User's Manual

SysOnChip
SOC LBS LOOK’ET User Manual
12
1.4 LOOK’ET basic operation scheme
LOOK’ET has several stages to debug status and operate in test mode.
User does not have to control this, but it is good to know to when the debugging command is valid.
1) Boot stage
After power on, Boot stage takes 25 seconds to check the flash memory status and user program updating request.
If the user want to upgrade LOOK’ET with the new binary file, it can be done in this time.
2) Application stage
After boot stage, application code will be executed. Application code waits 5 seconds to select the test mode before
initialization. If the user does not enter test mode value within 5 seconds, LOOK’ET proceeds the normal operation
mode. This test mode is just for the hardware testing so user does not have to enter this. After this, LOOK’ET does
initialization and waits in idle mode.
Consequently, user must waits the least 35 seconds after power on.