-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said:
| Are you 100% sure that a good backup battery level is not required for | boot on a GTA02v5? Who can answer that for GTA01Bv4? Well, I have booted devices with very low backup battery level, during the time we hunted down the reason for this no-boot-with-low-or-no-battery issue I did check the battery state. And according to pcf50633 documentation, the effect of backup battery level is mainly to act as a gateway into NOPOWER state of the PMU, which is where we are at after manufacture anyway (and we evidently booted at that time). | Is there an easy way that I can test my theory that a dead backup | battery causes a dead device? Is there a test point on the GTA02 I can | look at to debug whether the PMU is powering up the device or not? VB_SYS which shows how you're doing on with this "trap" issue is under the main "can" unfortunately. | Is there a safe way to recharge the backup battery in-circuit using | external means when it's voltage is this low and the device refuses to | power-on? | | If the battery cannot be easily recharged, what is the exact type of | battery used for the backup battery, and how is it attached to the board | (it seems to be soldered in) - what is the easiest way to detach or | desolder the current battery and install a new one? No it is rechargeable and is trickle-charged by the PMU during operation. If I wanted to do what you want, I would desolder the battery and then drive that signal from somewhere else, like IO_3V3 via a resistor. But my comfort level about trashing things is a bit higher than a customer's... - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkiB8NIACgkQOjLpvpq7dMqvNQCfZCkabUDc//GADv15LRqZ46we 7uQAn3C0aMu2WSM5rKAnHTMTiVQajY0p =L5pj -----END PGP SIGNATURE-----
