USB

USBH_PWR1	Pull-up to 3.3 volts to enable USB port
USBH_PEN1
USBH_P1	USB port	USB D+
USBH_N1		USB D-
V_BATT		USB VBUS
GND		USB DGND

The 24-pin flex ribbon connector has USB port 1 on it. The pinouts you need are:

• V_BATT (pin 24) - USB power
• USBH_N1 (pin 18) - USB D-
• USBH_P1 (pin 17) - USB D+
• GND (pin 8) - USB Ground

In addition, you need to pull USBH_PWR1 (pin 20) up to 3.3 volts to enable the port. You need to provide a stable 3.3 volt supply, which is fairly simple to do by adding a small SOT23 package voltage regulator (like the LM3480), with the power input coming from V_BATT (pin 24) and the output going to USBH_PWR1 (pin 20).