TMDSLCDK138: Distortion of a Square Wave During a Pass-Through (OMAP L-138 LCDK)

Sergei Paleichuk

Part Number: TMDSLCDK138
Other Parts Discussed in Thread: OMAP-L138, OMAPL138

Square Wave is getting severely distorted during a simple pass-through as shown in the screenshots attached (shown are distortions for 1, 10, and 1,000 Hz).

Bandwidth of interest:	0–1,000 Hz
Firmware used:	OMAP-L138 StarterWare 1.10.04.01
Project used:	mcasp_c674x_omapl138_lcdkOMAPL138

Square Wave Passthrough - 1 kHz

Square Wave Passthrough - 10 Hz

Square Wave Passthrough - 200 Hz

over 2 years ago

0 Jianzhong Xu over 2 years ago

TI__Mastermind 40225 points

Hello,

Sorry that we do not support the OMAP-L138 StarterWare anymore, as announced here. Please take a look at the announcement and find consolidated development resources there.

Regards,

Jianzhong

0 Sergei Paleichuk over 2 years ago in reply to Jianzhong Xu

Prodigy 10 points

Very sorry but current design is based around Starterware, not SDK, and changing the OS will result in a major overhaul of a system. Please, also note that I I have tried to unsuccessfully resolve this issue for several years only to get a run-around from TI, so your answer WILL NOT RESOLVE my issue.

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TMDSLCDK138: Distortion of a Square Wave During a Pass-Through (OMAP L-138 LCDK)