
W9968CF
Publication Release Date: May 1999
- 33 - Revision A2
0
bLength
1
0x07
Size of this descriptor in bytes
1
bDescriptorType
1
0x05
Endpoint Descriptor Type
2
bEndpointAddress
1
0x81
Endpoint number. Direction is set to IN.
3
bmAttributes
1
0x01
sochronous transfer type
4
wMaxPacketSize
2
Note 1
Maximum packet size of this alternate setting
6
bInterval
1
0x01
nterval in milliseconds for polling endpoint for
data transfers
Note 1. Refer to Table 7.11.
Table 7.11 shows
bAlternateSetting
fields and
wMaxPacketSize
fields for these alternate settings.
Table 7.11 The Maximum Data Payload Size in Bytes for Alternate Settings
Alternate Setting
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
bAlternateSetting
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
wMaxPacketSize
1023 959
895
831
767 703 639 575 511 447 383 319 255 191 127 63
7.4.3.3 String Descriptors
The W9968CF includes strings describing the manufacturer and product as shown in Table 7.12.
Table 7.12 W9968CF Default Stream Descriptors
Offset
Field
Size
Value
Description
0
bLength
1
0x04
Length of String descriptor in bytes
1
bDescriptorType
1
0x03
String Descriptor Type
2
bString
2
0x0409
Array of two-byte LangID codes (English
American)
4
bLength
1
0x10
Length of String descriptor in bytes
5
bDescriptorType
1
0x03
String Descriptor Type
6
bString
14
WINBOND
Manufacturer
20
bLength
1
0x10
Length of String descriptor in bytes
21
bDescriptorType
1
0x03
String Descriptor Type
22
bString
14
W9968CF
Product