diff --git a/BOOKSHELF b/BOOKSHELF
index 39bbffb..b15a69b 100644
--- a/BOOKSHELF
+++ b/BOOKSHELF
@@ -67,3 +67,9 @@ A: U18
 A: U19
 A: U20
 D: http://focus.ti.com/lit/ds/symlink/tps79325-q1.pdf
+
+N: ft2232h
+D: http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT2232H.pdf
+
+N: ft2232c
+D: http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT2232C.pdf