DC_ENDPIDX
[DC_ENDPIDX] = REG_FIELD(ISP176x_DC_EPINDEX, 1, 4),
[DC_ENDPIDX] = REG_FIELD(ISP1763_DC_EPINDEX, 1, 4),
isp1760_udc_write(udc, DC_ENDPIDX, ep->addr & USB_ENDPOINT_NUMBER_MASK);
isp1760_udc_write(udc, DC_ENDPIDX, 1);
isp1760_udc_write(udc, DC_ENDPIDX, 1);