r5196 - trunk/gta02-core/docs/ecn

werner at docs.openmoko.org werner at docs.openmoko.org
Mon Jun 22 16:01:11 CEST 2009


Author: werner
Date: 2009-06-22 16:01:10 +0200 (Mon, 22 Jun 2009)
New Revision: 5196

Added:
   trunk/gta02-core/docs/ecn/ecn0016.txt
   trunk/gta02-core/docs/ecn/ecn0017.txt
Modified:
   trunk/gta02-core/docs/ecn/STATUS
Log:
Added two more ECNs:

0016  Remove upper acceleration sensor (U7801)
0017  Move Bluetooth module (U2) to main PCB



Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS	2009-06-22 13:27:20 UTC (rev 5195)
+++ trunk/gta02-core/docs/ecn/STATUS	2009-06-22 14:01:10 UTC (rev 5196)
@@ -15,3 +15,5 @@
 0013	Defer	Increase rated current of B4902
 0014	Defer	Limit non-ESD overvoltage on USB_VBUS
 0015	Edit	Remove Calypso serial interface on headset (U4401)
+0016	Edit	Remove upper acceleration sensor (U7801)
+0017	Edit	Move Bluetooth module (U2) to main PCB

Added: trunk/gta02-core/docs/ecn/ecn0016.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0016.txt	                        (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0016.txt	2009-06-22 14:01:10 UTC (rev 5196)
@@ -0,0 +1,12 @@
+Remove upper acceleration sensor (U7801)
+
+
+Despite many claims that two acceleration sensors provide enhanced
+sensing capabilities, one year after the introduction of GTA02, no
+application seems to make use of both sensors. We can therefore
+conclude that the second sensor is of little or no practical use.
+
+To do:
+- why the upper ?
+- items to remove
+- connect both interrupts (motivation)

Added: trunk/gta02-core/docs/ecn/ecn0017.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0017.txt	                        (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0017.txt	2009-06-22 14:01:10 UTC (rev 5196)
@@ -0,0 +1,7 @@
+Move Bluetooth module (U2) to main PCB
+
+
+To do:
+- explain FPC issues
+- good old times of GTA01Bv2:
+  http://people.openmoko.org/werner/retro/gta01-bt.jpg




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