TLV320ADC3101 / Can't write First-Order IIR value in Page 4 Registers correctly

S.Satoshi

Other Parts Discussed in Thread: TLV320ADC3101

Hi,

Our customer has evaluated TLV320ADC3101 and now they try to write First-Order IIR value in Page 4 Registers but they can't write it correctly. Please see following procedure they're trying and give your comment if it they need to modify it.

　SlvAddr=00h Data=04h Write : Set Page4
　SlvAddr=08h Data=3Fh Write : Set 3Fh to N0[15:0] in IIR
　SlvAddr=08h 　 Read : Read N0[15:0] but it return 00h

Best Regards,

Sonoki / Japan Disty

over 9 years ago

0 Luis Fernando Rodriguez S. over 9 years ago

TI__Guru* 84915 points

Hi, Sonoki-san,

Could you give more details about customer's register configuration? Section 10.6.4 Control Registers, Page 4: ADC Digital Filter Coefficients explains that default values are only valid 100 us following a hardware /software reset.

Additionally, it is suggested to write on the consecutive registers of the coefficient. I mean, customer must write on registers 8 and 9 to configure the coefficient N0.

Best regards,
Luis Fernando Rodríguez S.

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TLV320ADC3101 / Can't write First-Order IIR value in Page 4 Registers correctly