USB3803 Datasheet, PDF (56/99 Pages) Microchip Technology – USB 2.0 High-Speed Hub Controller Optimized

USB3803
TABLE 7-15: DEVICE DESCRIPTOR (CONTINUED)
Offset
14
15
16
17
Field
Manufacturer
Product
SerialNumber
NumConfigurations
Size
1
1
1
1
Value
xxh
yyh
zzh
01h
Description
If STRING_EN =0 Optional string is not supported, and
xx = 00.
If STRING_EN = 1, String support is enabled, and
xx = 01
If STRING_EN =0 Optional string is not supported, and
yy = 00.
If STRING_EN = 1, String support is enabled, and
yy = 02
If STRING_EN =0 Optional string is not supported, and
zz = 00.
If STRING_EN = 1, String support is enabled, and
zz = 03
Supports 1 configuration.
7.4.2 DEVICE QUALIFIER DESCRIPTOR
The following table provides device qualifier values for Full-Speed operation.
TABLE 7-16: DEVICE QUALIFIER (FULL-SPEED)
Offset
0
1
2
4
5
6
7
8
9
Field
Length
DescriptorType
USB
DeviceClass
DeviceSubClass
DeviceProtocol
MaxPacketSize0
NumConfigurations
Reserved
Size
1
1
2
1
1
1
1
1
1
Value
0Ah
06h
0200h
09h
00h
00h
40h
01h
00h
Description
Size of this Descriptor.
Device Descriptor Type.
USB Specification Release Number.
Class code assigned by USB-IF for Hubs.
Class code assigned by USB-IF for Hubs.
Protocol code.
64-byte packet size for the other speed.
Supports 1 other speed configuration.
Reserved.
7.4.3 CONFIGURATION DESCRIPTOR
The following table provides configuration descriptor values for High-Speed, Single-TT-Only operation.
TABLE 7-17: CONFIGURATION DESCRIPTOR (HIGH-SPEED, SINGLE-TT ONLY)
Offset
0
1
Field
Length
DescriptorType
Size
1
1
Value
09h
02h
Description
Size of this Descriptor.
Configuration Descriptor Type.
DS00001691B-page 56
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