CY7C65620-56LFXAT Cypress Semiconductor Corp, CY7C65620-56LFXAT Datasheet - Page 11

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

Specifications of CY7C65620-56LFXAT

• Lead Free Status / Rohs Status: Compliant

Default Descriptors
This section presents the different descriptors that are available. The following tables list the functionality of each descriptor.
Device Descriptor
The standard device descriptor for CY7C65620/CY7C65630 is based on the information found in the SPI EEPROM. The information
in the EEPROM overrides the default descriptor values. If no EEPROM is used, the CY7C65620/CY7C65630 enumerates with the
default descriptor values as shown in the following table. If a blank EEPROM is connected, the hub enumerates as vendor defined
class instead of a hub class. This is for the purpose of programming the EEPROM with the Cypress driver.
Configuration Descriptor
Document Number: 38-08037 Rev. *T
Notes
4. Configured speed descriptor.
5. Other speed descriptor.
12, 13
10,11
Byte
Byte
2,3
8,9
14
15
16
17
0
1
4
5
6
7
0
1
2
4
5
6
7
8
0x02
Full Speed
Full Speed
0x04B4
0x6560
0x0915
0x0019
0x0110
0xA0
0xE0
0x12
0x01
0x09
0x00
0x00
0x40
0x00
0x00
0x00
0x01
0x09
[4]
0x01
0x01
0x00
0x28
/0x07
[5]
0x02
High Speed
High Speed
0x0200
0x04B4
0x6560
0x0915
0x0019
0x57
0xA0
0xE0
0x12
0x01
0x09
0x00
0x01
0x40
0x00
0x00
0x00
0x01
0x09
0x01
0x01
0x00
[4]
/0x07
[4]
[5]
bLength
bDescriptorType
bcdUSB
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
wIdVendor
wIdProduct
wbcdDevice
iManufacturer
iProduct
iSerialNumber
bNumConfigurations
bLength
bDescriptorType
wTotalLength
bNumInterfaces
bConfigurationValue
iConfiguration
bmAttributes
bMaxPower
Field Name
Field Name
9 bytes
CONFIG_DESCRIPTOR
Length of all other descriptors
1
The configuration to use
Value depends on pin 45 - SELFPWR signal
SELFPWR = 0 yields 0xA0 and =1 yields 0xE0
18 bytes
DEVICE_DESCRIPTOR
USB specification 2.0 (1.1 if forced FS)
HUB
None
None
64 bytes
VID (overridden by what is defined in EEPROM)
PID (overridden by what is defined in EEPROM)
DID (overridden by what is defined in EEPROM)
Overridden by EEPROM
Overridden by EEPROM
Overridden by EEPROM
One configuration supported
CY7C65620/CY7C65630
Description
Description
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