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Author Topic: FT4232H_I2C connection  (Read 159 times)

Arumugam

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FT4232H_I2C connection
« on: August 28, 2020, 03:59:08 PM »

Hi,
I could not find I2C application (schematics) with FT4232H datasheet.
Could you please review attached snapshot and let me know your comments.

1. I2C1 and I2C2 connection are OK ?
2. Can we use CD and DD bank pins general GPIO's ?

Thanks and Regards,
Arumugam.P
« Last Edit: August 30, 2020, 05:25:48 AM by Arumugam »
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FTDI Community

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Re: FT4232H_I2C connection
« Reply #1 on: September 01, 2020, 04:31:27 PM »

Hello,

Please refer to AN_135 MPSSE Basics which contains example circuits for I2C.
Please note that the I2C is a master only.

We also have Development Modules for test, evaluation and reference:

FT4232H Mini-Module
FT4232H-56 Mini-Module

Yes Port C and Port D could also be used for GPIO.
See the following application notes:

Bit Bang Modes for the FT232R and FT245R
AN_373 Bit-Bang Modes for the FT-X Series

Note that the bit bang/GPIO documents are not specifically for FT4232H but the same principles apply.

Best Regards,
FTDI Community
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Arumugam

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Re: FT4232H_I2C connection
« Reply #2 on: September 01, 2020, 04:41:27 PM »

Hi,
Thanks for your support.
I have a query on the FT4232H bit bang mode.
I understand ports C and D can be configured as either UART or bit bang.
But if I want to use the bit band port as regular GPIO port,  what is required from software perspective? Can you share an example code?



Thanks and Regards,
Arumugam.P
« Last Edit: September 01, 2020, 04:58:56 PM by Arumugam »
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cioma

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Re: FT4232H_I2C connection
« Reply #3 on: September 03, 2020, 05:27:04 PM »

Pinouts for FT232H, FT2232H, FT4232H MPSSE

Pin        JTAG  SPI   I2C
D0, output TCK   SCK   SCL
D1, output TDI   MOSI  SDAO
D2, input  TDO   MISO  SDAI
D3, output TMS   SS#   no connection
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FTDI Community

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Re: FT4232H_I2C connection
« Reply #4 on: September 04, 2020, 04:21:05 PM »

Hello,

Example code of bit bang/GPIO is shown in the documents linked in the previous post.

Best Regards,
FTDI Community
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