r4531 - developers/werner

[werner at docs.openmoko.org]

Author: werner
Date: 2008-07-16 22:11:46 +0200 (Wed, 16 Jul 2008)
New Revision: 4531

Added:
   developers/werner/gta02-current-chart.txt
   developers/werner/gta02-voltage-chart.txt
Log:
- added more voltages (regulators, backup battery)
- added current chart



Added: developers/werner/gta02-current-chart.txt
===================================================================
--- developers/werner/gta02-current-chart.txt	                        (rev 0)
+++ developers/werner/gta02-current-chart.txt	2008-07-16 20:11:46 UTC (rev 4531)
@@ -0,0 +1,32 @@
+Current	Where	What happens
+
+2200 mA BAT	BAT-SYS current limit (NoPower default)
+1800 mA	BAT	Maximum discharge current of GTA01 battery
+1600 mA	BAT	BAT-SYS current limit (set by u-boot)
+1200 mA	BAT	Quick charging current of GTA01 battery
+1000 mA	USB	Maximum current the Neo can draw from the adapter
+ 600 mA	BAT	Standard charge current of GTA01 battery
+ 510 mA	DOWN1	DOWN1 (CORE_1V3) startup limit (set by u-boot)
+ 510 mA	DOWN2	DOWN2 (IO_1V8) startup limit (set by u-boot)
+ 500 mA	USB	Maximum USB current (if upstream allows it; Standby default)
+ 500 mA	LED	Maximum backlight current (OCP, set by u-boot)
+ 400 mA	AUTO	AUTO (IO_3V3) startup limit (Standby default and set by u-boot)
+ 390 mA	DOWN1	DOWN1 (CORE_1V3) startup limit (Standby default)
+ 390 mA	DOWN2	DOWN2 (IO_1V8) startup limit (Standby default)
+ 200 mA	HCLDO	Maximum HXLDO output (hardware limitation)
+ 150 mA	LDOx	Maximum LDO4/5 output (hardware limitation)
+ 100 mA	USB	Default USB current (available without asking upstream)
+  98 mA	BAT	Pre-charge current limit (set by u-boot)
+  98 mA	BAT	"Fast charge" current limit while in wait_for_power
+  50 mA	LDOx	Maximum LDO1/2/3/6 output (hardware limitation)
+  13 mA	LED	LED current (set by u-boot) (*)
+  200uA BUB	Backup battery charge current (set by u-boot)
+   50uA BUB	Backup battery charge current (NoPower default)
+   0 mA	BAT	Pre-charge current limit (NoPower default)
+   0 mA	BAT	Fast charge current limit (NoPower default)
+
+(*) I hope I got this one right:
+    Rsense = 42.2 Ohm (R1763)
+    led_out = 0x2f
+    Vledfb = (e(led_out/20)-1)/(e(63/20)-1)*1.25V = 0.531V
+    Iled = Vledfb/Rsense

Added: developers/werner/gta02-voltage-chart.txt
===================================================================
--- developers/werner/gta02-voltage-chart.txt	                        (rev 0)
+++ developers/werner/gta02-voltage-chart.txt	2008-07-16 20:11:46 UTC (rev 4531)
@@ -0,0 +1,38 @@
+Voltage	Where	What happens
+
+ 4.5 V	USB	USB voltage required for battery charging
+	USB	Minimum USB voltage at device guaranteed by USB 2.0
+ 4.2 V	BAT	Battery float voltage (NoPower default and u-boot setting)
+ 3.6 V	USB	+/- 0.35V, USB adapter present (rising)
+ 3.5 V	USB	+/- 0.35V, USB adapter present (falling)
+ 3.4 V	BAT	u-boot wait_for_power threshold
+ 3.3 V	AUTO	AUTO (IO_3V3) voltage (Standby default and set by u-boot)
+ 3.3 V	LDO1	LDO1 (GSENSOR_3V3) voltage (set by u-boot)
+ 3.3 V	LDO2	LDO2 (CODEC_3V3) voltage (set by u-boot)
+ 3.3 V	HCLDO	HCLDO (SD_3V3) voltage (set by u-boot)
+ 3.1 V	SYS	Minimum SYS voltage, interrupt and timeout (set by u-boot)
+ 3.1 V	BAT	Battery threshold (NoPower default)
+ 3.0 V	SYS	Minimum SYS voltage, interrupt and timeout (NoPower default)
+ 3.0 V	BUB	Backup battery charge voltage limit (set by u-boot)
+ 3.0 V	LDO5	LDO5 (RF_3V) voltage (set by u-boot)
+ 3.0 V	LDO6	LDO6 (LCM_3V) voltage (Standby default and set by u-boot)
+ 2.85V	BAT	Battery conditioning (NoPower default)
+ 2.8 V	BAT	Battery threshold (set by u-boot)
+ 2.8 V	LDO1	LDO1 (GSENSOR_3V3) voltage (Standby default)
+ 2.8 V	LDO4	LDO4 (BT_3V2) voltage (Standby default)
+ 2.7 V	BAT	Battery conditioning (set by u-boot)
+ 2.5 V	SYS	SYS voltage for immediate shutdown into Save mode
+ 2.5 V	BUB	Backup battery charge voltage limit (NoPower default)
+ 2.4 V	BAT	GTA02 battery cuts off
+ 2.2 V	BAT	GTA01 battery cuts off
+ 2.0 V	SYS	+/- 0.3V, SYS voltage to enter Save/NoPower
+ 1.8 V	DOWN2	DOWN2 (IO_1V8) voltage (Standby default and set by u-boot)
+ 1.3 V	BUB	+/- 0.3V, Backup battery present threshold
+ 1.3 V	DOWN1	DOWN1 (CORE_1V3) voltage (set by u-boot)
+ 1.2 V	DOWN1	DOWN1 (CORE_1V3) voltage (Standby default)
+ 0.0 V	BAT	No battery or battery in cut-off
+
+Notes:
+- LDO2, LDO3, LDO5, and HCLDO  are turned off in Standby.
+- we don't use LDO3.
+- LDO4 is turned off by u-boot.