topic Re: PN7160B - CPOL Configuration in NFC

PN7160B - CPOL Configuration

michael_d_1983 — Wed, 13 Jul 2022 11:08:12 GMT

Hello,

As described in PN7160 Datasheet, 11.2.2.2 SPI-bus configuration options:

In order to select SPI-bus interface for host communication, some EEPROM settings are
programmed during production.
Four versions can be configured depending on CPOL/CPHA EEPROM setting.
The selection between interfaces is fused during IC manufacturing so that different
ordering numbers for the SPI-bus version.

I have not found any information on different ordernumbers that affect the settings.
Is this an error?

Thanks,

Michael

Re: PN7160B - CPOL Configuration

Erklei — Mon, 01 Aug 2022 13:45:39 GMT

I think only I2C vs SPI is programmed during manufacturing. Part number ending with "A" is I2C and "B" is SPI. Clock polarity can be changed later

Re: PN7160B - CPOL Configuration

Fabian_R — Wed, 03 Aug 2022 16:12:19 GMT

Hello sir,

Unfortunately, the datasheet needs an update. The PN7160 is configured as follows:

CPHA=0

IFSEL1=0

I hope this information may have been useful.