Hi,
Our customer has an issue.
I explained to my customer that USB role can change by uisng iddig bit of USBx Mode Register. And its bit overdrives ID pin. But according to my customer analysis, iddig bit of USBx Mode register remains set after USB memory is connected to AM3874 normally.
Customer said iddig bit always is set after initialization. BDEVICE bit of DEVCTL register is read only bit. And it shows AM3874 roles as BDEVICE. But customer said, iddig bit remains to be set (this means 3874 becomes to be Bdevice) when USB memory connection. The connection is succeeded normally. And BDEVICE bit is cleared (this means 3874 is in A Device). But iddig bit is set!
I don't know why 3874 does not become to be BDEVICE even though iddig bit is set.
Could someone give me some advice regarding USB module h/w ?
Also this question is continued from my question in the below e2e forum. Please refer it.
http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/p/240393/842290.aspx#842290
I appreciate quick reply.
Best regards, Michi
