Step 5
Memory booting
Step 6
Peripheral booting
Step 2
Fast external booting
ROM code
Step 1
Start-up and configuration
No more
booting
devices?
Copy image from permanent
non-XIP booting devices
Download image from peripheral
booting devices.
“dead loop”
wait for WD reset
Copy and execute
configuration header
Permanent
booting
device?
Step 4
Take first/next device from the list
Yes
No
Yes
No
Configuration
header
present?
Yes
No
Copying or
download
successful?
No
Yes
Step 3
Booting device list set-up
Step 7
Image execution
Jump to code on CS0
Process next booting device
Process first
booting device
init-007
Public Version
www.ti.com
Device Initialization by ROM Code
26.4.3 Overall Booting Sequence
is the ROM code flow chart.
Figure 26-8. Overall Booting Sequence
3527
SWPU177N – December 2009 – Revised November 2010
Initialization
Copyright © 2009–2010, Texas Instruments Incorporated