diff DUART-cable @ 32:78c2cc6ebbb8

DUART-cable: update for DUART28
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 24 Sep 2020 02:47:14 +0000
parents f7ed8c45a8ec
children
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--- a/DUART-cable	Wed Sep 23 23:06:58 2020 +0000
+++ b/DUART-cable	Thu Sep 24 02:47:14 2020 +0000
@@ -1,3 +1,14 @@
+2020-09 update: we have now produced our own DUART28 adapter that takes the
+place of PLDkit FT2232D breakout boards.  The article that follows was written
+in 2019-12, before our DUART28 was even conceived, and it was written for
+PLDkit FT2232D adapters.  The new cable that needs to be used with DUART28 is
+different: DUART28 brings out a 10-pin header in the same pinout as our Calypso
+boards, thus the connection between the two boards becomes a straight-through
+10-wire ribbon cable.
+
+Original 2019-12 article follows
+================================
+
 The Calypso chip has two UARTs, called MODEM and IrDA in the chip docs.  The
 primary UART (MODEM) has 4 signals (TxD, RxD, RTS and CTS), whereas the other
 UART (IrDA) has data leads only (TxD and RxD).  TI's C-Sample and D-Sample