User`s guide

Avoiding Board Bring-Up Problems
i.MX53 System Development User’s Guide, Rev. 1
7-4 Freescale Semiconductor
Measure boot mode frequencies. Set
the boot mode switch for each boot
mode and measure the following,
(depending on system availability:
• NAND (probe CE to verify boot,
measure RE frequency)
• SPI-NOR (probe slave select and
measure clock frequency)
• MMC/SD (measure clock frequency)
This verifies the specified signals’ connectivity between the
i.MX53 and boot device and that the boot mode signals are
properly set.
Refer to section “Boot Modes for the i.MX53” for details about
configuring the various boot modes.
Run basic DDR initialization and test
memory.
1 Assuming the use of a JTAG debugger, run the DDR
initialization and open a debugger memory window
pointing to the DDR memory map starting address.
2 Try writing a few words and verify if they can be read
correctly.
3 If not, recheck the DDR initialization sequence and
whether the DDR has been correctly soldered onto the
board.
It is also recommended that users recheck the schematic to
ensure that the DDR memory has been connected to the
i.MX53 correctly.
Table 7-2. Board Bring-Up Checklist (continued)
Checklist Item Details Owner
Findings &
Status