CY7C65620 Cypress Semiconductor Corporation., CY7C65620 Datasheet - Page 13

• Manufacturer Part Number: CY7C65620
• Description: Low-power Usb 2.0 Hub Controller Family
• Manufacturer: Cypress Semiconductor Corporation.

Byte 12 : IllegalHubDescriptor, CompoundDevice,
Full-speedOnly, NoPortIndicators, Reserved,
GangPowered, SingleTTOnly
0xD4 Load
Document #: 38-08037 Rev. *J
Byte
Bit 7: IllegalHubDescriptor. For GetHubDescriptor request,
some USB hosts use a DescriptorTypeof 0x00 instead of
HUB_DESCRIPTOR, 0x29. According to the USB 2.0 stan-
dard, a hub must treat this as a Request Error, and STALL the
transaction accordingly (USB 2.0, 11.24.2.5). For systems
that do not accept this, the IllegalHubDescriptor configuration
bit may be set to allow CY7C656xx to accept a Descriptor-
Type of 0x00 for this command. Default is 1.
Bit 6: CompoundDevice. Indicates whether the hub is part of
a compound device. This is reported in the HubDescriptor,
wHub-Characteristics: b2. Default set to ’0’.
Bit 5: Fullspeed. Only configures the hub to be a full-speed
only device. Default is set to ’0’.
Bit 4: NoPortIndicators. Turns off the port indicators and does
not report them as present in the HubDescriptor, wHubChar-
acteristics b7 field. Default is set to ’0’.
Bit 3: Reserved. Set this bit to ’0’.
Bit 2: GangPowered. Indicates whether the port power
switching is ganged (set to 1) or per-port (set to ’0’). This is
reported in the HubDescriptor, wHubCharacteristics field, b4,
b3, b1, and b0. Default is set to ’0’.
Bit 1: Reserved. Default is set to ’0’.
Bit 0: Reserved. Default is set to ’0’.
10
11
12
13
14
15
16
0
1
2
3
4
5
6
7
8
9
0xD4
VID (LSB)
VID (MSB)
PID (LSB)
PID (MSB)
reserved
DID (MSB)
EnabledOverCurrentTimer[3:0],
DisableOvercurrentTimer[3:0]
MaxPower (Full-speed)
MaxPower (High-speed)
Reserved
Reserved
HubControllerPower Full-Speed Bus
Powered
HubControllerPower High-Speed Bus
Powered
HubControllerPower Full-Speed Self
Powered
HubControllerPower High-Speed Self
Powered
PowerOnTimer
Value (MSB->LSB)
Fusable
Factory
X
X
X
X
X
X
X
X
X
Byte 0: 0xD4
Byte 1: VID (LSB)
Byte 2: VID (MSB)
Byte 3: PID (LSB)
Byte 4: PID (MSB)
Byte 5: Reserved
Byte 6: DID (MSB)
N:NumLangs
=24+2N
h=g+2N Strings
=a+2N
=b+2N
=c+2N
=d+2N
=e+2N
=f+2N
Byte
Needs to be programmed with 0xD4
Least Significant Byte of Vendor ID
Most Significant Byte of Vendor ID
Least Significant Byte of Product ID
Most Significant Byte of Product ID
Reserved.
Most Significant Byte of Device ID
17
18
19
20
21
22
23
24
a
b
c
d
e
g
f
IllegalHubDescriptor, Compound-
Device, FullspeedOnly, NoPortIndi-
cators, Reserved, GangPowered,
SingleTTOnly, Reserved
AmberPolarity, GreenPolarity,
ModulateIndicators, PowerControlPo-
larity, OverCurrentPolarity,
OverCurrentMode1,
OverCurrentMode2
Write Protect
NumLangs
SupportedStrings
ActivePorts[3:0]
RemovablePorts[3:0]
LangID
iManufacturer
iProduct
iSerialNumber
iConfiguration(FS)
iConfiguration(HS)
iInterface(0)
reserved
Value (MSB->LSB)
CY7C656xx
Page 13 of 25
Fusable
Factory
X
X
X
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