am335x starterkit

Rajas Yaso

Other Parts Discussed in Thread: OMAP-L138, AM1808, AM3354

Hai

I am getting reference from am335x starterkit(TMDSSK3358 board) for my android device .i am using NAND flash from micron but in SK kit it doesn't had a NAND interface.So i get a reference from AM335X EVALUATION KIT.They were using 8 bit NAND flash but they use 16 bit I/O pins from IO0-IO15.

But for 8- bit FLASH,there 8 GPMC pins were ok for that,then it needs 16 pins???

In EVM kit,they were using 8 bit FLASH to connect via 16 GPMC pins,But in ANDROID source code,they activate only 8 pins and another 8-pins were alloted for 24-bit TFT LCD muxing via ALTERA FPGA.

But i didn't use that FPGA.

What can i do for my requirements??

Thanks in advance

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

Hi Rajas,

If you plan on using an 8-bit NAND flash, then you need only 8 data lines (GPMC_AD0 - GPMC_AD7). If you plan on using a 16-bit NAND flash, then you need all 16 data lines (GPMC_AD0 - GPMC_AD15).

0 Rajas Yaso over 12 years ago in reply to Biser Gatchev-XID

Intellectual 280 points

Hai

Really now i get a reference from the OMAP-L138 LCDK kit,Already we get the reference from LOGICPD AM1808 for AM1808 processor.I had that.

Is AM1808 is PIN to PIN compatible to OMAP-L138 respectively??

0 Biser Gatchev-XID over 12 years ago in reply to Rajas Yaso

TI__Guru**** 393215 points

Hi Rajas,

Here are a few threads that answer your question:

http://e2e.ti.com/support/arm/sitara_arm/f/42/t/111001.aspx

http://e2e.ti.com/support/arm/sitara_arm/f/42/t/99335.aspx

http://e2e.ti.com/support/arm/sitara_arm/f/42/t/37692.aspx

Please note that questions regarding the AM1808 should be posted in the Sitara AM1x ARM-based processors forum:

http://e2e.ti.com/support/arm/sitara_arm/f/42.aspx

This forum is for AM335X only.

0 Rajas Yaso over 12 years ago in reply to Biser Gatchev-XID

Intellectual 280 points

Hai

I am doing the development from reference TI STARTER KIT using AM3354 sitara processor.

In that SK kit They were using Atheros AR8031_ALR1 Ehernet PHY device,am also using the same but not that LINKPP RJ45 Connector.

I didn't get that exact connector (RJ45) i'm using the different one.Here i didn't get any data.ACTIVE LED doesn't glows up( GREEN & ORANGE LED)

May i know the RJ45 connector STANDARD it good varies internally because my PHY works.......but not RJ45 link.

What kind of Schematics in that RJ45 connector that they were using in TI STARTER KIT.

Thankyou

0 Biser Gatchev-XID over 12 years ago in reply to Rajas Yaso

TI__Guru**** 393215 points

There is no standard for RJ-45 connectors. You should find the datasheet for the one you are using and connect the PHY signals accordingly.

0 Biser Gatchev-XID over 12 years ago in reply to Biser Gatchev-XID

TI__Guru**** 393215 points

You should also be aware that the RJ-45 used in the Starter Kit has integrated magnetics. If the connector you are using doesn't have integrated magnetics it cannot be used as a direct replacement.

0 Rajas Yaso over 12 years ago in reply to Biser Gatchev-XID

Intellectual 280 points

Hai

I am using RJ45 with INTEGRATED MAGNETICS from stewart brand

http://media.digikey.com/pdf/Data%20Sheets/Stewart%20Connector%20PDFs/SI-61001-F.pdf

Thus any problem in this connector?

Thanks in advance biser

Thankyou

0 Biser Gatchev-XID over 12 years ago in reply to Rajas Yaso

TI__Guru**** 393215 points

You can compare the datasheet with the original connector, which can be found at this link: http://www.digikey.co.uk/product-search/en?Keywords=6605814-6&adpos=1t1&WT.term=6605814-6&WT.mc_id=Connectors%2C+Interconnects&WT.medium=cpc&WT.campaign=Connectors%2C+Interconnects&WT.srch=1&WT.content=text&type=Exact&WT.source=google&cshift_ck=CB3921B8-9E22-4C74-BC32-651306B6B7FDcsC2unvi8x&network=g

0 Rajas Yaso over 12 years ago in reply to Biser Gatchev-XID

Intellectual 280 points

Thankyou Biser....

I noted the RJ45 connector that you send to me.

I had one serious doubt in my development board...As already i told that I am using the same ETHERNET PHY which TI SK KIT using..but not RJ45 connector.

When i powerup my board it serves all the voltage,PHY ic also get the voltage but the ACT_LED doesn't glows....

Is there any relation between the RJ45 CONNECTOR link and the ACTIVE LED pins in the RJ45

Thankyou

0 Biser Gatchev-XID over 12 years ago in reply to Rajas Yaso

TI__Guru**** 393215 points

The LED's are controlled by the PHY. They light up when link has been established. You should check whether your software recognizes the PHY and initialises the Ethernet properly. I cannot help on software as I only work on hardware issues.

0 Rajas Yaso over 12 years ago in reply to Biser Gatchev-XID

Intellectual 280 points

Thankyou Biser

I recognizeit, I am also have the RJ45 connector but not the same as used in TI STARTER KIT.

In my software debug it shows

PHY DETECTED

ETHO0 NOT LINK READY...which means i didn't connect the correct RJ45???

How the LINK varies ?? i am also using RJ45..... RJ45 has any standard??

Already you told me to, my RJ45 (Stewart connector) is correct.If it is right then why that ACT_LED doesn't glows up?

0 Biser Gatchev-XID over 12 years ago in reply to Rajas Yaso

TI__Guru**** 393215 points

There may be a software problem in your configuration, or there may be a problem with the RGMII interface. The RGMII timing budget is very tight, so maybe your design is violating timing requirements. It is very important you perform timing analysis when designing your system using RGMII.

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