Boot From Rom; Application Firmware Software Boot-Up - Broadcom BCM920737TAG-03 User Manual

BCM920737TAG-03 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. SW2 and SW3 should be placed in position 1-2.
2. SW4 should be in HCI mode by placing all eight switches in the ON position.
3. Press and hold the BOOTt 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 after the device is identified in the Windows
Device Manager.
Or
Press and hold the BOOT ROM button (SW5), press and release RESET (SW6), release the BOOT ROM
button (SW5).
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. SW2 and SW3 should be placed in positions 1-2.
2. SW4 should be in App mode by placing all eight 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.
®
Broadcom
March 28, 2014 • MMP920737TAG03-HWUM100-R
Power-Up Options
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