TDA2x 100Mbit Ethernet

Benedikt Cyranka

Prodigy 50 points

Hi everbody,

i posted a picture from a tda2xx EVM.

My question is why they have the new release of the tda2xx evm this 100mbit sticker on the ethernet port?

Is there any problem with this ethernet port?

over 8 years ago

0 Yanko Todorov-XID over 8 years ago

TI__Mastermind 29520 points

Hello Benedikt,

There is a bug with RGMII module - RGMII2 (rgmii1_* signals) Switching Characteristics only support 10/100 Mbps operation. RGMII2 Switching Characteristics are not compatible with 1000 Mbps operation. Refer to the device Data Manual for Switching Characteristics timing details.

See in TDA2x Errata document: Ethernet RGMII2 limited to 10/100 Mbps; Errata ID: i880

The proposed workaround is: RGMII2 (rgmii1_* signals) should be used at 10/100 Mbps operation only. If 1000 Mbps operation is required, RGMII1 (rgmii0_* signals) can be used instead.

Best regards,
Yanko

0 Yanko Todorov-XID over 8 years ago in reply to Yanko Todorov-XID

TI__Mastermind 29520 points

Hello Benedikt,

Please see the patch in Uboot - lists.denx.de/.../158269.html

Best regards,
Yanko

Processors

Processors forum

TDA2x 100Mbit Ethernet