μ
PD720210
4. USB Descriptor Information
R19UH0093EJ0200 Rev.2.00
Page 27 of 59
May 26, 2014
4.2.10 Class Specified Hub Class Descriptor
Table 4-23. Class Specified Hub Class Descriptor
Field Name
Size
Value
Description
bDescLength
1
09h
Descriptor Length(9 bytes)
bDescriptorType 1 29h
Hub
Class
bNbrPorts
1
04h
4 downstream facing ports(Note 1)
wHubCHaracteristics 2
00A9h
01b(D1:D0)
Individual port power switching(Note 1)
0b(D2)
Not compound device(Note 2)
01b(D4:D3)
Individual overcurrent protection(Note 1)
01b(D6:D5)
00b(D6:D5)
TT Think Time is 16 FS bit time(Note 3)
1b(D7)
0b(D7)
Support Port Indicator
bPwrOn2PwrGood 1 32h
00h
100ms
0ms(Note 1)
bHubContrCurrent
1
64h
Hub Control Current
DeviceRemovable
1
00h
All downstream port is removable(Note 1)
PortPwrCtrlMask 1 FFh
Note 1:
The value can be overridden by ROM setting or Strap Pin setting
Note 2:
When one or more available port(s) is non-removable, the value is set to 1b
Note 3:
Bit[7:5] = 000b, when FS_ONLY_MODE = 1b
Summary of Contents for Renesas mPD720210
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