good book, you may find help.

9603_a1_1.2.pdf
an232-01.pdf
AN232-02.PDF
AN232-03.PDF
AN232-04.PDF
AN232-05.PDF
FT8U100ax.pdf
ft8U232.pdf
ft8U245.pdf
usb-232b.pdf
usb1
....\232-MCU1.BOM
....\232-MCU1.DSN
....\232-MCU1.LIB
....\232-MCU1.PDF
....\232-MCU1.SCH
....\232-MCU2.BOM
....\232-MCU2.DSN
....\232-MCU2.LIB
....\232-MCU2.PDF
....\232-MCU2.SCH
....\232-MCU3.BOM
....\232-MCU3.DSN
....\232-MCU3.LIB
....\232-MCU3.PDF
....\232-MCU3.SCH
....\USB-232A.BOM
....\USB-232A.DSN
....\USB-232A.LIB
....\USB-232A.PDF
....\USB-232A.SCH
....\USB-232A.SRC
....\USB-232B.BOM
....\USB-232B.DSN
....\USB-232B.LIB
....\USB-232B.PDF
....\USB-232B.SCH
....\USB-232B.SRC
....\USB-245A.BOM
....\USB-245A.DSN
....\USB-245A.LIB
....\USB-245A.PDF
....\USB-245A.SCH
....\USB-245A.SRC
....\USB-245B.BOM
....\USB-245B.DSN
....\USB-245B.LIB
....\USB-245B.PDF
....\USB-245B.SCH
....\USB-245B.SRC
....\USB-422.SCH
....\USB-SMC.LIB
....\USB-SMC.SRC
....\USB-SMC1.BAK
....\USB-SMC1.BOM
....\USB-SMC1.DSN
....\USB-SMC1.PDF
....\USB-SMC1.SCH
....\USB-SMC2.BAK
....\USB-SMC2.BOM
....\USB-SMC2.DSN
....\USB-SMC2.PDF
....\USB-SMC2.SCH
USBN9603.pdf

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