The programming module has two micro-USB connectors (call-outs 2 and 3 in Figure 1), one for each FT4232 USB to multi-protocol converter. Connect the external micro-USB cable from the host to the micro-USB connector 1 (call-out 2 in Figure 1). The micro-USB connector number 2 should be left unused (call-out 3 in Figure 1). The pin description of the micro-USB connector is listed in the following table.
| Pin Number | Signal Name | Functionality |
|---|---|---|
| 1 |
USB_VBUS
|
USB power |
| 2 |
USB_DN
|
USB differential data – |
| 3 |
USB_DP
|
USB differential data + |
| 4 |
USB_ID
|
USB ID |
| 5 |
GND
|
Ground |
| 6 |
GND
|
Shield ground |
| 7 |
GND
|
|
| 8 |
GND
|
|
| 9 |
GND
|
|
| 10 |
GND
|
|
| 11 |
GND
|