changeset 91:711358516b55

venus/doc/MEMIF-fixed-2.8V: update for new MCP
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Dec 2021 03:34:04 +0000
parents e8ce3b688723
children 148fab6e07e3
files venus/doc/MEMIF-fixed-2.8V
diffstat 1 files changed, 4 insertions(+), 6 deletions(-) [+]
line wrap: on
line diff
--- a/venus/doc/MEMIF-fixed-2.8V	Fri Dec 10 23:00:44 2021 +0000
+++ b/venus/doc/MEMIF-fixed-2.8V	Sat Dec 11 03:34:04 2021 +0000
@@ -42,9 +42,7 @@
 
 When it comes to the flash+RAM MCP, we are being deliberately non-innovative:
 rather than explore potentially suitable parts on our own, we copy specific
-parts that have been used successfully in historical Calypso designs.  On
-FCDEV3B we copied Spansion S71PL129NC0HFW4B from Pirelli DP-L10, and the current
-plan for FC Venus is to copy S71PL064JA0BFW0B (smaller footprint and no reset
-complications like on FCDEV3B) from the TR-800 module.  All of our potential MCP
-choices from Spansion S71PL-J and S71PL-N families require a single supply
-between 2.7 and 3.1 V, hence 2.8V MEMIF.
+parts that have been used successfully in historical Calypso designs.  Our PCB
+footprint for flash+RAM MCP is compatible with Spansion S71PL064J, S71PL129J
+and S71PL129N families, and all of our potential MCP choices require a single
+supply between 2.7 and 3.1 V, hence 2.8V MEMIF.