VV0670P001 View Datasheet(PDF) - Vision
Part Name
Description
MFG CO.
'VV0670P001' PDF : 36 Pages View PDF
Colour Processor Interface ASIC
Descriptor Field
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
Size
(bytes)
Value
1
0x09
1
0x04
1
0x01
1
0x03
1
0x01
1
0xFF
1
0x00
1
0xFF
1
0x00 (1)
Description
Size of this descriptor in bytes.
INTERFACE Descriptor Type.
Number of interface.
Value used to select alternate setting for the interface
identified in the prior field.
Number of endpoints used by this interface (excluding
Endpoint 0).
Class code (assigned by USB). A value of 0xFF means
that the interface class is vendor specific.
Subclass code (assigned by USB).
Protocol code (assigned by USB). A value of 0xFF
means that the device uses a vendor specific protocol
for this interface.
Index of string descriptor describing this interface.
Descriptor Field
bLength
bDescriptorType
bEndpointAddress
bmAttributes
wMaxPacketSize
bInterval
Size
(bytes)
Value
1
0x07
1
0x05
1
0x81
1
0x01
2
0x03C0/
0x0380 (2)
1
0x01
Description
Size of this descriptor in bytes.
ENDPOINT Descriptor Type.
The address of the endpoint on the USB device
described by this descriptor: (IN endpoint, number 1)
Field describing the endpoint’s attributes: Isochronous
transfer type.
Maximum packet size this endpoint is capable of send-
ing: 960 bytes or 896 bytes (2).
Interval for polling endpoint for data transfers (in ms).
For isochronous endpoints this field must be set to 1
(ie. every USB frame).
Notes:
(1) The USB camera does not support String Descriptors. Any request by the host for a STRING descriptor
will cause the camera to STALL the default pipe.
(2) The first number shows maximum packet size values returned when USB_BANDWIDTH is left
unconnected (internally pulled up), as is the case in normal operation. If USB_BANDWIDTH is pulled LO
externally the second number is returned as the maximum packet size for the isochronous endpoint. For
further information see section 2.2.4.4.
On successful completion of these control transfers the host has gathered all relevant information about the
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