Editing Pinout


=== Multi-use port ===
<div style="float:right">[[File:PSVita - Multi-use port cable to USB.jpg|200px|thumb|left|PSVita - Multi-use port cable to USB]]<br />[[File:PSVita - Dock Multi-use connector to USB.jpg|200px|thumb|left|PSVita - Dock Multi-use connector to USB]]<br />[[File:PSVita - Multi-use port internals to USB.jpg|200px|thumb|left|PSVita - Multi-use port internals to USB]]</div>

{| class="wikitable"
! Pin || Signal
|-
| 1 || Another voltage input?
|-
| 2 || Another voltage input?
|-
| 3 || GND
|-
| 4 || Audio output
|-
| 5 || Audio output
|-
| 6 || UART RX (CPU/Syscon)
|-
| 7 || UART TX (CPU/Syscon)
|-
| 8 || UART CTS (CPU/Syscon)
|-
| 9 || UART RTS (CPU/Syscon)
|-
| 10 || ?
|-
| 11 || headset control GND
|-
| 12 || headset control data / mic
|-
| 13 || Unknown, connected to  Wolfson Micro WM1803E DAC
|-
| 14 || GND
|-
| 15 || Mode switch of ISL9110IRTAZ buck-boost switch. Logic input, high for auto PFM mode. Low for 
forced PWM operation (less noise, according to vendor).
|-
| 16 || GND
|-
| 17 || +5V charge input
|-
| 18 || +5V charge input
|-
| 19 || GND
|-
| 20 || USB D-
|-
| 21 || USB D+
|}

=== Accessory Port / EHCI ===
<gallery>
File:Accessory Port - mtrp1.png|Accessory Port - mstrp1
File:Accessory Port - mstrp2.png|Accessory Port - mstrp2
File:Accessory Port - mstrp3.png|Accessory Port - mstrp3
File:Accessory Port - mstrp4.png|Accessory Port - mstrp4
</gallery>


The accessory port found only on the original Vita models is a custom port USB interface.

It is commonly believed that code to enable the port was removed in 1.69 however
This is actually not true. 

Even on the latest firmware the accessory port can be enabled using 

    sceUsbServAccessoryActivate

and disabled with

    sceUsbServAccessoryDeactivate


The port is mostly compatible with drivers for the full sized USB Port on the PlayStation TV. Only difference being 3.3v power and logic levels, instead of 5v. 

==== Pinout ====
{| class="wikitable"
! Pin
! Name
! Description
|-
| 1
| GND
| Ground - On the side with the mounting hole that has threads
|-
| 2
| ID (1.8v)
| USB OTG
|-
| 3
| D-
| USB Data
|-
| 4
| D+
| USB Data
|-
| 5
| VBUS (3.3v)
| Power
|}

==== Offical usage ====
There are only a few documented uses for the accessory port on the PSVita.

===== FCC =====
[[File:Fccpdel1001.jpg|thumb|right]]
In the FCC filing for the PDEL-1001 development unit. It seems that some dongle attached to the device is used as part of their hardware testing framework.
===== Accessory to USB adapter =====
[[File:Accessory port adapter.jpg|thumb|right]]
An Accessory port to USB adapter board was sold on auction sites awhile ago. It comes from a PSVita factory in China that was being repurposed for other things. since production of the PSVita has stopped.

==== Unoffical usage ====
There have been some usage of the accessory port outside Sony

===== VitaShell =====
VitaShell can mount a USB Mass Storage device plugged into the accessory port. 
as seen in [https://youtube.com/watch?v=ImVMUpN9bDo&t=20m55s this video on youtube]

==== Simular Connectors ====
The sheilding on the port is simular to what is used on the Panasonic K1HA14AD0001 camera.

However. The pin layout on this is incorrect and will short the accessory port if plugged into a psvita.