Power Management中的主题 Re: FS23 SBC Chip

FS23 SBC Chip

MohamedSalah — Wed, 21 Feb 2024 09:34:09 GMT

Hello All,

I am using SBC FS2320 Chip in my project

I tried to communicate with it through SPI but whenever I read any register it returns zeroes

(Even if the Register contains some data)

After digging looks like it is Configured to communicate by default through I2C

From the Datasheet I found that I need to enter OTP_MODE to use SPI

and Change this bit :

[SPI_EN_OTP = 0] to be [SPI_EN_OTP = 1] That is present in the [OTP_MAIN_SYS_I2C_CFG] OTP_Register

The Question here :

1)Is this the right method ?

2)Is all FS2320 Chips come with I2C Configured by default ?

3)Is there any simpler way to communicate through SPI ?

4)In OTP mode I should read and right OTP registers using I2C , Right ?

Thanks a lot

TomasVaverka — Thu, 22 Feb 2024 07:28:22 GMT

Hello Mohamed,

What is the full part number you are using?

The A0 version is not programmed and the default communication is I2C (SPI_EN_OTP = 0).

Other versions may be programmed for SPI communication (SPI_EN_OTP = 1).

Are you using any of our evaluation boards?

BR, Tomas

MohamedSalah — Sun, 25 Feb 2024 14:25:12 GMT

Hi Thomas,

the SBC Chip I have is shown below :

PFS2320 B0L1W1

CTBUJA

is this the Full Part number ? or something is missing ?

I am using S23K312 MCU in a custom made PCB not using NXPs evaluation board.

So is this a normal OTP version or a changed one ?

Thanks for your fast reply

TomasVaverka — Mon, 26 Feb 2024 08:22:38 GMT

Hello Mohamed,

Better would be to get the full orderable part number, as shown in the datasheet (Table 2) or the Buy/Parametrics tab:

However, based on the marking on the picture, it seems that it is the non-programmed version with the default communication - I2C (SPI_EN_OTP = 0).

BR, Tomas

MohamedSalah — Mon, 26 Feb 2024 12:48:43 GMT

Hi Thomas,

if we consider that our board is BB1 version (I don't know if it is different will make sure and get back to you )

I found a Configuration report Document named :MFS2320BMBB1EP

(I have attached it to the message)

in page 5 there is a table talking about the SPI Feature and the OTP

in the last highlighted row is this an indication that SPI is enabled by OTP or could be enabled by OTP