Analog Devices uses six designations to inform our customers where a semiconductor product is in its life cycle. From emerging innovations to products which have been in production for twenty years, we understand that insight into life cycle status is important. Device life cycles are tracked on their individual product pages on analog.com, and should always be consulted before making any design decisions.
This particular articl/edocument/design has been retired or deprecated, which means it is no longer maintained or actively updated, even though the devices themselves may be Recommended for New Designs or in Production. This page is here for historical/reference purposes only.
NAME xcomm_cal - print and set EEPROM calibration data SYNOPSIS xcomm_cal [-s] [-f FREQUENCY] INPUT_FILE DESCRIPTION Print and set EEPROM calibration data. Without option - print all calibration sets available. -f Target frequency in MHz -s Initialize device drivers with best match calibration set. This option is used together with the -f option.
Git: https://github.com/analogdevicesinc/fmcomms1-eeprom-cal
root@linaro-ubuntu-desktop:~# git clone https://github.com/analogdevicesinc/fmcomms1-eeprom-cal.git root@linaro-ubuntu-desktop:~# cd fmcomms1-eeprom-cal root@linaro-ubuntu-desktop:~# make root@linaro-ubuntu-desktop:~# make install
Normally, the calibration EEPROM responds to I2C Slave address 0x55, but it depends on the hardware carrier, and the slot that the card is plugged into.
To find the eeprom - use the find
command.
root@linaro-ubuntu-desktop:~# find /sys/ -name eeprom /sys/devices/amba.1/41600000.i2c/i2c-1/1-0050/eeprom /sys/devices/amba.1/41600000.i2c/i2c-1/1-0054/eeprom
It's normally the largest value. (the smaller value is the FRU eeprom).
This specifies any shell prompt running on the target
# xcomm_cal -f 2400 -s /sys/bus/i2c/devices/0-0055/eeprom --- Best match ENTRY 1 --- Calibration Frequency: 2400 MHz DAC I Phase Adjust: 357 DAC Q Phase Adjust: 0 DAC I Offset: 214 DAC Q Offset: 25 DAC I Full Scale Adj: 401 DAC Q Full Scale Adj: 401 ADC I Offset: -2 ADC Q Offset: -34 ADC I Gain Adj: 32853 ADC Q Gain Adj: 32768