DLPC200 and DLP5500 of Interface(LVDS)

M.H

Genius 5960 points

Other Parts Discussed in Thread: DLP5500, DLPC200

Hi,

My customer is using the DLPC200 and DLP5500.

My customer uses a LVDS(200MHz) of the interface of DLPC200 and DLP5500.

However, EMI due to LVDS has come out strongly.

※ PCB layout complies with the DLP5500 data sheet (DLPS014E).

【Question】

1. Do setting is possible to drop the LVDS drive capacity at DLPC200?

2. Is there an effective way as EMI countermeasure?

Best Regards,

hamada

over 10 years ago

0 Sanjeev over 10 years ago

TI__Mastermind 30875 points

Hello Hamada-san,

#1. Do you mean, is there a way to operate bus at lower frequency? < 200MHz?
[Sanjeev] I am afraid it is not possible, the controller hardware and firmware setup to operate the bus at this bus speed only.

#2. There is no controller side or other adjustment to countermeasure the EMI effects.

Regards,
Sanjeev

0 M.H over 10 years ago in reply to Sanjeev

Genius 5960 points

Hi,

Thank you for reply.

>#1. Do you mean, is there a way to operate bus at lower frequency? < 200MHz?
>[Sanjeev] I am afraid it is not possible, the controller hardware and firmware setup to operate the bus at this bus speed only.

Frequency will be operated at 200MHz.
Drive capability (differential: ± 400mv) Is there a way to drop ?

Best Regards

hamada

0 Sanjeev over 10 years ago in reply to M.H

TI__Mastermind 30875 points

Thanks for clarification, we are checking the same. By the way are you pointing to the same in http://www.ti.com/lit/ds/symlink/dlpc200.pdf

0 Sanjeev over 10 years ago in reply to Sanjeev

TI__Mastermind 30875 points

Hello Hamada-san,

Unfortunately it is not possible. You have to be within the specification.

Regards,
Sanjeev

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DLPC200 and DLP5500 of Interface(LVDS)