DS90UB948-Q1: how to reset input mode(coax to stp)

user6064774

Hi:

Sometimes 948 will be setted to coax mode because timming problem of my circuit. The screen blurred. How to reset it to STP mode online? I set 0x23 bit 3 =0 and register 0x01=0x01 but screen blurred yet. I can not control PDB in the circuit. So is there any good ways to give screen ok ? Thanks.

over 5 years ago

0 user6064774 over 5 years ago

Prodigy 170 points

sorry，I try again and confirm the problem is caused by wrong settings of MAP_SEL mode. It is not caused by Coax mode. So is there any ways to change MAP_SEL by set register? Thanks.

0 Hamzeh Jaradat over 5 years ago

TI__Guru** 116930 points

Hello,

Normally chosing Coax or STP should be selected by hardware setting of the MODE_SEL1 pin. If this Pin is set wrongly, you can override it as you said, using reg 0x23 bit3.

If your screen is blurred even after changing this register settings, that means you have a different problem! May be your MAP_SEL is also set wrong!

0 user6283341 over 5 years ago in reply to Hamzeh Jaradat

Prodigy 30 points

Thanks。

Yes, I confirm that the MAP_SEL is wrong. But I do not know how to change it to 0 without modifying the hardware. Can you tell me how to modify it by set register ？

0 Hamzeh Jaradat over 5 years ago in reply to user6283341

TI__Guru** 116930 points

Hello,

you can override MAP_SEL using reg 0x49[6:5]

0 user6064774 over 5 years ago in reply to Hamzeh Jaradat

Prodigy 170 points

It is ok now when I set 0x49. Thank you very much

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DS90UB948-Q1: how to reset input mode(coax to stp)