# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1521923904 0
# Node ID cbd944ebeff0164468ebeeff47990c7935ee2331
# Parent  81641d82ccc6fc0a86d8ecfc581d56c6daf21bc2
Pirelli PCB RE: traced out Calypso FDP and flash reset input

diff -r 81641d82ccc6 -r cbd944ebeff0 pirelli/fdp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pirelli/fdp	Sat Mar 24 20:38:24 2018 +0000
@@ -0,0 +1,20 @@
+The trace from S71PL129NC0 ball D5 (flash reset) goes to a pull-up resistor and
+to a microvia at (5130,717).  On L7 this microvia connects to an inner via at
+(5141,681).  Found it on L2, trace from inner via goes to a microvia to L1 at
+(4676,922).  On L1 the trace goes to a pair of resistor footprints, the left
+one is populated, the right one is not.  Tracing the populated branch: the
+trace goes to a microvia at (4516,1047).  On L2 the microvia connects to an
+inner via at (4540,1032).  Found it on L4, the trace goes through another inner
+via at (3718,1052) and finally to yet another inner via at (1699,1348).
+
+Tracing the populated branch from (1699,1348): found it on L2, goes to a
+microvia back to L1 at (1673,1352).  It is TCXOEN!
+
+Tracing the unpopulated resistor branch: microvia from L1 to L2 at (4665,892).
+On L2 the trace goes two ways: to another microvia back to L1 at (4142,802) and
+to an inner via at (5150,834).  The microvia back to L1 at (4142,802) falls on
+Calypso ball F4 - that's FDP!  Tracing the inner via at (5150,834): found it on
+L7, trace obscured by damage, apparently ends at (5169,751), there may have
+been a microvia around (5166,709).  It might be plausibly connected to the
+WP#/ACC pin, which is also pulled up like RST#, but the damage makes it
+impossible to trace for certain.
diff -r 81641d82ccc6 -r cbd944ebeff0 pirelli/vctcxo
--- a/pirelli/vctcxo	Sat Jan 20 21:00:13 2018 +0000
+++ b/pirelli/vctcxo	Sat Mar 24 20:38:24 2018 +0000
@@ -9,8 +9,8 @@
 (4518,1048).  Found it on L1, goes to some 2-pad footprint, can't tell if it's
 unpopulated or a faint black resistor.  The other end goes to a via at
 (4676,919).  Found it on L2, goes to inner via at (5135,684).  Found it on L7,
-goes to surface via at (5132,716).  Found it on L8 - goes to flash RY/BY# ball
-- WTF?
+goes to surface via at (5132,716).  Found it on L8 - goes to flash reset input
+on ball D5.  (Previously erroneously reported as RY/BY# ball E5.)
 
 Following the branch at (1699,1349): found it on L2, immediately goes back to
 L1 at (1673,1353).  Found it on L1, go to UL pad of the VCTCXO, passing by a