Latest revision as of 17:20, 26 July 2023

FT2232H breakout board

This is the documentation page for the FT2232H breakout board.

Overview

The FT2232H breakout board has an USB connector, two 6 pin SPI connectors, two 4 pin I2C connectors and a general purpose connector. Besides that there are two jumpers for enabling the I2C ports, and a selector jumper that allows you to chose between 3.3V or 5V on the IO connectors.

For (high speed) SPI and I2C, the FT2232H "works", but is superceded by the newer FT4222H. You can buy the BitWizard FT4222H breakout here.

External resources

Pinout

For the SPI connector pinout please see: SPI_connector_pinout

for the I2C connector pinout please see: I2C_connector_pinout

The general purpose connector J1 is:

GND	1	2	VCC
ACBUS0	3	4	ACBUS1
ACBUS2	5	6	ACBUS3
ACBUS4	7	8	ACBUS5
ACBUS6	9	10	ACBUS7

LEDS

pwr is connected tot the 3.3V of the board.

If the led doesn't light when you expect it to be, then there is something seriously wrong. (or you need to plug it in).

Jumper settings

J5: selection of IO voltage provided on the connectors:

1-2 3.3V
2-3 5V.

I2CB-EN and I2CA-EN:

To enable I2C (and disable SPI) add a jumper.

Future hardware enhancements

Consider pullups on the board for I2C operation.

Changelog

1.0: initial testing version
1.1: public release.

@@ Line 5: / Line 5: @@
 == Overview ==
-The FT2232H breakout board has an USB connector, two 20-pin HDR-standard IO connectors (one for BUS0 and one for BUS1), and one 40-pin terasic compatible connector. The brains of the PCB, of course, is an FT2232H chip.
+The FT2232H breakout board has an USB connector, two 6 pin SPI connectors, two 4 pin I2C connectors and a general purpose connector. Besides that there are two jumpers for enabling the I2C ports, and a selector jumper that allows you to chose between 3.3V or 5V on the IO connectors.
+For (high speed) SPI and I2C, the FT2232H "works", but is superceded by the newer FT4222H. You can buy the  [https://bitwizard.nl/shop/FT4222h-Breakout-Board BitWizard FT4222H breakout here].
 == External resources ==
@@ Line 14: / Line 16: @@
 == Pinout ==
+For the SPI connector pinout please see: [[SPI_connector_pinout]]
-The SV1 connector is designed to be connected to the 40 pin expansion connector of Terasic FPGA boards. This can be done with a standard 40 pin IDE cable, provided that it isn't too long.
+for the I2C connector pinout please see: [[I2C_connector_pinout]]
--pin connector SV1 is connected as follows:
-<table border=1>
-<tr><td>ACBUS5</td><td>1</td><td>2</td><td>NC</td></tr>
-<tr><td>NC</td><td>3</td><td>4</td><td>NC</td></tr>
-<tr><td>ADBUS0</td><td>5</td><td>6</td><td>ADBUS1</td></tr>
-<tr><td>ADBUS2</td><td>7</td><td>8</td><td>ADBUS3</td></tr>
-<tr><td>ADBUS4</td><td>9</td><td>10</td><td>ADBUS5</td></tr>
-<tr><td>5V</td><td>11</td><td>12</td><td>GND</td></tr>
-<tr><td>ADBUS6</td><td>13</td><td>14</td><td>ADBUS7</td></tr>
-<tr><td>ACBUS0</td><td>15</td><td>16</td><td>ACBUS1</td></tr>
-<tr><td>ACBUS2</td><td>17</td><td>18</td><td>ACBUS3</td></tr>
-<tr><td>ACBUS4</td><td>19</td><td>20</td><td>ACBUS5</td></tr>
-<tr><td>ACBUS6</td><td>21</td><td>22</td><td>ACBUS7</td></tr>
-<tr><td>BDBUS0</td><td>23</td><td>24</td><td>BDBUS1</td></tr>
-<tr><td>BDBUS2</td><td>25</td><td>26</td><td>BDBUS3</td></tr>
-<tr><td>BDBUS4</td><td>27</td><td>28</td><td>BDBUS5</td></tr>
-<tr><td>3V3</td><td>29</td><td>30</td><td>GND</td></tr>
-<tr><td>BDBUS6</td><td>31</td><td>32</td><td>BDBUS7</td></tr>
-<tr><td>BCBUS0</td><td>33</td><td>34</td><td>BCBUS1</td></tr>
-<tr><td>BCBUS2</td><td>35</td><td>36</td><td>BCBUS3</td></tr>
-<tr><td>BCBUS4</td><td>37</td><td>38</td><td>BCBUS5</td></tr>
-<tr><td>BCBUS6</td><td>39</td><td>40</td><td>BCBUS7</td></tr>
-</table>
-Connectors SV4 and SV5 are designed to be compatible with the 20-pin IO connectors also found on other BitWizard boards.
--pin connector SV4 is connected as follows:
+The general purpose connector J1 is:
 <table border=1>
-<tr><td>GND</td><td>1</td><td>2</td><td>GND</td></tr>
+<tr><td>GND</td><td>1</td><td>2</td><td>VCC</td></tr>
-<tr><td>ADBUS0</td><td>3</td><td>4</td><td>ADBUS1</td></tr>
+<tr><td>ACBUS0</td><td>3</td><td>4</td><td>ACBUS1</td></tr>
-<tr><td>ADBUS2</td><td>5</td><td>6</td><td>ADBUS3</td></tr>
+<tr><td>ACBUS2</td><td>5</td><td>6</td><td>ACBUS3</td></tr>
-<tr><td>ADBUS4</td><td>7</td><td>8</td><td>ADBUS5</td></tr>
+<tr><td>ACBUS4</td><td>7</td><td>8</td><td>ACBUS5</td></tr>
-<tr><td>ADBUS6</td><td>9</td><td>10</td><td>ADBUS7</td></tr>
+<tr><td>ACBUS6</td><td>9</td><td>10</td><td>ACBUS7</td></tr>
-<tr><td>ACBUS0</td><td>11</td><td>12</td><td>ACBUS1</td></tr>
-<tr><td>ACBUS2</td><td>13</td><td>14</td><td>ACBUS3</td></tr>
-<tr><td>ACBUS4</td><td>15</td><td>16</td><td>ACBUS5</td></tr>
-<tr><td>ACBUS6</td><td>17</td><td>18</td><td>ACBUS7</td></tr>
-<tr><td>3V3</td><td>19</td><td>20</td><td>3V3</td></tr>
 </table>
--pin connector SV5 is connected as follows:
-<table border=1>
-<tr><td>GND</td><td>1</td><td>2</td><td>GND</td></tr>
-<tr><td>BDBUS0</td><td>3</td><td>4</td><td>BDBUS1</td></tr>
-<tr><td>BDBUS2</td><td>5</td><td>6</td><td>BDBUS3</td></tr>
-<tr><td>BDBUS4</td><td>7</td><td>8</td><td>BDBUS5</td></tr>
-<tr><td>BDBUS6</td><td>9</td><td>10</td><td>BDBUS7</td></tr>
-<tr><td>BCBUS0</td><td>11</td><td>12</td><td>BCBUS1</td></tr>
-<tr><td>BCBUS2</td><td>13</td><td>14</td><td>BCBUS3</td></tr>
-<tr><td>BCBUS4</td><td>15</td><td>16</td><td>BCBUS5</td></tr>
-<tr><td>BCBUS6</td><td>17</td><td>18</td><td>BCBUS7</td></tr>
-<tr><td>3V3</td><td>19</td><td>20</td><td>3V3</td></tr>
-</table>
 === LEDS ===
-* led1 is connected to VCC
+* pwr is connected tot the 3.3V of the board.
+If the led doesn't light when you expect it to be, then there is something seriously wrong. (or you need to plug it in).
 == Jumper settings ==
+J5: selection of IO voltage provided on the connectors:
-==== For 2.0 ====
+* 1-2 3.3V
+* 2-3 5V.
+I2CB-EN and I2CA-EN:
-SV2: 3V3 supply selection<br>
--2: Direct from FPGA board (through 40-pin connector)<br>
--3: From regulator (see SV3 settings)<br>
+To enable I2C (and disable SPI) add a jumper.
-SV3: Regulator power source selection<br>
--2: Powered from USB<br>
--3: Powered from FPGA board (through 40-pin connector)<br>
-==== For 2.1 ====
-J1: 3V3 supply selection<br>
--2: Direct from FPGA board (through 40-pin connector)<br>
--3: From regulator (see J2 settings)<br>
-J2: Regulator power source selection (physical position is the same as in 2.0, only numbering has changed)<br>
--2: Powered from FPGA board (through 40-pin connector)<br>
--3: Powered from USB<br>
 == Future hardware enhancements ==
+* Consider pullups on the board for I2C operation.
 == Changelog ==
-.1
-* Renamed SV2 to J1
-* Renamed SV3 to J2
-* Jumper settings marked on PCB
-* Moved center of mounting holes to 3mm from PCB edge
+* 1.0: initial testing version
-.0
-* Initial public release
+* 1.1: public release.

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