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
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
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
BR, Tomas
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
