I found this old post about using that chip with the 20X2 https://picaxeforum.co.uk/threads/motion-controlled-glow-fans.15478/ - unfortunately there is no code but it can be made to work.I am not familiar with that chip and couldn't find anything on the forum
#Picaxe 20X2
#No_Data
Symbol MODE1 = $00
Symbol MODE2 = $01
Symbol LED0 = $02
Symbol LED1 = $03
Symbol LED2 = $04
Symbol LED3 = $05
Symbol GRPPWM = $06
Symbol GRPFREQ = $07
Symbol LEDOUT = $08
Init:
HI2cSetup I2CMASTER, %11000000, I2CSLOW, I2CBYTE
HI2cOut MODE1, ( %10000000 )
HI2cOut MODE2, ( %00000100 )
HI2cOut LEDOUT, ( %10101010 )
MainLoop:
Do
For b0 = 0 To 254
HI2cOut LED0, ( b0 )
Next
For b0 = 255 To 1 Step -1
HI2cOut LED0, ( b0 )
Next
Loop