PS4cam-USB

USB

Device Descriptor

Device Descriptor
Offset	Field	Size	Value	Description
0	bLength	1	0x12	Size of this descriptor in bytes (18)
1	bDescriptorType	1	0x01	DEVICE descriptor type (Constant = 1)
2	bcdUSB	2	0x0300	USB Spec release number (3.00): with which the device and is descriptors are compliant (e.g.: 0x0200 (USB2.0), 0x0300, (USB3.0))
4	bDeviceClass	1	0x00	Class code assigned by USB-IF (used by the operating system to find a class driver for your device) 00h means each interface defines its own class (identify itself at the interface level: bInterfaceClass ) FFh means vendor-defined class Any other value must be a class code
5	bDeviceSubClass	1	0x00	SubClass Code assigned by USB-IF (used by the operating system to find a class driver for your device)
6	bDeviceProtocol	1	0x00	Protocol Code assigned by USB-IF (used by the operating system to find a class driver for your device)
7	bMaxPacketSize0	1	0x09	Max packet size for endpoint 0. Must be 8, 16, 32 or 64 Must be 9 according to Compliance Test Specification for the USB 3.0 Architecture p29 9.1
8	idVendor	2	0x05a9	Vendor ID (VID) (OmniVision Technologies, Inc.) - must be obtained from USB-IF (used by the operating system to find a driver for your device)
10	idProduct	2	0x0580	Product ID (PID) - assigned by the manufacturer (used by the operating system to find a driver for your device)
12	bcdDevice	2	0x0100	Device release number (Version: 1.00) in binary coded decimal
14	iManufacturer	1	0x01	Index of string descriptor describing manufacturer set to 0 if no string
15	iProduct	1	0x02	Index of string descriptor describing product set to 0 if no string
16	iSerialNumber	1	0x00	Index of string descriptor describing device serial number set to 0 if no string
17	bNumConfigurations	1	0x01	Number of possible configurations

Configuration Descriptor

Configuration Descriptor
Offset	Field	Size	Value	Description
0	bLength	1	0x09	Size
1	bDescriptorType	1	0x02	(= 2)
2	wTotalLength	2	0x002C	Total number of bytes (44) in this descriptor and all the following descriptors (9+9+ + +)
4	bNumInterfaces	1	0x01	Number of interfaces supported by this configuration
5	bConfigurationValue	1	0x01	Value used by Set Configuration to select this configuration
6	iConfiguration	1	0x00	Index of string descriptor describing configuration - set to 0 if no string
7	bmAttributes	1	0x80	Powered by the bus (10000000) specify power parameters for the configuration : 8-digit bit binary … 7|6|5|4|3|2|1|0 … D0 - D4: Reserved. D5: The configuration supports remote wakeup. D6: The configuration is self-powered and does not use power from the bus. D7: The configuration is powered by the bus.
8	bMaxPower	1	0x32	Maximum current: 100mA drawn by device in this configuration. In units of 2mA. So 0x32 (50) means 100 mA
Interface Descriptor
0	bLength	1	0x09	Size
1	bDescriptorType	1	0x04	(= 4)
2	bInterfaceNumber	1	0x00	Number identifying this interface. Zero-based value
3	bAlternateSetting	1	0x00	The first (and default) value used to select alternative setting is always 0 (An interface can have more than one variant, and these variants can be switched between, while other interfaces are still in operation)
4	bNumEndpoints	1	0x02	Number of Endpoints used for this interface
5	bInterfaceClass	1	0xFF	Class code assigned by USB-IF 00h is a reserved value FFh means vendor-defined class Any other value must be a class code
6	bInterfaceSubClass	1	0x00	SubClass Code assigned by USB-IF
7	bInterfaceProtocol	1	0x00	Protocol Code assigned by USB-IF
8	iInterface	1	0x00	Index of string descriptor describing interface - set to 0 if no string
Endpoint (OUT) Descriptor
0	bLength	1	0x0-	Size
1	bDescriptorType	1	0x05	(= 5)
2	bEndpointAddress	1	0x01	OUT<--(0 000 0001)-->1 The address of this endpoint within the device: D3-D0: Endpoint number D6-D4: Reserved. set to Zero D7: Direction: 0 = OUT, 1 = IN (Ignored for Control Endpoints)
3	bmAttributes	1	0x02	Bulk (00000010) (D1:0) Transfer Type: 00 = Control 01 = Isochronous 10 = Bulk 11 = Interrupt The following only apply to isochronous endpoints. Else set to 0. (D3:2) Synchronisation Type (ISO mode): 00 = No Synchronisation 01 = Asynchronous 10 = Adaptive 11 = Synchronous (D5:4) Usage Type (ISO mode): 00 = Data endpoint 01 = Feedback endpoint 10 = Implicit feedback Data endpoint 11 = Reserved (D7:6) Reserved Set to 0
4	wMaxPacketSize	2	0x0400	(1024)
6	bInterval	1	0x00	- (unit depends on device speed) Interval for polling endpoint for data transfers. Expressed in frames (ms) for low/full speed or microframes (125µs) for high speed (ignored for Bulk & Control Endpoints. Isochronous must equal 1 and field may range from 1 to 255 for interrupt endpoints)
-	bMaxBurst	1	0x0F	MaxBurst (15) The number of packets the endpoint can send or receive as part of a burst (range 1 - 16). See transfer Type.
Endpoint (IN) Descriptor
0	bLength	1	0x0-	Size
1	bDescriptorType	1	0x05	( =5)
2	bEndpointAddress	1	0x82	IN<--(1 000 0010)-->2
3	bmAttributes	1	0x02	Bulk
4	wMaxPacketSize	2	0x0400	(1024)
6	bInterval	1	0x00	0
-	bMaxBurst	1	0x0F	MaxBurst (15)
Binary Object Store Descriptor
0	bLength	1	0x05	Size (05)
1	bDescriptorType	1	0x0F	(= 15)
2	wTotalLength	1	0x16	(22) (5+7+10)
3	bNumDeviceCaps	1	0x02	(2) must be at least 2 for SuperSpeed devices and equal to 3 for USB 3.0 hubs.
-	USB 2.0 Extension Device Capability:
	bLength	1	0x07	(7) Size
	bDescriptorType	1	0x10	( =16)
	bDevCapabilityType	1	0x02	(2) 02 (USB 2.0 EXTENSION) or 03 (SUPERSPEED_USB) or 04 (CONTAINER_ID)
	bmAttributes	4	0x00000002	(00000000 00000000 00000000 00000010) Link Power Management supported See USB2-LPM-Errata-final.pdf p3 D0 Reserved. Must be set to zero D1 A value of one in this bit location indicates that this device supports the Link Power Management (LPM) protocol D2 BESL & Alternate HIRD definitions supported. The LPM bit must be set to a one when this bit is a one D3 Recommended Baseline BESL valid D4 Recommended Deep BESL valid D11:8 Recommended Baseline BESL value. Field shall be ignored by system software if bit [3] is a zero. D15:12 Recommended Deep BESL value. Field shall be ignored by system software if bit is a zero. D31:16 Reserved. Must be set to zero.
-	SuperSpeed USB Device Capability:
	bLength	1	0x0A	(10) Size
	bDescriptorType	1	0x10	(= 16)
	bDevCapabilityType	1	0x03	(3)
	bmAttributes	1	0x00	(00000000) D1 is 1 if it is a LTM capable device
	wSpeedsSupported		0x000e	Device can operate at Full Speed (12Mbps) Device can operate at High Speed (480Mbps) Device can operate at SuperSpeed (5Gbps)
	bFunctionalitySupport			Lowest fully-functional device speed is Full Speed 12Mbps)
	bU1DevExitLat			10µ
	bU2DevExitLat			32µs
	Device Status		0x0000