LMK04808BEVAL: codes cannot be loaded

Shawn Ding

Part Number: LMK04808BEVAL

use CodeLoader interface to configure LMK04808B EVM board, and find bits cannot be loaded into the LMK04808B board, at the same time use the oscilloscope test USB2ANY HPA665 port data(signals and the clock) and just find the CLK signal is normal, and the data signal is a series of continuous pulse wave. Please help to analyse the reason, thanks a lot!

over 7 years ago

0 Puneet Sareen over 7 years ago

TI__Expert 8865 points

Hi Shawn

How are you programming the board? Are you connecting USB2Any with the adapter board with all the correct Jumper connections like shown in page 76&77 of the EVM user guide?
I would also recommend you to use TICSpro instead of Coadloader.

Best regards
Puneet

0 youjun zhong over 7 years ago in reply to Puneet Sareen

Prodigy 15 points

我试了好多次，也全部按指导手册上的资料操作加载bits到LMK04808B板子上了，但是始终没法加载进去，发现CPout1有时候是高电平，有时候是低电平，CPout2也类似，很多时候CLKOUT1~11是没有输出的，偶尔有些端口有输出，但是不是预想的时钟输出

0 Shawn Han over 7 years ago in reply to youjun zhong

TI__Genius 9920 points

Hi Shawn D.,
See Page 76 & 77 in www.ti.com/.../snau076b.pdf
There are 2 methods to connect PC to LMK04808 EVM.
Option 1, PC -- LPT-uWire cable -- LMK04808 EVM
Option 2, PC -- USB cable -- USB2ANY -- 10 pins uWire cable -- adapter (w/ jumps) -- one more uWire cable -- LMK04808 EVM
So I think you had adopted Option 2. DO NOT forget insert the adapter, otherwise USB2ANY can't control LMK04808EVM.

If you have no the adapter board, it is easier to make a LPT cable ( DB25 to 10 pin ) and adopt Option 1, according to definitions in "LPT Port Setup" map under Codeloader tap "Port setup". But you have to use a PC with LPT port.

Regards,
Shawn H.

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LMK04808BEVAL: codes cannot be loaded