Part Number:TMDSEVM3730
Hi, Sirs,
I have some questions about technical issue of USB transceiver on the TMDSEVM3730 board.
On the board schematic, USB_OTG have two ways connection to the PMIC and CPU
First way is USB_OTG data is going through using USB transceiver(Part No.=ISP1507BBS) to PMIC and CPU
Sencond way is USB_OTG data is just going through straight using connector(Part No=CON_PMC_30X2_M) to PMIC and CPU, but this way is disconnected in default
So what I did;
1. In the first way, I disconnected line of VBUS of USB transceiver(Part No.=ISP1507BBS) not to use part this USB transceiver any more.
2. In the sencond way, I put with all 0 ohm resistors(R214 ~ R225) on the connector(CON_PMC_30X2_M) to jump from USB_OTG through P15 to PMIC and CPU.
However, these works don't make to USB_OTG works. For debugging, I only can see the HSUSB clock wave, but there are nothing on any datas on HSUSB_DATA0 ~DATA7.
What should I see more detail to connect USB_OTG without using U36-ISP1507BBS part?