DS90UB925Q-Q1: Can ub928, ub924, ub940, ub948 be paired with ub303

Wei Xiao

Part Number: DS90UB925Q-Q1
Other Parts Discussed in Thread: DS90UR241

We need to deserialize signal from ub303. Can ub928, ub924, ub940, ub948 be used in this case? If yes, need to set certain compatibility mode?

4 months ago

0 Casey McCrea 4 months ago

TI__Guru* 88220 points

Hello Wei,

Yes this is possible, but the allowable PCLK range must be constrained to fit the limits of both devices in the SER/DES pair. There is no special mode needed

Best Regards,

Casey

0 Wei Xiao 4 months ago in reply to Casey McCrea

Prodigy 240 points

All of the four deserializers mentioned are compatible? We have no control over the ub303 PCLK. What should we do to constrain the PCLK of the deserializers? Thank you.

+1 Casey McCrea 4 months ago in reply to Wei Xiao

TI__Guru* 88220 points

Wei,

Yes, all 4 are compatible. The PCLK comes from the source that is attached to the UB303. So as long as UB303 is operated within datasheet limits, then all 4 of these DES can be supported since the UB303 has a more narrow PCLK range than any of these DES.

Best Regards,

Casey

0 Wei Xiao 4 months ago in reply to Casey McCrea

Prodigy 240 points

Hi Casey,

Are any of the four deserializers compatible with ds90ur241 in backward compatibility mode?

Thank you.

0 Logan Cummins 4 months ago in reply to Wei Xiao

TI__Mastermind 44395 points

Hi Wei,

DS90UR241 is FPD-Link II device, whereas the others are FPD-Link III. These are not compatible.

Regards,

Logan

0 Wei Xiao 4 months ago in reply to Logan Cummins

Prodigy 240 points

DS90UR905 and DS90UR907 are FPD-LINK II devices, but they are said to be compatible with UB924 and UB928 in their data sheets. DS90UR906 is also compatible with DS90UR241 according to the data sheet. However, DS90UR241‘s compatibility with FPD-LINK III devices are never mentioned in data sheets, although some say they are compatible.

0 Casey McCrea 4 months ago in reply to Wei Xiao

TI__Guru* 88220 points

Wei,

DS90UR241 is not compatible to FPD III devices. It is an older generation 18 bit color serializer from the FPD II generation. 906 is a newer FPD II generation which supports 24 bit color but also had a backwards compatible mode to UR241. But 92x and 94x don't have compatibility all the way back to UR241.

Best Regards,

Casey

0 Wei Xiao 4 months ago in reply to Casey McCrea

Prodigy 240 points

Is there a device that is compatible with ur241, ur905 and ur925 all three? Thanks

0 Casey McCrea 4 months ago in reply to Wei Xiao

TI__Guru* 88220 points

Hello Wei,

No, there is no single device with this compatibility

Best Regards,

Casey

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DS90UB925Q-Q1: Can ub928, ub924, ub940, ub948 be paired with ub303