r5567 - trunk/gta02-core/docs/ecn

[daveb at docs.openmoko.org]

Author: daveb
Date: 2009-08-28 22:27:52 +0200 (Fri, 28 Aug 2009)
New Revision: 5567

Added:
   trunk/gta02-core/docs/ecn/ecn0034.txt
Modified:
   trunk/gta02-core/docs/ecn/STATUS
Log:
new ecn0034 - route additional SPI and GPIO pins to debug connector


Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS	2009-08-28 18:29:15 UTC (rev 5566)
+++ trunk/gta02-core/docs/ecn/STATUS	2009-08-28 20:27:52 UTC (rev 5567)
@@ -32,7 +32,8 @@
 0030	Edit	Replace Calypso with Telit GE865
 0031	Execute	Use codec to detect jack insertion and HOLD button
 0032	Discuss Add EMI and ESD protection to headset jack
-0033    Discuss Replace coupling capacitors for input/output lines
+0033	Discuss	Replace coupling capacitors for input/output lines
+0034	Discuss	Route additional SPI/GPIO pins to debug connector
 
 Open ECNs
 ---------

Added: trunk/gta02-core/docs/ecn/ecn0034.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0034.txt	                        (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0034.txt	2009-08-28 20:27:52 UTC (rev 5567)
@@ -0,0 +1,34 @@
+Route additional SPI/GPIO pins to debug connector
+
+
+The gta02 debug connector exposed un unused SPI set, which is now 
+used by WLAN.  The sc32442 contains only two SPI controllers, used 
+for WLAN and Accelerometers in gta02-core.  However, the pins used 
+for these devices can be dissabled (configured as GPIO) and further
+pins can then be assigned to the SPI function.
+
+These additional pins can be used as GPIO, or switched to SPI if 
+the accelerometer is dissabled.
+
+Changes:
+ - route VD17/SPIMOSI1/GPD9, VD16/SPIMISO1/GPD8, VD9/SPICLK1/GPD1,
+   and VD8/nSPICS1/GPD0 to pins 10,11,12 on the debug connector
+
+ - move HDQ from VD8/nSPICS1/GPD0 to VD0/GPC8
+
+ - move LCD_nRES from VD17/SPIMOSI1/GPD9 to VD1/GPC9
+
+LCD_nRES and HDQ have both been moved since gta02 to accomodate the
+lcm move, and if this ecn is implimented their new locations should
+be noted in the relevant orginal ecn's
+
+It would be possible to also free up EINT11/nSS1/GPG3, which was 
+unused in gta02 and is currently used by WLAN_INT.  This could be 
+moved to EINT7 or EINT8
+
+
+With thanks to Rask Ingemann Lambertsen <ccc94453 at vip.cybercity.dk>
+for the idea and details in this ecn.
+
+
+Author: Dave Ball <openmoko at daveball.org.uk>