+``` from http://openocd.org/doc/html/Debug-Adapter-Configuration.html#index-ftdi
+List of connections (default physical pin numbers for FT232R in 28-pin SSOP package):
+
+ - RXD(5) - TDI
+ - TXD(1) - TCK
+ - RTS(3) - TDO
+ - CTS(11) - TMS
+ - DTR(2) - TRST
+ - DCD(10) - SRST
+```
+
+``` from https://github.com/ntfreak/openocd/blob/master/src/jtag/drivers/ft232r.c#L79-L99
+/**
+ * FT232R GPIO bit number to RS232 name
+ */
+#define FT232R_BIT_COUNT 8
+static char *ft232r_bit_name_array[FT232R_BIT_COUNT] = {
+ "TXD", /* 0: pin 1 TCK output */
+ "RXD", /* 1: pin 5 TDI output */
+ "RTS", /* 2: pin 3 TDO input */
+ "CTS", /* 3: pin 11 TMS output */
+ "DTR", /* 4: pin 2 /TRST output */
+ "DSR", /* 5: pin 9 unused */
+ "DCD", /* 6: pin 10 /SYSRST output */
+ "RI" /* 7: pin 6 unused */
+};
+
+static int tck_gpio; /* initialized to 0 by default */
+static int tdi_gpio = 1;
+static int tdo_gpio = 2;
+static int tms_gpio = 3;
+static int ntrst_gpio = 4;
+static int nsysrst_gpio = 6;
+```
+
+```from ft232 usb to 6 pin female header manual
+
+ft232 pin and wire colour table converted to jtag signal names:
+
+```
+|-------|------|--------|----------|
+| Pin # | JTAG | FT232 | Colour |
+|-------|------|--------|----------|
+| 1 | VCC | VCC | Red |
+| 2 | GND | GND | Black |
+| 3 | TCK | TXD | White |
+| 4 | TDI | RXD | Green |
+| 5 | TDO | RTS | Yellow |
+| 6 | TMS | CTS | Blue |
+|-------|------|--------|----------|
+```
+Proposed FPGA External Pin to ft232r JTAG pin connections: