AM6548: OLDI output state at software reset

Daisuke Maeda

Guru 20205 points

Part Number: AM6548

Are all the OLDI differential outputs in a high impedance state during the software reset (OLDITX0_SW_RST) asserted by DSS0_VP_DSS_OLDI_CFG[12] SOFTRST register bit?

Our customer wants all the OLDI differential outputs to be in a high impedance state at any time by the software.

If that doesn't work, could you tell me another way to do it?

Best regards,

Daisuke

over 4 years ago

0 Daisuke Maeda over 4 years ago

Guru 20205 points

Dear TI support team,

Could you answer the questions in my post?

Please give me an answer as soon as possible. Your prompt reply would be appreciated.

Best regards,

Daisuke

0 Colin Callaghan over 4 years ago in reply to Daisuke Maeda

TI__Expert 8275 points

Daisuke,

The DataManual, shows in Table 4-1, column 'Ball Reset State' for all OLDI pins is 'OFF'.

At the bottom of the table it is clarified that '6. BALL RESET STATE...OFF: High Impedance'.

This should confirm what the customer what hoping to find.

Data Manual from ti.com for AM65:

Regards,

Colin

0 Daisuke Maeda over 4 years ago in reply to Colin Callaghan

Guru 20205 points

Hi Colin-san,

Thank you for your reply.

I understand that all the OLDI differential outputs are in a high impedance state at the software reset as well as at power-on reset.

Best regards,

Daisuke

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AM6548: OLDI output state at software reset