Broadcom BCM920732TAG00 User manual

WICED™Development System
5300 California Avenue • Irvine, California, 92677 • Phone: [phone] • Fax: [phone]
920732TAG00-HWUM100-R
WICED Smart Tag Hardware User Guide
BCM920732TAG00
August 30 2013

WICED Smart TAG Hardware User Guide Table of Contents
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 1
Revision History
Broadcom Corporation
5300 California Avenue
Irvine, CA 92617
© 2013 by Broadcom Corporation
All rights reserved
Printed in the U.S.A.
Revision
Date
Change Description
920732TAG00-HWUM100-R
August 30, 2013
Initial release

WICED Smart TAG Hardware User Guide Table of Contents
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 2
Table of Contents
About This Document ..................................................................................................................... 3
Purpose and Scope...................................................................................................................... 3
Audience ..................................................................................................................................... 3
Acronyms and Abbreviations...................................................................................................... 3
Document Conventions .............................................................................................................. 3
References .................................................................................................................................. 4
Technical Support ....................................................................................................................... 4
Product Description ........................................................................................................................ 5
Board Layout................................................................................................................................... 6
Power-Up Options........................................................................................................................... 8
UART Boot-Up ............................................................................................................................. 8
Boot from ROM........................................................................................................................... 9
Application Firmware Software Boot-Up.................................................................................... 9
Hardware Settings......................................................................................................................... 10
Configurable Resistor Descriptions........................................................................................... 10
Connector/Switch Descriptions ................................................................................................ 11
Schematics .................................................................................................................................... 12

WICED Smart Tag Hardware User Guide About This Document
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 3
About This Document
Purpose and Scope
The Broadcom Wireless Internet Connectivity for Embedded Devices (WICED; pronounced “wick-ed”)
Smart™ SDK is shipped with BCM920732TAG-00 evaluation board. This document provides board layout,
schematics and instructions on how to use this board.
Audience
This document is for software developers who are using the WICED Smart Development System to
create applications for Broadcom Bluetooth Smart devices.
Acronyms and Abbreviations
In most cases, acronyms and abbreviations are defined on first use. For a comprehensive list of
acronyms and other terms used in Broadcom documents, go to:
http://www.broadcom.com/press/glossary.php
Document Conventions
The following conventions may be used in this document:
Convention
Description
Bold
Buttons, tabs, lists and other GUI items: click Next, select the Startup tab
Monospace
Command lines and application outputs:
RAM.hello_sensor-BCM920732TAG_Q32 download
< >
Placeholders for required elements: <WICED-Smart-SDK>
‘’
Application Names, Configuration Parameters: ‘heart_rate_monitor’

WICED Smart Tag Hardware User Guide About This Document
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 4
References
The references in this section may be used with this document.
Note : Broadcom provides customer access to technical documentation and software through
the WICED website (http://broadcom.com/wiced). Additional restricted material may be
provided through the Customer Support Portal (CSP) and Downloads.
For Broadcom documents, replace the “xx”in the document number with the largest number available
to ensure you have the most current version of this document.
Document (or Item) Name
Number
Source
[1] WICED Smart™Quick Start Guide
WICED-Smart-QSG1xx-R
WICED website
Technical Support
Broadcom provides customer access to a wide range of information, including technical documentation,
schematic diagrams, product bill of materials, PCB layout information, and software updates through its
customer support portal. For a CSP account, contact your Broadcom Sales or Engineering support
representative.
General WICED support is available on the Broadcom forum at the URL shown below. Sign-up is a two-
step process: First, sign up to the general Broadcom support forum, then apply to be a member of the
WICED User Group. Be sure to identify yourself to the forum moderator, access to the WICED forum is
restricted to bona-fide WICED customers only.
http://forum.broadcom.com/forum.php

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 5
Product Description
The BCM20732 is a Bluetooth Low Energy (BLE)-compliant, stand-alone baseband processor with an
integrated 2.4 GHz transceiver. The Broadcom WICED Smart Tag (Figure 1) is an evaluation board that
makes various pins on the BCM20732 available for debug, evaluation, and troubleshooting.
Figure 1: WICED Smart Tag

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 6
Board Layout
The Smart Tag evaluation board assembly top view is shown in Figure 2.
Figure 2: Board Assembly (Top View)
Note: The resistors for memory selection are highlighted in red on the figure above.

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 7
By default, the board is set to use EEPROM but can be set for serial flash by adjusting the resistors
highlighted in Figure 2 to the desired setting shown in Table 1.
Table 1: Resistor Settings for Memory
Resistor
Serial Flash
EEPROM
RD2
B-C
A-C
RD3
B-C
A-C
RD4
B-C
A-C
R100
Install
DNI
R101
Install
DNI
The Smart Tag evaluation board assembly bottom view is shown in Figure 3.
Figure 3: Board Assembly (Bottom View)

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 8
Power-Up Options
VDDIO can be sourced from three options:
• Coin cell unregulated
• Coin cell regulated
• USB regulated
These options are set using SW2 and SW3(see Figure 2) as listed in Table 2. Default regulator output is
1.8V.
Table 2: Switch Settings for Power
Switch
Coin Cell Unregulated
Coin Cell Regulated
USB Regulated
SW2
1-2 (VUSB)
2-3 (VCOIN)
1-2 (VUSB)
SW3
2-3 (VCOIN)
1-2 (VREG)
1-2 (VREG)
To adjust the regulator output, feedback components can be adjusted as shown in Table 3.
Table 3: Voltage Regulator Output
VOUT
Component Values
3.3V
RFB1=470 kΩ, RFB2=150 kΩ, C22=100 pF
3.0V
RFB1=330 kΩ, RFB2=120 kΩ, C22=150 pF
1.8V
RFB1=300 kΩ, RFB2=240 kΩ, C22=150 pF
UART Boot-Up
The following procedure describes how to power up the tag board with the UART interface enabled.
1. SW2 and SW3should be placed in any desired power configuration shown in Table 2.
2. SW4 should be in HCI mode by placing all four switches in the ON position.
3. Plug in the USB cable to connector J6. The Smart Tag should display in the Device Manager as a
COM port named USB Serial Port.
Note: If the device driver does not load correctly, the FT232RL driver must be downloaded
from the FTDI website (see http://www.ftdichip.com/Drivers/VCP.htm).
The evaluation board can now accept HCI commands or download firmware through the UART interface.

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 9
Boot from ROM
The following procedure describes how to boot the Smart Tag board from ROM. This is available if the
NVRAM is corrupted and the device is unable to boot up correctly.
1. SW2 and SW3 should be placed in position 1-2.
2. SW4 should be in HCI mode by placing all four switches in the ON position.
3. Press and hold the Boot ROM button (SW5) and power up the device by plugging in the USB cable
to connector J6. The Boot ROM button (SW5) can be released once the device is identified in the
Device Manager.
The evaluation board can now accept HCI commands or download firmware through the UART interface.
Application Firmware Software Boot-Up
The procedure below describes how to power up the Smart Tag board to run application firmware.
1. SW2and SW3 should be placed in positions 1-2.
2. SW4 should be in App mode by placing all four switches in the OFF position.
The Smart Tag is now ready to be run application firmware stored in EEPROM or serial flash, depending
on the jumper configuration.
Note: Step 2 is optional. When firmware starts up it tries to detect presence of the UART. If
there is no connection firmware will proceed with loading patches from memory even if HCI
mode is configured.

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 10
Hardware Settings
Configurable Resistor Descriptions
Hardware configuration for the Smart Tag board is defined in Table 4.
Table 4: Configurable Resistor Descriptions
Resistor
Configuration
Description
RD1
A-C
Connects LDO_IN to VBAT
B-C
Connects LDO_IN to VDDIO
RD2
A-C
Connects SDA for EEPROM
B-C
Connects SI for serial flash
RD3
A-C
Connects SCL for EEPROM
B-C
Connects SCK for serial flash
RD4
A-C
Connects VDDIO to EEPROM VCC
B-C
Connects VDDIO to serial flash VDD

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 11
Connector/Switch Descriptions
Connector/switch descriptions are defined in Table 5.
Table 5: Connector/Switch Descriptions
Connector/Switch
Description
SW1
GPIO0 button
SW2
Regulator input from coin cell/USB switch
SW3
VDDIO from coin cell/regulator output switch
SW4
Application mode/HCI_UART mode switch
SW5
EEPROM/SF bypass button
SW6
Hardware reset button
JP1
6-wire UART header
J6
USB connector

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 12
Schematics
Figure 4: Baseband and PMU Schematics

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 13
Figure 5: RF Schematics

WICED Smart Tag Hardware User Guide Product Description
BROADCOM® WICED Smart SDK
August 30, 2013 920732TAG00-HWUM100-R Page 14
Figure 6: I/O and Interface Schematics

WICED Smart Tag Hardware User Guide Product Description
Broadcom® Corporation reserves the right to make changes without further notice to any products or
data herein to improve reliability, function, or design. Information furnished by Broadcom Corporation
is believed to be accurate and reliable. However, Broadcom Corporation does not assume any liability
arising out of the application or use of this information, nor the application or use of any product or
circuit described herein, neither does it convey any license under its patent rights nor the rights of
others.
BROADCOM CORPORATION
5300 California Avenue
Irvine, California, 92677
© 2013 by BROADCOM CORPORATION. All rights reserved.
920732TAG00-HWUM100-R August 30, 2013
Phone : [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com