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Wifi

Xbox One

First revision of the Xbox One has both chipsets on the same PCB, a 8-pin connection goes from the PCB to the motherboard.

Communication is via 2x USB data-pairs. IMPORTANT: The board is operated via 3,3V, standard USB is 5V!

USB VID: 0x1286

  • Marvell Avastar 88W8897 (PID 0x2045)
  • Marvell Avastar 88W8782U (PID 0x2040)

Pinout

  • (A / CON3) U.FL - To RF Unit
  • (B / CON1) U.FL - NC
  • (C / CON2) U.FL - NC

  • JST 2x6 Pin connector (JST PHD 2X6P, 2.00mm)

JST Pinout

Pin Description Pin Description
1 3,3V 2 GND
3 USB2_ACC_DP 4 USB_ACC_DM
5 GND 6 GND
7 USB2_WIFI_DP 8 USB2_WIFI_DM
9 RESET_N 10 GND
11 3,3V 12 /

To use the module on a regular USB Port (On PC):

Requires 2x 1N4148 diodes per interface.

Safer alternative 5V->3,3V LDO

USB Host 5V --- 1N4148 | -- 1N4148 | -- 3,3V
USB Host D+ --- USB2_*_DP
USB Host D- --- USB2_*_DM
USB Host GND -- GND

Interfaces

USB2_ACC - Connectivity for accessories / game-controllers (1286:2040)

lsusb (verbose)

Bus 001 Device 070: ID 1286:2040 Marvell Semiconductor, Inc. Marvell Wireless Device
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1286 Marvell Semiconductor, Inc.
  idProduct          0x2040 Marvell Wireless Device
  bcdDevice           31.19
  iManufacturer           1 Marvell
  iProduct                2 Marvell Wireless Device
  iSerial                 3 0000000000000000
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x003c
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 Wireless LAN Configuration
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           6
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              5 Wireless LAN Interface
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

USB2_WIFI - Connectivity for WiFi (1286:2045)

lsusb (verbose)

Bus 001 Device 072: ID 1286:2045 Marvell Semiconductor, Inc. Marvell Wireless Device
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1286 Marvell Semiconductor, Inc.
  idProduct          0x2045 Marvell Wireless Device
  bcdDevice           40.00
  iManufacturer           1 Marvell
  iProduct                2 Marvell Wireless Device
  iSerial                 3 0000000000000000
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0020
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 Wireless LAN Configuration
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              5 Wireless LAN Interface
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

PCB

Xbox One (PHAT) Wifi module PCB PHAT front Wifi module PCB PHAT back Wifi module PCB PHAT decapped Wifi module cable PHAT front Wifi module cable PHAT front

Xbox One S

  • MediaTek MT7612UN

Pinout

Pin Description Description Pin
1 WIFI_PEX_SS_100M_CLKP WIFI_PEX_SS_100M_CLKN 2
3 GND PEX_WIFI_SOC_TP 4
5 PEX_WIFI_SOC_TN GND 6
7 PEX_SOC_WIFI_TP_C PEX_SOC_WIFI_TN_C 8
9 GND USB2_WIFI_DN 10
11 USB2_WIFI_DP GND 12
13 WIFI_WAKE_N WIFI_RESET_N 14
15 3,3V 3,3V 16

PCB

Xbox One S Wifi module PCB SLIM front Wifi module PCB SLIM back

Xbox One X

Unknown

PCB

Xbox One X (SCORPIO)

Security considerations

On the conference ZeroNights 2018 several vulnerabilities in the Marvell Avastar Wifi chip family (88W8787, 88W8797, 88W8801, 88W8897, and 88W8997) were presented. Click here for more info: Link

Credits

Authors: tuxuser