CY7C65620 Cypress Semiconductor Corporation., CY7C65620 Datasheet - Page 9

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

Table 3. Pin Assignments
Default Descriptors
This section presents the different descriptors that are available. There is a table for each that lists the functionality of each descriptor.
Device Descriptor
The standard device descriptor for CY7C656xx 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 CY7C656xx enumerates with the default descriptor
values as shown below. 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 #: 38-08037 Rev. *J
Notes
4. Configured speed descriptor.
5. Other speed descriptor.
12, 13
10,11
Byte
Byte
2,3
8,9
Pin
14
15
16
17
51
52
0
1
4
5
6
7
0
1
2
4
5
6
7
8
0x02
Full-Speed
Full-Speed
CY7C65630
0x04B4
0x6560
0x0915
0x0019
0x0110
PWR#[4]
OVR#[4]
0xA0
0xE0
0x12
0x01
0x09
0x00
0x00
0x40
0x00
0x00
0x00
0x01
0x09
0x01
0x01
0x00
0x28
[4]
Name
/0x07
[5]
[3]
(continued)
0x02
High-Speed
High-Speed
CY7C65620
Reserved
0x04B4
0x0200
0x6560
0x0915
0x0019
0x57
Name
0x12
0x01
0x09
0x00
0x01
0x40
0x00
0x00
0x00
0x01
0xA0
0xE0
0x09
[4]
0x01
0x01
0x00
NC
/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
Type Default
Input
O/Z
Field Name
Field Name
1
Z
Overcurrent Condition Detection Input. Default is Active
LOW. Polarity is controlled through EEPROM.
Reserved. Pull to deasserted state with external resistor
(CY7C65620 only)
Power Switch Driver Output. Default is Active LOW. Polarity
is controlled through EEPROM.
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
Description
Description
Description
CY7C656xx
Page 9 of 25
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