Cirrus Logic CDB42438 - Manual (Page 23)

CDB42438
DS646DB2 23
Function:
Selects either I ² S or Left Justified interface format for the CS5341. Reset to the CS5341 is toggled.
5.8.6 RESET (‘41_RST)
Default = 1
0 - CS5341 is held in reset
1 - CS5341 is taken out of reset
Function:
This bit toggles pin 30 of the FPGA and is held low for 300
µs upon FPGA initialization. It will also be
held low for 300
µs whenever register 08h[1] changes.