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TAG3 Serial Flash Configuration

TAG3 Serial Flash Configuration

Anonymous
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TAG3 Serial Flash Configuration

This BLOG is a short introduction for configuring the TAG3 board for use with the Serial FLASH.

This information is taken from our TAG3 document Manual :  The specified document was not found. and our Quick Start Guide The specified document was not found.

1.  The TAG3 board contains a Serial FLASH device and can be configured with a few resistor modifications and additions:

See the TAG3 Board below:

TAG3Board_SFLASH.JPG

2.  TAG3 Board Assembly displaying the resistor installation/modifications for the on board Serial FLASH:

pastedImage_1.png

3.  The table below defines the resistors to configure the Serial FLASH:

pastedImage_2.png

4.  You will need to place the SW4 switches 5,6,7,8 in the OFF position (They are actually show in the ON Position in this photo):

pastedImage_0.png

5.  In the SDK you will need to modify your Make Target to include NV=SFLASH:

Note: In this case we have used COM Port 21 as observed in our Windows Device Manager:

pastedImage_0.png

pastedImage_3.png

5.  Using the Recovery Procedure from the The specified document was not found. document, your recovering console message should look like the following:

pastedImage_6.png

A few extra notes about Serial FLASH:

 

You will need to use the same Macronix Serial Flash that is supported by the ROM and ships on the TAG3 board.  Please see the schematic snippet below:

 

pastedImage_1.png

 

The Macronix MX25U4033 device works as well if you needed a second option.

Please see the notes below:

 

MX25U4033: https://www.macronix.com/en-us/products/NOR-Flash/Serial-NOR-Flash/Pages/spec.aspx?p=MX25U4033E&m=Se...  (good for new designs)

 

MX25U4035: https://www.macronix.com/en-us/products/NOR-Flash/Serial-NOR-Flash/Pages/spec.aspx?p=MX25U4035&m=Ser...  (not recommended for new designs)

Regarding the two different Flash PNs, here’s a document from the Macronix website that compares the two:

https://www.macronix.com/Lists/ApplicationNote/Attachments/1872/AN126V1_MX25U4035%20to%204033E.pdf

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ShawnA_01
Employee
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Employee

Very nice!  Thank you sir JT.

Anonymous
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What's the value for the R100 and R101"install" ?

MichaelF_56
Moderator
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Per the schematic in the back of the Hardware User Guide (SDK 2.x and TAG3 Board), I believe these are 0 Ohm DNI resistors.

Anonymous
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For EEPROM, R100 and R101 are DNI, 0 Ohm.  But for the Serial Flash,  they are "Install",   I need to know the "Install" value, the resistor size...   Thank you!

MichaelF_56
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Moderator

Will ask someone from the Apps team to respond.

markusz j.t

Anonymous
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Hi mwf_mmfae,

Thank you very much!

Ellen

Anonymous
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Hello Ellen,

The "Install" value is a 0 Ohm resistor.

Thanks

JT

Anonymous
Not applicable

Hi JT,

Thank you very much!

Do you have BCM20737A1KML2G datasheet? I could not find it in the Broadcom website.

Best regards,

Ellen

MichaelF_56
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Moderator
Anonymous
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Thank you so much mwf_mmfae !

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