CY7C65640-LFC Cypress Semiconductor Corp, CY7C65640-LFC Datasheet - Page 13

• Manufacturer Part Number: CY7C65640-LFC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C65640-LFC

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

7.0
7.1
The standard device descriptor for TetraHub is based on the VID, PID, and DID found in the SPI EEPROM. This VID/PID/DID in
the EEPROM will overwrite the default VID/PID/DID. If no EEPROM is used, the TetraHub will enumerate with the default
descriptor values as shown below.
7.2
7.3
Notes:
Document #: 38-08019 Rev. *E
1.
2.
12, 13
10,11
Byte
Byte
Byte
2,3
8,9
14
15
16
17
This value is reported as 0x19 if the hub is configured in Single-TT mode.
This value is configured through the External EEPROM.
0
1
2
4
5
6
7
8
0
1
2
3
4
5
6
7
8
0
1
4
5
6
7
Device Descriptor
Configuration Descriptor
Interface Descriptor
Default Descriptors
Full Speed
Full Speed
Full Speed
0x0019
0x04B4
0x0200
0x6560
0x0007
0xE0
0x09
0x02
0x01
0x01
0x00
0x32
0x09
0x04
0x00
0x00
0x01
0x09
0x00
0x00
0x00
0x12
0x01
0x09
0x00
0x00
0x40
0x00
0x00
0x00
0x01
High Speed
High Speed
High Speed
0x0029
0xx04B4
0x32
0x0200
0x6560
0x0007
0xE0
0x09
0x02
0x01
0x01
0x00
0x09
0x04
0x00
0x00
0x01
0x09
0x00
0x01
0x00
0x12
0x01
0x09
0x00
0x02
0x40
0x00
0x00
0x00
0x01
[2]
[1]
bLength
bDescriptorType
wTotalLength
bNumInterfaces
bConfigurationValue
iConfiguration
bmAttributes
bMaxPower
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
bLength
bDescriptorType
bcdUSB
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
wIdVendor
wIdProduct
wbcdDevice
iManufacturer
iProduct
iSerialNumber
bNumConfigurations
Field Name
Field Name
Field Name
18 Bytes
DEVICE_DESCRIPTOR
USB specification 2.0
HUB
None
None
64 bytes
VID (overwritten by what is defined in EEPROM)
PID (overwritten by what is defined in EEPROM)
DID (overwritten by what is defined in EEPROM)
No manufacturer string supported
No product string supported
No serial string supported
One configuration supported
9 Bytes
CONFIG_DESCRIPTOR
Length of all other descriptors
1
The configuration to be used
9 Bytes
INTERFACE_DESCRIPTOR
Description
Description
Description
CY7C65640
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