Power-Up Options
Broadcom
®
August 27, 2015 • 920737TAG04-HWUM101-RDS
Page 12
BCM920737TAG-04 WICED Smart Tag Hardware User Manual
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 correctly.
1. SW4
should be in the
VUSB
position and
SW5
should be in the
VREG
position.
2. SW6
should be in HCI mode by placing DIP switches
2 and 4
in the
ON
position.
3.
Press and hold the BOOT ROM button (
SW1
) and power up the device by plugging in the USB cable to
connector
J7
. The BOOT ROM button (
SW1
) can be released after the device is identified in the Windows
Device Manager.
or
Press and hold the BOOT ROM button (
SW1
), press and release RESET (
SW3
), release the BOOT ROM
button (
SW1
).
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. SW4
should be in the
VUSB
position and
SW5
should be in the
VREG
position.
2.
Set
SW8
DIP switches
1, 3, and 5
to the
ON
position (EEPROM).
All other
SW8 DIPs should be in the
OFF
position.
3.
Set
SW6
DIP switches
2 and 4
to the
ON
position and switches
1 and 3 OFF
position.
The Smart Tag is now ready to be run the application firmware stored in EEPROM or serial flash, depending on
the jumper configuration.
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