DS80PCI402 / about SMBus transactions

Hi Kato San,

We will check and respond later.

Regards,

TK Chin

Hi Kato-san,

Yes, the block write/read is supported on the DS80PCI402. Customer should first burst read all the registers and only modify write to the address registers that are known. They should not change the registers that are not shown in the datasheet because these are "reserved" for internal use.

Regards, Michael

Michael - san,

Thank you for the replay.

I understand DS80PCI402 has block write/read mode.

How do we change 1B access mode to block write/read mode?

Best Regards,

Kato

Michael - san,

We would like to set SMBus Block-Write Block-Read Process Call.

In case of LM93, the sequence of events is described in the data sheet.

However,the data sheet of DS80PCI402 isn't described about setting method.

Could you please tell us the information?

Best Regards,

Kato

Michael - san,

I haven't got your answer yet.

We would like to set SMBus Block-Write Block-Read Process Call.

Could you please tell us the information?

Best Regards,

kato

Hi Kato-san,

Please refer to the SMBus 2.0 specification, section 5.5.7 for the detail information. www.smbus.org/specs/smbus20.pdf

The block write/read is writing or reading consecutive bytes of data without host having to resend the address byte(s) and stop bit repeatedly.

Regards,

Michael

Michael - san,

Please give me more information about the block write/read for DS80PCI402.

What should we set Command Code register for Block Write or Read ? Please give me example.

Best Regards,

Kato

Michael - san,

We are understanding Block Write protocol is drawing below. and we have some questions.

Q1(①)

Should we write address of register map ?

Q2(②)

How is DS80PCI402 distinguished between Data Byte and Byte Count = N ?

Best Regards,

Kato