Changes between Version 108 and Version 109 of gsc

Timestamp:

11/06/2023 11:55:54 PM (13 months ago)

Author:

Tim Harvey

Comment:

add GSC_POWER_CONTROL register configuration details

gsc

@@ -81 +81 @@
 || 22           || [#GSC_MEM_ACCESS_PAGE GSC_MEM_ACCESS_PAGE]  || Direct Memory Access Page Number              || GSCv3 ||
 || 23           || [#GSC_CTRL_2 GSC_CTRL_2]           || Pushbutton Switch, Misc.                      || GSCv3 ||
+|| 25           || [#GSC_POWER_CONTROL GSC_POWER_CONTROL]   || Power Configuration || GSCv3 ||
 || 26           || [#GSC_SOFT_POWER_TIME GSC_SOFT_POWER_TIME]  || Soft Power Press Time                         || GSCv3 ||
 || 31           || [#GSC_REGISTER_BACKUP GSC_REGISTER_BACKUP]  || Register Backup Control                           || GSCv3 ||
@@ -252 +253 @@
 || 0 || GSC_10X_PRESS_DISABLE || Disable 10x press for loading FACTORY registers (see [#GSC_REGISTER_BACKUP register backup]) ||
 || 1 || GSC_SOFT_WAKE_PROTECT || Disable waking from soft power press if VIN below board preset minimum ||
+
+[=#GSC_POWER_CONTROL]
+=== GSC_POWER_CONTROL (Register R25): Power Control
+Supported in '''GSCv3 firmware v63+'''. This register controls various power configuration details.
+
+||= Bit =||= Name =||= Description =||
+|| 0  || GSC_POWER_SUPERVISOR_ENABLE || 1=Enable voltage supervisor 0=Disable voltage supervisor ||
+
+When enabled the voltage supervisor will cause the GSC to reset when the battery voltage drops below 1.85V to 1.80V. When disabled the GSC may remain powered down to a lower battery voltage but in some cases a battery value between 1.8V and 0.66V can result in a board in the GSC 'sleep' state to not be able to wake the board back up until the battery drops below 0.66V.
+
+Newer hardware has an independent power supply to the GSC allowing the GSC to be powered from Vin to avoid the potential risk that a GSC sleep with a low battery can end up in a stuck state.
+
+See [wiki:venice//errata#VN8 Venice errata VN8]
 
 [=#GSC_SOFT_POWER_TIME]