Linkplay Technology Inc. A76F Manuel D’Utilisation

Linkplay WiFiAudio-A76 Specification 

WMB20170117

  1.2 

 

Document No.: WMB20170117 

 

Page 15 of 21 

 

A76 module has two power domains: VDDRTC and 5VIN. The following is recommended power on sequence. 

 

There are three I/O pins in RTC power domain: 

1.  PPRST_N: Power on reset and hardware reset signal input   
2.  WKUP_N: Power on signal input 
3.  PWRON: Power on signal output to turn on DCDC/LDO/Power switches 

Note: There is an R-C delay circuit on A76 for power on reset sequence, so you may consider PPRSET_N only as 
HW reset.   
 
The following are two power on sequences for typical applications