W99681CF Datasheet, PDF (30/78 Pages) Winbond – JPEG USB Dual Mode Camera Chip

W99681CF
01000000B
SET_W99681CF_CONTROL (0) Data0³
Index¹
Length²
Data
Note 1. Index specifies the starting index of the control registers to be accessed. An index counter,
loaded with the Index value, will be incremented by one after every two bytes of data
transferred.
Note 2. Length specifies number of data bytes transferred during the second phase of the control
transfer. It should be an even number value. If this field is zero, there is no data transfer phase.
Note 3. Data0 is a word-sized data to be programmed into the control register indexed by the Index field,
no matter the Length field is zero or not. The internal index counter will be incremented by one
once Data0 is transferred.
Get W99681CF Control The W99681CF supports a Get W99681CF Control request for W99681CF
control registers IN transfer. Length field should be an even number value. The W99681CF returns
STALL for any unrecognized or unsupported Get W99681CF Control request.
Set W99681CF Control The W99681CF supports a Set W99681CF Control request for W99681CF
control registers OUT transfer. Length field should be an even number value. If the Length field is zero,
only Data0 is transferred with no data transfer phase. The W99681CF returns STALL for any
unrecognized or unsupported Set W99681CF Control request.
7.4.3 Descriptors
The W99681CF supports the standard USB descriptors as described below. The W99681CF returns
STALL if a request is received for any unrecognized or unsupported standard descriptor.
7.4.3.1 Device Descriptors
The W99681CF returns a Device Descriptor with the values shown in Table 7.5.
Table 7.5 W99681CF Device Descriptor
Offset Field
Size
0
bLength
1
1
bDescriptorType
1
2
bcdUSB
2
4
bDeviceClass
1
5
bDeviceSubClass
1
6
bDeviceProtocol
1
7
bMaxPacketSize0
1
8
idVendor
2
10 idProduct
2
12 bcdDevice
2
14 iManufacturer
1
15 iProduct
1
Value
0x12
0x01
0x0110
0x00
0x00
0x00
0x08
0x1046
0x9967
0x0110
0x01
0x02
Description
Size of this descriptor in bytes
Device Descriptor Type
USB Specification Release Number in BCD
Class code
Subclass code
Protocol code
Maximum packet size for endpoint zero
Vendor ID
Product ID
Device release number in BCD
Index of string descriptor describing
manufacturer
Index of string descriptor describing product
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