TUSB2036: TUSB2036 not detecting

Hello Satheesh,

Can you share a schematic?  Or if you cannot post on the forum, accept my friend request and send it directly to me.

Thanks,

JMMN

Hello JMMN,

Thanks for your response,I could not able to share the schematic but we followed as per datasheet recommendation

Thanks,

S.Satheesh.

Hi,

Without a schematic or scope plots I cannot help debug the issue, can you provide any additional information?

Regards,

JMMN

Hi,

Please find the 48Mhz OSC output wave form.

Input setting:

NP3 pin - High

BUSPWR-High

Mode-High

PWRSW-high

EXTMEMDIS-High

What does the host report when the hub is connected?  What occurs on DP/DM?

Regards,

JMMN

1.Host nothing response.(while using ls comment not listed specific host device)

2.Upstream pins DP&DM continuously data coming.

Thanks,

S.Satheesh 

Do you have the 15K pulldowns installed on the downstream ports?

Regards,

JMMN

Not yet connected but any relation between hub detection and down stream pull down(I/O)?

Thanks,

S.Satheesh

What does the traffic on the upstream port look like?  What is reported by the host when the hub is connected.  Please send a screen shot or debug output.

Thanks,

JMMN