Broadcom WICED BCM920737TAG-04 User manual

920737TAG04-HWUM101-RDS
5300 California Avenue • Irvine, CA 92617 • Phone: [phone] • Fax: [phone] August 27, 2015
WICED Smart Tag Hardware User Manual
BCM920737TAG-04
WICED™ Development System
Broadcom Confidential

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Revision History
Revision Date Change Description
920737TAG04-HWUM101-R 08/27/15 Updated:
•“Board Layout” on page 9
•“Configurable Resistor Descriptions” on page 13
920737TAG04-HWUM100-R 06/23/15 Initial release
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List of FiguresBCM920737TAG-04 WICED Smart Tag Hardware
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 3
List of Figures
Figure 1: WICED Smart Tag4 Key Components ............................................................................................... 8
Figure 2: Board Assembly (Top View) ............................................................................................................... 9
Figure 3: Board Assembly (Bottom View) ........................................................................................................ 10
Figure 4: Baseband and PMU Schematics ...................................................................................................... 15
Figure 5: RF Schematics ................................................................................................................................. 16
Figure 6: GPIO, Headers, and Power Schematics .......................................................................................... 17
Figure 7: Switches and Sensors ...................................................................................................................... 18
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Table of ContentsBCM920737TAG-04 WICED Smart Tag Hardware User
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 4
Table of Contents
About This Document .................................................................................................................................. 6
Acronyms and Abbreviations................................................................................................................... 6
Document Conventions ........................................................................................................................... 6
References.............................................................................................................................................. 7
Technical Support ........................................................................................................................................ 7
Product Description ..................................................................................................................................... 8
Board Layout ................................................................................................................................................ 9
Power-Up Options ...................................................................................................................................... 11
UART Boot-Up ...................................................................................................................................... 11
Boot from ROM ..................................................................................................................................... 12
Application Firmware Software Boot-Up ............................................................................................... 12
Hardware Settings ...................................................................................................................................... 13
Configurable Resistor Descriptions ....................................................................................................... 13
Connector/Switch Descriptions ............................................................................................................. 14
Schematics.................................................................................................................................................. 15
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List of TablesBCM920737TAG-04 WICED Smart Tag Hardware
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 5
List of Tables
Table 1: Resistor Settings for External 32 KHz Crystal ..................................................................................... 9
Table 2: SW8 DIP Settings (Memory Type)....................................................................................................... 9
Table 3: Switch Settings for Power .................................................................................................................. 11
Table 4: Voltage Regulator Output .................................................................................................................. 11
Table 5: Configurable Resistor Descriptions.................................................................................................... 13
Table 6: Connector/Switch Descriptions .......................................................................................................... 14
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About This Document
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 6
BCM920737TAG-04 WICED Smart Tag Hardware
About This Document
The Broadcom Wireless Internet Connectivity for Embedded Devices (WICED; pronounced "wicked") Smart™
SDK is shipped with the BCM920737TAG-04 evaluation board. This document provides board layout,
schematics, and instructions on how to use this board.
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 User input and actions: for example, type exit, click OK, press Alt+C
Monospace Code: #include <iostream>
HTML: <td rowspan = 3>
Command line commands and parameters: wl [-l] <command>
< > Placeholders for required elements: enter your <username> or wl <command>
[ ] Indicates optional command-line parameters: wl [-l]
Indicates bit and byte ranges (inclusive): [0:3] or [7:0]
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Technical Support
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 7
BCM920737TAG-04 WICED Smart Tag Hardware
References
The references in this section may be used in conjunction with this document.
For Broadcom documents, replace the “xx” in the document number with the largest number available in the
repository to ensure that you have the most current version of the document.
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 to registered users in the Broadcom Support Community forum:
http://community.broadcom.com/welcome
Note: Broadcom provides customer access to technical documentation and software through its
Customer Support Portal (CSP) and Downloads and Support site (see Technical Support).
Document (or Item) Name Number Source
Broadcom Items
[1] WICED Smart™ Quick Start Guide WICED-Smart-QSG2xx-R WICED Website
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Product Description
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 8
BCM920737TAG-04 WICED Smart Tag Hardware User Manual
Product Description
The BCM27036 and BCM20737 are Bluetooth Low Energy (BLE)-compliant, stand-alone baseband processors
with integrated 2.4 GHz transceivers. The Broadcom WICED Smart Tag4 (Figure 1) is an evaluation board that
makes various pins on the BCM2073X available for debug, evaluation, and troubleshooting.
Figure 1: WICED Smart Tag4 Key Components
Reset
(SW3)
SW6
SW8
App.
(SW2)
Boot
(SW1)
R29
Accelerometer
and
Gyroscope Combo
Humidity
and
Temperature
Magnetometer
Pressure
Sensor
SW4 SW5
RD6
RD5
1 VCOIN
2VDDIO
3VREG
1 VUSB
2VREGIN
3VCOIN
J12
SW9
1 1
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Board Layout
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 9
BCM920737TAG-04 WICED Smart Tag Hardware User Manual
Board Layout
The Smart Tag evaluation board assembly top view is shown in Figure 2. The resistors for memory selection are
highlighted in red.
Figure 2: Board Assembly (Top View)
By default, the board is set to use the internal LPO for sleep, but it can be set to use external LPO by installing
R102 and R103, highlighted in Figure 2, above. Resistor values are listed in Ta b l e 1 , below.
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 Ta b le 2).
Table 1: Resistor Settings for External 32 KHz Crystal
Resistor Internal LPO External LPO
R26 DNI 0 Ohm
R27 DNI 0 Ohm
Table 2: SW8 DIP Settings (Memory Type)
Memory Type ON OFF
EEPROM 1, 3, and 5 2, 4, 6, 7, and 8
SFLASHa
a. For the SFLASH to be active R39 must be removed to disable the I2C bus. This is in addition to the switch
settings.
2, 4, 6, 7, and 8 1, 3, and 5
Broadcom Confidential

Board Layout
Broadcom®
August 27, 2015 • 920737TAG04-HWUM101-RDS Page 10
BCM920737TAG-04 WICED Smart Tag Hardware User Manual
The Smart Tag evaluation board assembly bottom view is shown in Figure 3.
Figure 3: Board Assembly (Bottom View)
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