CY7C65620-56LFXAT Cypress Semiconductor Corp, CY7C65620-56LFXAT Datasheet - Page 13

• Manufacturer Part Number: CY7C65620-56LFXAT
• Description: CY7C65620-56LFXAT
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C65620-56LFXAT

• Lead Free Status / Rohs Status: Compliant

Hub Descriptor
Document Number: 38-08037 Rev. *T
Note
Byte
6. This value is configured through the external EEPROM.
3,4
0
1
2
5
6
7
8
All Speed
0x0089
0xAE
0xFF
0x04
0x32
0x28
0x00
0x09
0x29
0x02
[6]
[6]
[6]
[6]
[6]
[6]
[6]
bLength
bDescriptorType
bNbrPorts
wHubCharacteristics
bPwrOn2PwrGood
bHubContrCurrent
bDeviceRemovable
bPortPwrCtrlMask
Field Name
9 bytes
HUB descriptor
Number of ports supported, CY7C65630
Number of ports supported, CY7C65620
b1, b0: Logical power switching mode
b2: Identifies a compound device
b4, b3: Overcurrent protection mode
b6, b5: TT think time
b7: Port indicators supported,
b15, b8: Reserved
Time from when the port is powered to when the power is good on that port.
Maximum current requirement for the hub controller at full speed.
Maximum current requirement for the hub controller at high speed.
Indicates if the logical port has a removable device attached (0 = removable,
1 = non removable).
Required for compatibility with software written for 1.0 compliant devices.
00: Ganged power switching (all ports’ power at once).
01: Individual port power switching (Default in CY7C65620/CY7C65630).
0: Hub is not part of a compound device (Default in CY7C65620/CY7C65630).
1: Hub is part of a compound device.
00: Global overcurrent protection. The hub reports overcurrent as a
summation of all ports’ current draw, without a breakdown of individual port
overcurrent status.
01: Individual port overcurrent protection. The hub reports overcurrent on a
per-port basis. Each port has an overcurrent status (Default in
CY7C65620/CY7C65630).
1X: No overcurrent protection. This option is allowed only for bus powered
hubs that do not implement overcurrent protection.
00: TT requires at most eight FS bit times of inter transaction gap on a full/low-
speed downstream bus (Default in CY7C65620/CY7C65630).
0: Port indicators are not supported on its downstream facing ports and the
SetPortIndicator request has no effect.
1: Port indicators are supported on its downstream facing ports and the
SetPortIndicator request controls the indicators. See
Supported USB
Requests. (Default in CY7C65620/CY7C65630).
Description
CY7C65620/CY7C65630
Functional Overview
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