Si5338 driver

Reference Documentation

[1] [2]

sysfs interface

top level files

outputs

Read only, outputs information about each of the 4 outputs, like in the example below:

root@elphel393:/sys/devices/amba.0/e0004000.ps7-i2c/i2c-0/0-0070# cat outputs
0: 1V5_HSTL_A+, output frequency: 15000000 Hz, output route: MS0:1, ms_power_up, disabled state: dis_hi-z, output_power_up, output_en, Spread spectrum is ON, down amplitude= 500 ( *0.01%), spread rate= 31500 Hz
1: 2V5_LVPECL, output frequency: 0 Hz, output route: No clock, disabled state: dis_hi-z, output_power_down, output_en, Spread spectrum is OFF, down amplitude= 50 ( *0.01%), spread rate= 31500 Hz
2: 2V5_LVPECL, output frequency: 0 Hz, output route: No clock, disabled state: dis_hi-z, output_power_down, output_en, Spread spectrum is OFF, down amplitude= 50 ( *0.01%), spread rate= 31500 Hz
3: 1V8_LVDS, output frequency: 150000000 Hz, output route: MS3:1, ms_power_up, disabled state: dis_hi-z, output_power_up, output_en, Spread spectrum is ON, down amplitude= 50 ( *0.01%), spread rate= 31500 Hz

This includes:

• output voltage (1V5 - 1.5V)
• standard (HSTL)
• outputinversion for of the 2 paired outputs in single-ended mode ("A+B-" A positive, B - inverted; "A+" - output B is disabled)
• output frequency
• output route - each output can be fed from multiple sources ("IN3:2:8" would mean signal from input 3 divided by 2 in the input stage and by 8 in the output stage