DS90UB914Q EVB resister check?

Chen Bogey8

Mastermind 9990 points

Dear Sir

Good days,

My customer can't link 913/914.

May we check if 914QEVB R1~R27 is nessary? due to my customer remove these device?

Best regards,

Bogey

over 11 years ago

0 Dac Tran over 11 years ago

TI__Expert 7395 points

Hi Bogey,

On the 914 EVM, R1~R27 are pulldowns and are not required for the chipset to function. Can you elaborate on “can’t link 913/914”?

Dac Tran

SVA APPS

0 Chen Bogey8 over 11 years ago in reply to Dac Tran

Mastermind 9990 points

Dear Sir

May we check if pcb impendence is not 100ohm. is it also will cause 913 and 914 can't link?

Best regards,

Bogey

0 Dac Tran over 11 years ago in reply to Chen Bogey8

TI__Expert 7395 points

Hi Bogey,

The 913/914 will still operate if the board impedance is not 100ohm (+/-10%) differential; however maximum frequency/datarate of chipset may not be achievable in some cases. What is the board impedance? Are you able to attain a LOCK state on the 914?

Dac Tran

SVA APPS

Interface

Interface forum

DS90UB914Q EVB resister check?