ITkPix E-fuse Codec

Utilities for encoding and decoding the data stored in the ITkPix ASIC e-fuses

Installation

Cpp

The itkpix-efuse-codec C++ library is header-only. Simply add the single_include/itkpix_efuse_codec/ directory to your project's include path and you should be able to #include "itkpix_efuse_codec.h.

Python

itkpix-efuse-codec is available on PyPi. Simply run the following command to install:

pip install itkpix-efuse-codec

Usage

Python

Command-line Utility

pip installing itkpix-efuse-codec givers you the efuse command-line utility, which has the encode and decode sub-commands.

encode

efuse -v encode BONN 0x146cb
Input:
   probe_location name  : BONN
   chip serial number   : 83659 (bin: 0b10100011011001011, hex: 0x146cb)
Encoded:
   encoded e-fuse (bin) : 00010001010001101100101100011111 (32 bits)
                  (hex) : 0x1146cb1f

decode

efuse -v decode 0x1146cb1f
Input:
    e-fuse data   (bin): 0b100010100011011001011
                  (hex): 0x1146cb
Decoded:
    chip serial number : 0x146cb
    probe location     : BONN (id: 0x1)

As a module

You can import the itkpix_efuse_codec module in your existing Python scripts. For example, to generate the 32-bit encoded E-fuse data you would do:

import itkpix_efuse_codec

probe_location_name : str = "BONN" # must be a valid name
chip_sn : int = 0x12345;
efuse_binary_string = itkpix_efuse_codec.encode(probe_location_name, chip_sn) # returns binary string

efuse_data = int(efuse_binary_string, 2) # parse the binary string into an integer

To decode 32-bit E-fuse data retreived from the ITkPix ASIC, you would do:

import itkpix_efuse_codec
from itkpix_efuse_codec import EfuseData

retrieved_efuse_data : int = ...
decoded_efuse_data = int(itkpix_efuse_codec.decode(retrieved_efuse_data), 2) # parse the binary string into an integer
efuse_data = EfuseData(decoded_efuse_data) # EfuseData class has useful getters

chip_sn = efuse_data.chip_sn()
probe_location_name = efuse_data.probe_location_name()
probe_location_id = efuse_data.probe_location_id()