TLV320DAC3101: GPIO Pull-up/Pull-down

Satoshi Yone

Part Number: TLV320DAC3101

Hi, Team,

My customer is using TLV320DAC3101. We have questions for GPIO.

1. Does the internal circuit of the GPIO terminal (32 pin) be Pulled-up/Pulled-down?

2. If pull-up or pull-down is not used in the internal circuit, can they do pull-up or pull-down in the external circuit?

3. When using GPIO as H/L output, is it possible to change the registers as follows?
· L output ... Page.0 Register 51: 0x0C
· H output ... Page.0 Register 51: 0x0D

Best Regards,
Satoshi Yone

over 6 years ago

0 Luis Fernando Rodriguez S. over 6 years ago

TI__Guru* 84915 points

Yone-san,

The GPIO terminal is digital I/O terminal and it doesn't require to be pulled-up or pulled-down externally or internally. Actually, it may be left floated for cases where it is not in use.

For cases where it is configured as an Hi/Low output, you are right. Its output value can be configured by Page 0 / Register 51 = 0x0C for a low state output and Page 0 / Register 51 = 0x0D for a high state output.

Best regards,
Luis Fernando Rodríguez S.

0 Satoshi Yone over 6 years ago in reply to Luis Fernando Rodriguez S.

TI__Expert 3600 points

Hi, Fernando,

Thank you as always for your help!

Best Regards,
Satoshi Yone

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TLV320DAC3101: GPIO Pull-up/Pull-down