EZ-USB® GX3™ Hardware Design Guidelines, EEPROM use

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juan_cab
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Hi, I have a question about EZ-USB® GX3™ Hardware Design Guidelines file. I'm reading the document, and I have found this:

juan_cab_0-1636627526030.png

 

I have searched the EEPROM components but, on this datasheet (https://www.mouser.es/datasheet/2/268/21794b-74044.pdf) A model is 8-bit and B model is 16 bit. Is this a errata?

 

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JayakrishnaT_76
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Hello,

In the following document, it is mentioned that the internal memory organization of AT93C56A is user configurable using ORG pin:

http://ww1.microchip.com/downloads/en/devicedoc/doc3378.pdf

When the ORG pin is pulled up as shown in the reference in GX3 Hardware Design Guideline, 16 bit mode will be selected. But, as mentioned in the above document, AT93C56A/AT93C66A is not recommended for new designs and AT93C66A/AT93C66B should be used.


Best Regards,
Jayakrishna

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JayakrishnaT_76
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First question asked 1000 replies posted 750 replies posted

Hello,

In the following document, it is mentioned that the internal memory organization of AT93C56A is user configurable using ORG pin:

http://ww1.microchip.com/downloads/en/devicedoc/doc3378.pdf

When the ORG pin is pulled up as shown in the reference in GX3 Hardware Design Guideline, 16 bit mode will be selected. But, as mentioned in the above document, AT93C56A/AT93C66A is not recommended for new designs and AT93C66A/AT93C66B should be used.


Best Regards,
Jayakrishna
juan_cab
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Yes but, the same part number without AT (93C56/93C66) don't have ORG pin, it depends if is A or B model. Then, any memory with 16 bit is ok for the design, doesn't it?

Thank you so much for your reply. 

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Hello,

The hardware design guideline actually mentions about AT93C56/AT93C66 as is shown in the figure 21 shared in your original description. Also, the EEPROM used in the GX3 RDK is AT93C66A. Kindly make use of AT93C56/AT93C66. As mentioned in the datasheet of AT93C56A/AT93C66A, these parts are not recommended for new designs and AT93C56B/AT93C66B should be used.

You can download the schematics of GX3 RDK from the following link:

https://www.cypress.com/documentation/reference-designs/ez-usb-gx3-usb-type-c-gigabit-ethernet-dongl...

If you are looking for an alternative EEPROM, then please refer to the following thread:

https://community.infineon.com/t5/USB-Superspeed-Peripherals/External-EEPROM-for-GX3/m-p/177435

Apart from these, we currently do not have any other EEPROM recommendations.

Also, if you are planning to use GX3 in a new design, then please note that it is not recommended for a new design. This is already mentioned in the following thread:

https://community.infineon.com/t5/USB-Superspeed-Peripherals/cyusb3610-chip/m-p/285363

Best Regards,
Jayakrishna
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Thank you so much for your reply Jayakrisnha.

 

I want to transmit data by ethernet lines, and then send the data by USB lines,. Is there any other similar component from Cypress por this target?

 

 

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Hello,

Currently, we do not have a similar component that can be used as an ethernet to USB bridge.

Best Regards,
Jayakrishna
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