable to the USB Dongle while it is powered from the SmartRF04EB. The
SOC_DEM has a voltage level converter on the P3 connector, so the SmartRF04EB and the USB
Dongle may have a different power supply voltage.
7. Turn on the power on the SmartRF04EB (see Figure 4).
SmartRF Studio
[2]
is a PC application for Windows that helps you find and adjust the radio register
settings. Please see [2] for instructions on downloading and installing SmartRF Studio.

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Figure 2. USB Dongle Powered from USB Cable
Figure 3. USB Dongle Powered from SmartRF04EB
Figure 4. SmartRF04EB Power Switch, Power On
The CC1111/CC2511 can now be programmed with the SmartRF Flash Programmer software. The
firmware on the CC1111/CC2511 can also be debugged using the IAR Embedded Workbench debugger.
Please see the SmartRF Flash Programmer [2] user manual for more details.
Please see the “CC1110DK/CC2510DK Development Kit User Manual” [1] for more information on the
SmartRF04EB and how to use the CC1110/CC2510EMs.

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6 Using SmartRF04EB as an In-Circuit Emulator (ICE)
The debug interface on the SmartRF04EB is controlled by the USB MCU. This allows both programming
and an emulator interface over USB, which makes the SmartRF04EB usable as an In-Circuit Emulator
(ICE) for the CC1111/CC2511.
To use the SmartRF04EB as ICE, the IAR Embedded Workbench software for 8051 architecture
(EW8051) must be installed. The Embedded Workbench is an integrated development environment with a
complete tool-chain such as C Compiler, Simulator, and ICE debugger. Please see [1] for instructions on
how to set up the ICE debugger for use as an ICE.
When the SmartRF04EB with a SoC is connected to a PC with the USB port, the debugger in IAR
EW8051 will connect to it when started. If several SmartRF04EBs are connected to USB ports
simultaneously, a selection window will display the connected evaluation boards, and the user can select
which device to load.
6.1 The Debug Interface
For custom PCB’s with e.g. the CC2511 SoC, it is recommended to include a pin header or test points to
allow in-circuit emulation or programming using a SmartRF04EB or other 3rd party programming tools.
The USB Dongle can be used as a reference. Please see the CC1110/CC2510/CC1111/CC2511 section
of the TI web site for an updated list of 3rd party programming tools.
VDD note: The SmartRF04EB includes a voltage converter to support programming and debugging of
external systems with different voltage than the SmartRF04EB. The debug connector includes two VDD
connections on pin 2 and pin 9. The function is different for these connections.
Pin 2 VDD supplies voltage from the external target to the voltage converter. If the target application is self
powered pin 2 should be connected to VDD to assure that the correct supply voltage is used for the
voltage converter. This pin must always be connected to VDD.
Pin 9 VDD supplies VDD (3.3 V) from the SmartRF04EB. If the target application is powered from the
SmartRF04EB supply during programming and debugging this pin can be connected to VDD. If the target
voltage differs from 3.3V, this pin should not be connected.
On the USB Dongle this pin is not connected. Hence the USB Dongle must be powered from either a
separate USB cable or a separate cable connecting pin 9 on P4 / “test pins” on the dongle to VDD on the
SmartRF04EB. When using SmartRF04EB as emulator for external target debugging any evaluation
module (EM) must be removed.
Figure 5 shows the required signal for a minimum connector layout on external target.
Figure 5. Minimum Debug Connector Pinout (top view)

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7 USB Dongle Hardware Description
Figure 6. CC2511 USB Dongle, (top view)
Figure 7. CC2511 USB Dongle, (back view)
Figure 8. CC1111 USB Dongle, (top view)
Figure 9. CC1111 USB Dongle, (back view)
LED
CC2511F32
Debug
connector
GPIO test
pins
Alternative
debug
connector
USB
connector
Button
PCB
antenna
Line marking
cutaway section
of the dongle
LED
CC1111F32
Debug
connector GPIO test
pins
Alternative
debug
connector
USB
connector
Button
Chip antenna
with PCB track
Line marking
cutaway section
of the dongle

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7.1 User Interface
The CC1111/CC2511 USB Dongle has one button and one LED that can be used to interact with the user.
The LED is connected to pin P1_1. Setting P1_1 high (to logic 1) will turn the LED on. The button is
connected to pin P1_2 and GND. The pin P1_2 must be configured as an input with pull-up for the button
to operate as intended. When the button is pushed, P1_2 is pulled low (to logic 0).
7.2 USB Interface
The USB Dongle has a standard USB connector. The dongle is powered through this connector. On the
D+ line there is a pull-up used to identify the dongle as a full-speed USB device on the USB bus. The pull-
up can be controlled from the firmware, using P1_0. This enables the dongle to be connected to the USB
bus without signalling its presence to the USB hub.
7.3 Debug Connector
The USB Dongle has debug connector (P3) that is compatible with the SoC debug connector on the
SmartRF04EB (P14) and on the System-on-Chip Debug Plug-In board (SOC_DEM) (P3). This enables
the USB Dongle to be programmed and debugged via the SmartRF04EB. The pin-out of the debug
connector (P3) is given in Table 2.
Pin Function
1 GND
2 VDD
3 P2_2 / debug clock
4 P2_1 / debug data
5 P1_4
6 P1_5
7 RESET_N
8 P1_6
9 Not connected (VDD by mounting R6, 0 Ohm)
10 P1_7
Table 2. Debug Connector (P3) Pin-Out
7.4 General Purpose I/O Connectors
All GPIO pins on the CC1111/CC2511 SoC that are not used on the USB Dongle are routed to the P4
“Test pins” pin-row. They can be used for debugging or to connect external devices to the
CC1111/CC2511. The pin-out is given in Table 3.
Pin Function
1 P2_0
2 GND
3 P0_5
4 P0_4
5 P0_3
6 P0_2
7 P0_1
8 P0_0
9 VDD
10 P1_3
Table 3. Test Pins (P4) Pin-Out

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7.5 Cutaway Section
On the USB Dongle the debug connector and the GPIO test-pin connector is mounted on a section of the
dongle that may be removed to minimize the dongles size. This cutaway section is marked with a white
line, see Figure 8. If this section is removed from the dongle, the CC1111/CC2511 can still be
programmed and debugged using the alternative debug connector found on the back of the USB Dongle,
see Figure 7.
7.6 RF Performance of Antenna
While the CC2511 USB Dongle has a PCB antenna designed as a meandered inverted F antenna, the
CC1111 USB Dongle has a chip antenna with a PCB track added for tuning of the resonant frequency.
The performance of the PCB antenna on the USB Dongle will be affected by its nearby surroundings.
Therefore, when plugged into different computers or a USB extension cable differences in the RF
performance must be expected. Also, if the USB Dongle is put inside a casing, the material and design of
the enclosure will influence the antenna’s performance. For the CC2511 USB Dongle the maximum
antenna gain measured is 5.3 dBi. This means that duty cycling or reduction of output power might be
needed to ensure compliance with regulatory limits. Please see [7] for more information about SRD
regulations in the 2.4 GHz ISM band. The performance of the antenna of the CC2511 USB Dongle is
further described in [8].
8 USB Dongle Reference Design and Schematics
Please see [9] and [10] for the schematics of the CC1111/CC2511 USB Dongle. Both schematics and
layout files are available as a part of the reference designs.
9 SOC_DEM schematics
Figure 10. SOC_DEM schematics