CY7C656xx
EZ-USB HX2LP™
Low Power USB 2.0 Hub Controller Family
Features
■
USB 2.0 Hub Controller
■
Automotive AEC Grade Option (–40°C to 85°C)
■
Compliant with the USB 2.0 Specification
■
USB-IF Certified: TID# 30000009
■
Windows Hardware Quality Lab (WHQL) Compliant
■
Up to Four Downstream Ports Supported
■
Supports Bus Powered and Self Powered Modes
■
Single Transaction Translator (TT)
■
Bus Power Configurations
■
Fit, Form, and Function Compatible with CY7C65640 and
CY7C65640A (TetraHub™)
■
Space Saving 56-pin QFN
■
Single Power Supply requirement
❐ Internal regulator for reduced cost
■
Integrated Upstream Pull Up Resistor
■
Integrated Pull Down Resistors for All Downstream Ports
■
Integrated Upstream and Downstream Termination Resistors
■
Integrated Port Status Indicator Control
■
24 MHz External Crystal (Integrated PLL)
■
In-system EEPROM Programming
■
Configurable with External SPI EEPROM:
❐ Vendor ID, Product ID, Device ID (VID/PID/DID)
❐ Number of active ports
❐ Number of removable ports
❐ Maximum power setting for high speed and full speed
❐ Hub controller power setting
❐ Power on timer
❐ Overcurrent detection mode
❐ Enabled and disabled overcurrent timer
❐ Overcurrent pin polarity
❐ Indicator pin polarity
❐ Compound device
❐ Enable full speed only
❐ Disable port indicators
❐ Ganged power switching
❐ Self and bus powered compatibility
❐ Fully configurable string descriptors for multiple language
support
Block Diagram CY7C65630
D+
D-
USB 2.0 PHY
24 MHz
Crystal
High-Speed
USB Control Logic
Serial
Interface
Engine
PLL
SPI_SCK
SPI_SD
SPI_CS
SPI Communication
Block
USB Upstream Port
Transaction Translator
Hub Repeater
TT RAM
Routing Logic
USB Downstream Port 1
USB 2.0
PHY
D+
Port Power
Control
Port
Status
USB Downstream Port 2
USB 2.0
PHY
D- PWR#[1]
LED D+
OVR#[1]
Cypress Semiconductor Corporation
Document Number: 38-08037 Rev. *M
•
Port Power
Control
D- PWR#[2]
Port
Status
OVR#[2]
198 Champion Court
LED
•
USB Downstream Port 4
USB Downstream Port 3
USB 2.0
PHY
D+
D-
Port Power
Control
Port
Status
USB 2.0
PHY
PWR#[3]
LED D+
OVR#[3]
D-
Port Power
Control
Port
Status
PWR#[4]
LED
OVR#[4]
San Jose, CA 95134-1709
•
408-943-2600
Revised June 12, 2009
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CY7C656xx
Block Diagram CY7C65620
D+
D-
USB 2.0 PHY
24 MHz
Crystal
High-Speed
USB Control Logic
Serial
Interface
Engine
PLL
SPI Communication
Block
USB Upstream Port
SPI_SCK
SPI_SD
SPI_CS
Transaction Translator (X1)
Hub Repeater
TT RAM
Routing Logic
USB Downstream Port 1
USB 2.0
PHY
D+
Port Power
Control
D- PWR#[1]
Document Number: 38-08037 Rev. *M
Port
Status
OVR#[1]
LED
USB Downstream Port 2
USB 2.0
PHY
D+
D-
Port Power
Control
Port
Status
PWR#[2]
LED
OVR#[2]
Page 2 of 25
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CY7C656xx
Introduction
EZ-USB HX2LP™ is Cypress’s next generation family of high
performance, low power USB 2.0 hub controllers. HX2LP is an
ultra low power single chip USB 2.0 hub controller with integrated
upstream and downstream transceivers, a USB Serial Interface
Engine (SIE), USB Hub Control and Repeater logic, and Transaction Translator (TT) logic. Cypress has also integrated many
of the external passive components, such as pull up and pull
down resistors, reducing the overall bill of materials required to
implement a hub design. The HX2LP portfolio consists of:
1. CY7C65630: 4-port/single transaction translator
This device option is for ultra low power applications that require
four downstream ports. All four ports share a single transaction
translator. The CY7C65630 is available in 56 QFN and is also
pin-for-pin compatible with the CY7C65640.
2. CY7C65620:
This device option is for a 2-port bus powered application. Both
ports share a single transaction translator. The CY7C65620 is
available in a 56 QFN.
All device options are supported by Cypress’s world class
reference design kits, which include board schematics, bill of
materials, Gerber files, Orcad files, and thorough design
documentation.
USB Serial Interface Engine
The Serial Interface Engine (SIE) allows the CY7C656xx to
communicate with the USB host. The SIE handles the following
USB activities independently of the Hub Control Block.
■
Bit stuffing/unstuffing
■
Checksum generation/checking
■
TOKEN type identification
■
Address checking.
Document Number: 38-08037 Rev. *M
Hub Repeater
The Hub Repeater manages the connectivity between upstream
and downstream facing ports that are operating at the same
speed. It supports full or low speed connectivity and high speed
connectivity. According to the USB 2.0 specification, the HUB
Repeater provides the following functions:
■
Sets up and tears down connectivity on packet boundaries
■
Ensures orderly entry into and out of the Suspend state,
including proper handling of remote wakeups.
Transaction Translator
The Transaction Translator translates data from one speed to
another. A TT takes high speed split transactions and translates
them to full or low speed transactions when the hub is operating
at high speed (the upstream port is connected to a high speed
host controller) and has full or low speed devices attached. The
operating speed of a device attached on a downstream facing
port determines whether the Routing Logic connects a port to the
TT or Hub Repeater. If a full or low speed device is connected to
the hub operating at high speed, the data transfer route includes
the TT. If a high speed device is connected to this high speed
hub, the route only includes the repeater and no TT, because the
device and the hub are operating at the same speed. When the
hub is operating at full speed (the upstream port is connected to
a full speed host controller), a high speed peripheral does not
operate at its full capability. These devices only work at full
speed. Full and low speed devices connected to this hub operate
at their normal speed.
Applications
Typical applications for the HX2LP device family are:
■
Standalone hubs
■
Motherboard hubs
■
Monitor hubs
■
Advanced port replicators
■
Docking stations
■
Split-PC designs
■
External personal storage drives
■
Keyboard hubs
Page 3 of 25
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CY7C656xx
Functional Overview
The Cypress CY7C656xx USB 2.0 Hubs are high performance,
low system cost solutions for USB. The CY7C656xx USB 2.0
Hubs integrate 1.5 kΩ upstream pull up resistors for full speed
operation and all downstream 15 kΩ pull down resistors and
series termination resistors on all upstream and downstream D+
and D– pins. This results in optimization of system costs by
providing built-in support for the USB 2.0 specification.
System Initialization
On power up, the CY7C656xx reads an external SPI EEPROM
for configuration information. At the most basic level, this
EEPROM has the Vendor ID (VID), Product ID (PID), and Device
ID (DID) for the customer's application. For more specialized
applications, other configuration options can be specified. See
Configuration Options on page 12 for more details.
After reading the EEPROM, if VBUSPOWER (connected to
up-stream VBUS) is high, CY7C656xx enables the pull up resistor
on D+ to indicate its presence to the upstream hub, after which
a USB Bus Reset is expected. During this reset, CY7C656xx
initiates a chirp to indicate that it is a high speed peripheral. In a
USB 2.0 system, the upstream hub responds with a chirp
sequence, and CY7C656xx is in a high speed mode, with the
upstream D+ pull up resistor turned off. In USB 1.x systems, no
such chirp sequence from the upstream hub is seen, and
CY7C656xx operates as a normal 1.x hub (operating at full
speed).
Enumeration
After a USB Bus Reset, CY7C656xx is in an unaddressed,
unconfigured state (configuration value set to ’0’). During the
enumeration process, the host sets the hub's address and
configuration.
After the hub is configured, the full hub functionality is available.
Downstream Ports
The CY7C656xx supports a maximum of four downstream ports,
each of which may be marked as usable or removable in the
extended configuration (0xD2 EEPROM load or 0xD4 EEPROM
load, see Configuration Options on page 12. Downstream D+
and D– pull down resistors are incorporated in CY7C656xx for
each port. Before the hubs are configured, the ports are driven
SE0 (Single Ended Zero, where both D+ and D– are driven low)
and are set to the unpowered state. When the hub is configured,
the ports are not driven and the host may power the ports by
sending a SetPortPower command for each port. After a port is
powered, any connect or disconnect event is detected by the
hub. Any change in the port state is reported by the hubs back
to the host through the Status Change Endpoint (endpoint 1). On
receipt of SetPortReset request for a port with a device
connected, the hub does as follows:
■
Performs a USB Reset on the corresponding port
■
Puts the port in an enabled state
■
Enables the green port indicator for that port (if not previously
overridden by the host)
■
Enables babble detection after the port is enabled.
Document Number: 38-08037 Rev. *M
Babble consists of a non idle condition on the port after EOF2. If
babble is detected on an enabled port, that port is disabled. A
ClearPortEnable request from the host also disables the
specified port.
Downstream ports can be individually suspended by the host
with the SetPortSuspend request. If the hub is not suspended, a
remote wakeup event on that port is reflected to the host through
a port change indication in the Hub Status Change Endpoint. If
the hub is suspended, a remote wakeup event on this port is
forwarded to the host. The host may resume the port by sending
a ClearPortSuspend command.
Upstream Port
The upstream port includes the transmitter and the receiver state
machine. The transmitter and receiver operate in high speed and
full speed depending on the current hub configuration.
The transmitter state machine monitors the upstream facing port
while the Hub Repeater has connectivity in the upstream
direction. This machine prevents babble and disconnect events
on the downstream facing ports of this hub from propagating and
causing the hub to be disabled or disconnected by the hub to
which it is attached.
Power Switching
The CY7C656xx includes interface signals for external port
power switches. Both ganged and individual (per-port) configurations are supported, with individual switching being the default.
Initially all ports are unpowered. After enumerating, the host may
power each port by sending a SetPortPower request for that port.
The power switching and overcurrent detection of downstream
ports is managed by control pins connected to an external power
switch device. PWR [n]# output pins of the CY7C656xx series
are connected to the respective external power switch's port
power enable signals. Note that each port power output pin of
the external power switch must be bypassed with an electrolytic
or tantalum capacitor as required by the USB specification.
These capacitors supply the inrush currents, which occur during
downstream device hot-attach events. The polarity of this pin is
configured through the EEPROM; see Configuration Options on
page 12.
Overcurrent Detection
Overcurrent detection includes 8 ms of timed filtering by default.
This parameter is configured from the external EEPROM in a
range of 0 ms to 15 ms for both enabled ports and disabled ports
individually. Detection of overcurrent on downstream ports is
managed by control pins connected to an external power switch
device.
The OVR[n]# pins of the CY7C656xx series are connected to the
respective external power switch's port overcurrent indication
(output) signals. After detecting an overcurrent condition, hub
reports overcurrent condition to the host and disables the PWR#
output to the external power device. The polarity of the OVR pins
can be configured through the EEPROM; see Configuration
Options on page 12.
Page 4 of 25
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CY7C656xx
Port Indicators
The USB 2.0 port indicators are also supported directly by
CY7C656xx. According to the specification, each downstream
port of the hub optionally supports a status indicator. The
presence of indicators for downstream facing ports is specified
by bit 7 of the wHubCharacteristics field of the hub class
descriptor. The default CY7C656xx descriptor specifies that port
indicators are supported (wHubCharacteristics, bit 7 is set). If
port indicators are not included in the hub, disable this bit through
EEPROM settings.
Each port indicator pin is strategically located directly on the
opposite edge of the port with which it is associated. A port
indicator provides two colors: green and amber. This is usually
implemented as two separate LEDs, one amber and the other
green. A combination of hardware and software control is used
to inform the user of the current status of the port or the device
attached to the port and to guide the user through problem
resolution. Colors and blinking provide information to the user.
The significance of the color of the LED depends on the operational mode of CY7C656xx. The CY7C656xx port indicators has
two modes of operation: automatic and manual.
On power up the CY7C656xx defaults to automatic mode, where
the color of the Port Indicator (green, amber, off) indicates the
functional status of the CY7C656xx port. In automatic mode, the
CY7C656xx turns on the green LED whenever the port is
enabled and the amber LED when an overcurrent condition is
detected. The color of the port indicator is set by the port state
machine. Blinking of the LEDs is not supported in automatic
mode. Table 1 identifies the mapping of color to port state in
automatic mode.
Table 1. Automatic Port State to Port Indicator Color Mapping
Downstream Facing Hub Port State
Powered Off
Off or Amber, if due to an
overcurrent condition
Disconnected, Disabled,
Not Configured, Resetting, Testing
Off
The LED control lines can also be modulated with a square wave
for power conservation. The polarity of these pins is programmable, see on page 13.
In manual mode, the indicators are under the control of the host,
which can turn on the LEDs, or leave them off. This is done by a
USB Hub class request. Blinking of the LEDs is supported in
manual mode. The port indicators enable the user to intervene
in any error detection. For example, when babble is detected
while plugging in a defective device, or when an overcurrent
condition occurs, the port indicators corresponding to the
downstream port blink green or only light the amber LED, respectively.
Enabled, Transmit, or
TransmitR
Green
Suspended, Resuming,
SendEOR, Restart_E/S
Off
Table 2 displays the color definition of the indicators when
CY7C656xx is in manual mode.[1]
Table 2. Port Indicator Color Definitions in Manual Mode
Color Definition
Off
Port State
Not operational
Amber
Error condition
Green
Fully operational
Blinking Off/Green
Software attention
Blinking Off/Amber
Hardware attention
Blinking Green/Amber
Reserved
Note
1. Information presented in Table 1 and Table 2 is from USB 2.0 specification Tables 11-6 and 11-7, respectively.
Document Number: 38-08037 Rev. *M
Page 5 of 25
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CY7C656xx
Pin Configuration
DD–[4]/NC
DD+[4]/NC
VCC
SPI_SCK
50
49
48
47
46
45
GREEN#[4]/NC
SPI_SD
51
AMBER#[4]/NC
GND
52
SELFPWR
OVR#[4]/Rsvd
53
RESET
PWR#[4]/NC
54
GND
OVR#[3]/Rsvd
55
PWR#[3]/NC
56
VCC
GND
Figure 1. 56-Pin Quad Flat Pack No Leads (8 mm x 8 mm)[2]
44
43
1
42 AMBER#[3]/NC
2
41 GREEN#[3]/NC
3
40
GND 4
GND
39 VCC
DD–[3]/NC
5
38 AMBER#[2]
DD+[3]/NC
6
37 GREEN#[2]
VCC
7
36 AMBER#[1]
GND
8
35 GREEN#[1]
DD–[2]
9
34 GND
DD+[2] 10
33 VCC
VCC 11
32 OVR#[2]
GND 12
31 PWR#[2]
DD–[1] 13
30 OVR#[1]
DD+[1] 14
20
21
22
23
24
25
VCC
GND
XIN
XOUT
VCC
GND
SPI_CS
26
27
28
GND
19
VCC
18
VBUSPOWER
17
D+
16
GND
VCC
15
D–
29 PWR#[1]
Note
2. NC and Rsvd are for CY7C65620 only.
Document Number: 38-08037 Rev. *M
Page 6 of 25
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CY7C656xx
Pin Description
Table 3. Pin Assignments[3]
Pin
CY7C65630
Name
CY7C65620
Name
3
7
11
15
19
23
27
33
39
55
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
VCC. This signal provides power to the chip.
4
8
12
16
20
24
28
34
40
47
50
56
21
22
46
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
XIN
XOUT
RESET#
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
XIN
XOUT
RESET#
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Input
Output
Input
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
45
SELFPWR
SELFPWR
Input
N/A
VBUSPOWER VBUSPOWER Input
N/A
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
24 MHz Crystal IN or External Clock Input.
24 MHz Crystal OUT. (NC if external clock is used)
Active LOW Reset. This pin resets the entire chip. It is normally tied to
VCC through a 100K resistor, and to GND through a 0.1 µF capacitor. No
other special power up procedure is required.
Self Power. Indicator for bus or self powered. 0 is bus powered, 1 is self
powered.
VBUS. Connect to the VBUS pin of the upstream connector. This signal
indicates to the hub that it is in a connected state, and may enable the
D+ pull up resistor to indicate a connection. (The hub does so after the
external EEPROM is read).
26
SPI Interface
25
SPI_CS
48
SPI_SCK
49
SPI_SD
Upstream Port
17
D–
18
D+
Type Default
Description
SPI_CS
SPI_SCK
SPI_SD
Output
Output
I/O/Z
O
O
Z
SPI Chip Select. Connect to CS pin of the EEPROM.
SPI Clock. Connect to EEPROM SCK pin.
SPI Dataline Connect to GND with 15 KΩ resistor and to the Data I/O
pin of the EEPROM.
D–
D+
I/O/Z
I/O/Z
Z
Z
Upstream D– Signal.
Upstream D+ Signal.
Note
3. Unused port DD+/DD– lines can be left floating. Leave the port power, amber, and green LED pins unconnected, and deassert the overcurrent pin. Do not leave the
overcurrent pin floating; it is an input.
Document Number: 38-08037 Rev. *M
Page 7 of 25
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CY7C656xx
Table 3. Pin Assignments[3] (continued)
CY7C65630
Name
Downstream Port 1
Pin
CY7C65620
Name
Type Default
13
14
36
DD–[1]
DD+[1]
AMBER#[1]
DD–[1]
DD+[1]
AMBER#[1]
I/O/Z
I/O/Z
Output
Z
Z
1
35
GREEN#[1]
GREEN#[1]
Output
1
30
OVR#[1]
OVR#[1]
Input
1
29
PWR#[1]
PWR#[1]
O/Z
Z
DD–[2]
DD+[2]
AMBER#[2]
I/O/Z
I/O/Z
Output
Z
Z
1
Downstream Port 2
9
DD–[2]
10
DD+[2]
38
AMBER#[2]
37
GREEN#[2]
GREEN#[2]
Output
1
32
OVR#[2]
OVR#[2]
Input
1
31
PWR#[2]
PWR#[2]
O/Z
Z
NC
NC
NC
I/O/Z
I/O/Z
Output
Z
Z
1
Downstream Port 3
5
DD–[3]
6
DD+[3]
42
AMBER#[3]
41
GREEN#[3]
NC
Output
1
53
OVR#[3]
Reserved
Input
1
54
PWR#[3]
NC
O/Z
Z
NC
NC
NC
I/O/Z
I/O/Z
Output
Z
Z
1
Downstream Port 4
1
DD–[4]
2
DD+[4]
44
AMBER#[4]
43
GREEN#[4]
NC
Output
1
51
OVR#[4]
Reserved
Input
1
52
PWR#[4]
NC
O/Z
Z
Document Number: 38-08037 Rev. *M
Description
Downstream D– Signal.
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
LED. Driver output for Green LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
Overcurrent Condition Detection Input. Default is Active LOW.
Polarity is controlled through EEPROM.
Power Switch Driver Output. Default is Active LOW. Polarity is
controlled through EEPROM.
Downstream D– Signal.
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
LED. Driver output for Green LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
Overcurrent Condition Detection Input. Default is Active LOW.
Polarity is controlled through EEPROM.
Power Switch Driver Output. Default is Active LOW. Polarity is
controlled through EEPROM.
Downstream D– Signal.
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
LED. Driver output for Green LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
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.
Downstream D– Signal.
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
LED. Driver output for Green LED. Port Indicator Support. Default is
Active LOW. Polarity is controlled through EEPROM.
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.
Page 8 of 25
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CY7C656xx
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 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 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.
Byte
Full Speed
High Speed
0
0x12
0x12
1
0x01
0x01
2,3
0x0110
0x0200
4
0x09
5
0x00
6
7
Field Name
Description
bLength
18 bytes
bDescriptorType
DEVICE_DESCRIPTOR
bcdUSB
USB specification 2.0 (1.1 if forced FS)
0x09
bDeviceClass
HUB
0x00
bDeviceSubClass
None
0x00
0x01
bDeviceProtocol
None
0x40
0x40
bMaxPacketSize0
64 bytes
8,9
0x04B4
0x04B4
wIdVendor
VID (overridden by what is defined in EEPROM)
10,11
0x6560
0x6560
wIdProduct
PID (overridden by what is defined in EEPROM)
12, 13
0x0915
0x0915
14
0x00
0x00
wbcdDevice
DID (overridden by what is defined in EEPROM)
iManufacturer
Overridden by EEPROM
15
0x00
0x00
iProduct
Overridden by EEPROM
16
0x00
0x00
iSerialNumber
Overridden by EEPROM
17
0x01
0x01
bNumConfigurations
One configuration supported
Configuration Descriptor
Byte
Full Speed
High Speed
0x09
Field Name
bLength
Description
0
0x09
1
0x02[4]/0x07[5]
2
0x0019
0x0019
wTotalLength
Length of all other descriptors
4
0x01
0x01
bNumInterfaces
1
5
0x01
0x01
bConfigurationValue
The configuration to use
6
0x00
0x00
iConfiguration
7
0xA0
0xE0
0xA0
0xE0
bmAttributes
8
0x28
0x57[4]
bMaxPower
0x02[4]/0x07[5] bDescriptorType
9 bytes
CONFIG_DESCRIPTOR
Value depends on pin 45 - SELFPWR signal
SELFPWR = 0 yields 0xA0 and =1 yields 0xE0
Notes
4. Configured speed descriptor.
5. Other speed descriptor.
Document Number: 38-08037 Rev. *M
Page 9 of 25
[+] Feedback
CY7C656xx
Interface Descriptor
Byte
Full Speed
High Speed
0
0x09
0x09
Field Name
1
0x04
2
0x00
3
0x00
0x00
bAlternateSetting
4
0x01
0x01
bNumEndpoints
5
0x09
0x09
bInterfaceClass
6
0x00
0x00
bInterfaceSubClass
7
0x00
0x00
bInterfaceProtocol
8
0x00
0x00
iInterface
Description
bLength
9 bytes
0x04
bDescriptorType
INTERFACE_DESCRIPTOR
0x00
bInterfaceNumber
Endpoint Descriptor
Byte
Full Speed
High Speed
Field Name
Description
0
0x07
0x07
bLength
7 bytes
1
0x05
0x05
bDescriptorType
ENDPOINT_DESCRIPTOR
2
0x81
0x81
bEndpointAddress
IN Endpoint #1
3
0x03
0x03
bmAttributes
Interrupt
4,5
0x0001
0x0001
6
0xFF
0x0C
wMaxPacketSize
Maximum packet size
bInterval
Polling rate
Device Qualifier Descriptor
Byte
Full Speed
High Speed
Field Name
0
0x0A
0x0A
bLength
10 bytes
1
0x06
0x06
bDescriptorType
DEVICE_QUALIFIER
2,3
0x0200
0x0200
4
0x09
0x09
5
0x00
0x00
bDeviceSubClass
6
0x01
0x00
bDeviceProtocol
bcdUSB
bDeviceClass
7
0x40
0x40
bMaxPacketSize0
8
0x01
0x01
bNumConfigurations
9
0x00
0x00
bReserved
Document Number: 38-08037 Rev. *M
Description
Page 10 of 25
[+] Feedback
CY7C656xx
Hub Descriptor
Byte
All Speed
Field Name
Description
0
0x09
bLength
9 bytes
1
0x29
bDescriptorType
HUB descriptor
2
0x04[6]
0x02
bNbrPorts
Number of ports supported, CY7C65630
Number of ports supported, CY7C65620
3,4
0x0089[6]
wHubCharacteristics
b1, b0: Logical Power Switching Mode
00: Ganged power switching (all ports’ power at once).
01: Individual port power switching (Default in CY7C656xx).
b2: Identifies a Compound Device
0: Hub is not part of a compound device (Default in CY7C656xx).
1: Hub is part of a compound device.
b4, b3: Overcurrent Protection Mode
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 CY7C656xx).
1X: No Overcurrent Protection. This option is allowed only for bus powered
hubs that do not implement overcurrent protection.
b6, b5: TT Think Time
00: TT requires at most eight FS bit times of inter transaction gap on a full-/low
speed downstream bus (Default in CY7C656xx).
b7: Port Indicators Supported,
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 Functional Overview and
Supported USB Requests. (Default in CY7C656xx).
b15,. b8: Reserved
5
0x32[6]
bPwrOn2PwrGood
Time from when the port is powered to when the power is good on that port.
6
0x28[6]
0xAE[6]
bHubContrCurrent
Maximum current requirement for the Hub Controller at full speed.
Maximum current requirement for the Hub Controller at high speed.
7
0x00[6]
bDeviceRemovable
Indicates if the logical port has a removable device attached (0 = removable,
1 = non removable).
8
0xFF[6]
bPortPwrCtrlMask
Required for compatibility with software written for 1.0 compliant devices.
Note
6. This value is configured through the external EEPROM.
Document Number: 38-08037 Rev. *M
Page 11 of 25
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CY7C656xx
Configuration Options
Byte 0: 0xD2
Systems using CY7C656xx have the option of using a fuse
ROM, which is preset at the factory to configure the hub.
Otherwise, it must have an external EEPROM for the device to
have a unique VID, PID, and DID. The CY7C656xx can communicate with SPI EEPROM that are either double byte addressed
or single byte with the ninth bit within the instruction byte, such
as the 24LC040 parts use. The 25LC080 EEPROM uses the
double byte address format. Therefore, the CY7C656xx can
communicate with these parts. The '010s and '020s use the
same command format that is used to interface with the ‘040 and
hence these can also be used to interface with the CY7C656xx.
If the attached EEPROM is blank (0xFF) the hub enumerates as
a vendor class device. In this configuration, the hub connects to
the Cypress driver to allow programming of the EEPROM. When
the EEPROM is programmed, a power cycle configures the chip
as a hub class device.
0xD0 Load
With this EEPROM format, only a unique VID, PID, and DID must
be present in the external SPI EEPROM. The contents of the
EEPROM must contain this information in the following format:
Byte
Value
0
0xD0
1
VID (LSB)
2
VID (MSB)
3
PID (LSB)
4
PID (MSB)
5
reserved
6
DID (MSB)
0xD2 Load
Byte
Value (MSB->LSB)
0
0xD2
1
VID (LSB)
2
VID (MSB)
3
PID (LSB)
4
PID (MSB)
5
reserved
6
DID (MSB)
7
EnabledOverCurrentTimer[3:0],
DisableOvercurrentTimer[3:0]
8
ActivePorts[3:0], RemovablePorts[3:0]
9
MaxPower
10
HubControllerPower
11
PowerOnTimer
12
IllegalHubDescriptor, CompoundDevice,
FullspeedOnly, NoPortIndicators, Reserved,
GangPowered, Reserved, Reserved
Document Number: 38-08037 Rev. *M
Needs to be programmed with 0xD2
Byte 1: VID (LSB)
Least Significant Byte of Vendor ID
Byte 2: VID (MSB)
Most Significant Byte of Vendor ID
Byte 3: PID (LSB)
Least Significant Byte of Product ID
Byte 4: PID (MSB)]
Most Significant Byte of Product ID
Byte 5: Reserved
Reserved
Byte 6: DID (MSB)]
Most Significant Byte of Device ID
Byte 7: EnabledOvercurrentTimer[3:0],
DisabledOvercurrentTimer[3:0]
Count time in ms for filtering overcurrent detection. Bits 7–4
are for an enabled port, and bits 3–0 are for a disabled port.
Both range from 0 ms to 15 ms. See section Port Indicators
on page 5. Default: 8 ms = 0x88.
Byte 8: ActivePorts[3:0], RemovablePorts[3:0]
Bits 7–4 are the ActivePorts[3:0] bits that indicates if the corresponding port is usable. For example, a two-port hub that
uses ports 1 and 4 would set this field to 0x09. The total number of ports reported in the Hub Descriptor: bNbrPorts field is
calculated from this. Bits 3–0 are the RemovablePorts[3:0]
bits that indicates whether the corresponding logical port is
removable (set to high). Logical port numbers are from 1 to n
where n is the total number of active ports. If port 2 is disabled
then physical ports 1, 3, and 4 map to logical ports 1, 2, and
3. These bit values are reported appropriately in the
HubDescriptor:DeviceRemovable field. Default: 0xFF.
Byte 9: MaximumPower
This value is reported in the ConfigurationDescriptor:bMaxPower field and is the current in 2 mA increments that is required from the upstream hub. Default: 0x28 = 80 mA for full
speed and 0x57 = 174 mA for high speed.
Byte 10: HubControllerPower
This value is reported in the HubDescriptor:bHubContrCurrent field and is the current in milliamperes required by the
hub controller. Default: 0x50 = 80 mA for full speed and 0xAE
= 174 mA for high speed.
Byte 11: PowerOnTimer
This
value
is
reported
in
the
HubDescriptor:
bPwrOn2PwrGood field and is the time in 2 ms intervals from
the SetPortPower command until the power on the corresponding downstream port is good. Default: 0x32 = 100 ms.
Page 12 of 25
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CY7C656xx
Byte 12: IllegalHubDescriptor, CompoundDevice, Full
Speed Only, NoPortIndicators, Reserved, GangPowered,
SingleTTOnly
Bit 7: IllegalHubDescriptor. For GetHubDescriptor request,
some USB hosts use a DescriptorTypeof 0x00 instead of
HUB_DESCRIPTOR, 0x29. According to the USB 2.0 standard, 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 can be set to allow CY7C656xx to accept a DescriptorType
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, wHubCharacteristics 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’.
0xD4 Load
Byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Value (MSB->LSB)
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
Document Number: 38-08037 Rev. *M
Factory
Fusable
X
X
X
X
0xD4 Load (continued)
Byte
17
18
Value (MSB->LSB)
IllegalHubDescriptor, CompoundDevice, FullspeedOnly, NoPortIndicators, Reserved, GangPowered,
SingleTTOnly, Reserved
AmberPolarity, GreenPolarity,
ModulateIndicators, PowerControlPolarity, OverCurrentPolarity,
OverCurrentMode1,
OverCurrentMode2
Write Protect
NumLangs
SupportedStrings
ActivePorts[3:0]
RemovablePorts[3:0]
LangID
iManufacturer
19
20
21
22
23
24
a
=24+2N
b
iProduct
=a+2N
c
iSerialNumber
=b+2N
d
iConfiguration(FS)
=c+2N
e
iConfiguration(HS)
=d+2N
f
iInterface(0)
=e+2N
g
reserved
=f+2N
h=g+2N Strings
N:NumLangs
Factory
Fusable
X
X
X
Byte 0: 0xD4
Needs to be programmed with 0xD4
X
Byte 1: VID (LSB)
Least Significant Byte of Vendor ID
Byte 2: VID (MSB)
X
X
Most Significant Byte of Vendor ID
Byte 3: PID (LSB)
Least Significant Byte of Product ID
X
X
Byte 4: PID (MSB)
Most Significant Byte of Product ID
Byte 5: Reserved
Reserved
Byte 6: DID (MSB)
Most Significant Byte of Device ID
Page 13 of 25
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CY7C656xx
Byte 7: EnabledOvercurrentTimer[3:0], DisabledOvercurrentTimer[3:0]
Count time in ms for filtering overcurrent detection. Bits 7–4
are for an enabled port, and bits 3–0 are for a disabled port.
Both range from 0 ms to 15 ms. See section Port Indicators
on page 5. Default: 8 ms = 0x88.
Byte 8: MaximumPower (Full speed)
This value is reported in the ConfigurationDescriptor:bMaxPower field and is the current in 2 mA increments that is required from the upstream hub when connected at full speed.
Default: 0x28 = 80 mA for full speed.
Byte 9: MaximumPower (High speed)
This value is reported in the ConfigurationDescriptor:bMaxPower field and is the current in 2 mA increments that is required from the upstream hub when connected at high speed.
Default: 0x57 = 174 mA for high speed.
Byte 10: Reserved
Write zeros to this location.
Byte 11: Reserved
Write zeros to this location.
Byte 12: HubControllerPower (Full speed, bus powered)
This value is reported in the HubDescriptor:bHubContrCurrent field and is the current in milliamperes required by the
hub controller when connected on the upstream hub as a full
speed. Default: 0x50 = 80 mA for full speed.
Byte 13: HubControllerPower (High speed, bus powered)
This value is reported in the HubDescriptor:bHubContrCurrent field and is the current in milliamperes required by the
hub controller when connected on the upstream hub as a high
speed. Default: 0xAE = 174 mA for high speed.
Byte 14: HubControllerPower (Full speed, self powered)
This value is reported in the HubDescriptor:bHubContrCurrent field and is the current in milliamperes required by the
hub controller when connected on the upstream hub as a full
speed. Default: 0x50 = 80 mA for full speed.
Byte 15: HubControllerPower (High speed, self powered)
This value is reported in the HubDescriptor:bHubContrCurrent field and is the current in milliamperes required by the
hub controller when connected on the upstream hub as a high
speed. Default: 0x64 = 100 mA for high speed.
Byte 16: PowerOnTimer
This
value
is
reported
in
the
HubDescriptor:
bPwrOn2PwrGood field and is the time in 2 ms increments
from the SetPortPower command until the power on the corresponding downstream port is good. Default: 0x32 = 100 ms.
Byte 17: IllegalHubDescriptor, CompoundDevice, Full
Speed Only, NoPortIndicators, Reserved, GangPowered,
Reserved
Bit 7: IllegalHubDescriptor. For GetHubDescriptor request,
some USB hosts use a DescriptorTypeof 0x00 instead of
HUB_DESCRIPTOR, 0x29. According to the USB 2.0 standard, a hub must treat this as a Request Error, and STALL the
transaction accordingly (USB 2.0, 11.24.2.5). For systems
Document Number: 38-08037 Rev. *M
that do not accept this, the IllegalHubDescriptor configuration
bit may be set to allow CY7C656xx to accept a DescriptorType of 0x00 for this command. Default set to 1.
Bit 6: CompoundDevice. Indicates whether the hub is part of
a compound device. This is reported in the HubDescriptor,
wHub-Characteristics: b2. Default is 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, wHubCharacteristics 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’.
Byte 18: AmberPolarity, GreenPolarity, SelfPowerable,
ModulateIndicators, PowerControlPolarity, OverCurrentPolarity, OverCurrentMode1, OverCurrentMode2
Bit 7: AmberPolarity. Indicates the polarity of the amber indicator control. (1 = high, 0 = low)
Bit 6: GreenPolarity. Indicates the polarity of the green indicator control. (1 = high, 0 = low)
Bit 5: SelfPowerable. Indicates whether the hub is capable of
operating in self powered mode. If ‘0’, the hub is capable of
bus powered operation only.
Bit 4: ModulateIndicators. If this bit is set, the indicator outputs
are modulated by a square wave of 120 Hz, for power savings. If ‘0’, the outputs are static.
Bit 3: PowerControlPolarity. If set, the power control outputs
are active HIGH. If not set, the power control outputs are active LOW.
Bit 2: OverCurrentPolarity. If set, the overcurrent inputs are
active HIGH. If not set, the overcurrent inputs are active LOW.
Bit 1: OverCurrentMode1. Reported as bit 4 of the wHubCharacteristics field of the hub descriptor. If set to ‘1’, this bit disables overcurrent detection.
Bit 0: OverCurrentMode2. Reported as bit 3 of the wHubCharacteristics field of the hub descriptor. If Bit 1 of this byte is set
to ‘0’, overcurrent detection is enabled. If this bit (Bit 0) is set
to ‘1’, the hub reports overcurrent on a per-port basis. If set to
‘0’, the hub reports overcurrent as the summation of all ports’
current draw.
Byte 19: Write Protect
Writing the value 0x42 to this field enables Write Protect and
any future writes to the EEPROM fail. Default is set to ‘0’.
Byte 20: NumLangs
Number of supported string languages. CY7C656xx supports
a maximum of 31 languages; if this field is set to ’0’ or a number larger than 31, all string support is disabled.
Page 14 of 25
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CY7C656xx
Byte 24: LangID
Byte 21: SupportedStrings
This field contains a bitmap of strings supported by the hub.
A set bit indicates that the standard string is supported. A bit
not set indicates that the string is not supported. The hub
controller returns a non zero index for each string that is supported, and returns 0x00 for each string not supported, as
indicated by this field. The bits in this field correspond to the
following standard strings.
Table 4. Byte 21 Supported Strings
Bit
Name
7
Description
Reserved
Reserved
5
Interface (0)
The iInterface string index
reported in the first interface
descriptor (alternate setting 0)
4
iConfiguration
(high speed) The iConfiguration
string index reported in the
configuration descriptor, when
operating at high speed
iConfiguration
Byte a: iManufacturer
Array of addresses for the iManufacturer strings. Each address is two bytes long, stored LSB first. The array has NumLangs entries (2 * NumLangs bytes). The starting EEPROM
address is based upon the number entered for NumLangs.
The address a = 24 + 2 * NumLangs.
Byte b: iProduct
6
3
Array of LangID codes supported by the hub. Each LangID
consists of two bytes, stored LSB first. The array has NumLangs entries (2 * NumLangs bytes).
(full speed) The iConfiguration
string index reported in the
configuration descriptor, when
operating at full speed
2
iSerial Number
The iSerialNumber string index
reported in the device descriptor
1
iProduct
The iProduct string index
reported in the device descriptor
0
iManufacturer
The iManufacturer string index
reported in the device descriptor
Byte 22: ActivePorts[3:0]
Bits 3–0 are the ActivePorts[3:0] bits that indicates if the corresponding port is usable. For example, a two-port hub that
uses ports 1 and 4 sets this field to 0x09. The total number of
ports reported in the Hub Descriptor: bNbrPorts field is calculated from this. Default 0x0F.
Byte 23: RemovablePorts[3:0]
Bits 3–0 are the RemovablePorts[3:0] bits that indicates
whether the corresponding logical port is removable (set to
high). Logical port numbers are from 1 to n where n is the total
number of active ports. If port 2 is disabled then physical ports
1, 3, and 4 map to logical ports 1, 2, and 3. These bit values
are recorded in the HubDescriptor:DeviceRemovable field.
Default 0x0F.
Document Number: 38-08037 Rev. *M
Array of addresses for the iProduct strings. Each address is
two bytes long, stored LSB first. The array has NumLangs
entries (2 * NumLangs bytes).
The address b = a + 2 * NumLangs.
Byte c: iSerialNumber
Array of addresses for the iSerialNumber strings. Each address is two bytes long, stored LSB first. The array has NumLangs entries (2 * NumLangs bytes).
The address c = b + 2 * NumLangs.
Byte d: iConfiguration(Full Speed)
Array of addresses for the iConfiguration (full speed) strings.
Each address is two bytes long, stored LSB first. The array
has NumLangs entries (2 * NumLangs bytes).
The address d = c + 2*NumLangs.
Byte e: iConfiguration(High Speed)
Array of addresses for the iConfiguration (high speed) strings.
Each address is two bytes long, stored LSB first. The array
has NumLangs entries (2 * NumLangs bytes).
The address e = d + 2 * NumLangs.
Byte f: iInterface(0)
Array of addresses for the iInterface(0) strings. Each address
is two bytes long, stored LSB first. The array has NumLangs
entries (2 * NumLangs bytes).
The address f = e + 2 * NumLangs.
Byte g: iInterface(1)
Reserved
Byte h: Strings
Strings addressed by the string pointers. Strings must comply
with the USB specification. The first byte must be the length
of the string in bytes, the second must be 0x03, and the string
must be in Unicode.
Page 15 of 25
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CY7C656xx
Supported USB Requests
Device Class Commands
Table 5. Device Class Requests
bmRequestType
bRequest
GetDeviceStatus
Request
10000000B
0x00
0x0000
wValue
0x0000
wIndex
0x0002
wLength
2 Byte Device Status
Data
GetInterfaceStatus
10000001B
0x00
0x0000
0x0000
0x0002
2 Byte Interface
Status
GetEndpointStatus
10000010B
0x00
0x0000
0x0000
0x0002
2 Byte Endpoint
Status
GetDeviceDescriptor
10000000B
0x06
0x0001
Zero or
Language ID
Descriptor
Length
Descriptor
GetConfigDescriptor
10000000B
0x06
0x0002
Zero or
Language ID
Descriptor
Length
Descriptor
GetDeviceQualifierDescriptor
10000000B
0x06
0x0006
Zero or
Language ID
Descriptor
Length
Descriptor
GetOtherSpeedConfigurationDescriptor
10000000B
0x06
0x0007
Zero or
Language ID
Descriptor
Length
Descriptor
GetConfiguration[7]
10000000B
0x08
0x0000
0x0000
0x0001
Configuration Value
SetCongfiguration[7]
00000000B
0x09
Configuration
Value
0x0000
0x0000
None
GetInterface
10000001B
0xA
0x0000
0x0000
0x0001
Interface Number
SetInterface
00000001B
0x0B
Alternate
Setting
Interface
Number
0x0000
None
SetAddress
00000000B
0x05
Device Address 0x0000
0x0000
None
SetDeviceRemoteWakeup
00000000B
0x03
0x01
0x0000
0x0000
None
SetDeviceTest_J
00000000B
0x03
0x02
0x0100
0x0000
None
SetDeviceTest_K
00000000B
0x03
0x02
0x0200
0x0000
None
SetDeviceTest_SE0_NAK
00000000B
0x03
0x02
0x0300
0x0000
None
SetDeviceTest_Packet
00000000B
0x03
0x02
0x0400
0x0000
None
SetEndpointHalt
00000000B
0x03
0x00
0x0000
0x0000
None
ClearDeviceRemoteWakeup
00000000B
0x01
0x01
0x0000
0x0000
None
ClearEndpointHalt
00000000B
0x01
0x00
0x0000
0x0000
None
Note
7. Only one configuration is supported in CY7C656xx.
Document Number: 38-08037 Rev. *M
Page 16 of 25
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CY7C656xx
Hub Class Commands
Table 6. Hub Class Requests
Request
bmRequestType bRequest
wValue
wIndex
wLength
Data
GetHubStatus
10100000B
0x00
0x0000
0x0000
0x0004
Hub Status (See Table 11-19
of USB 2.0 Specifications)
Change Status (See Table
11-20 of USB 2.0 Specifications)
GetPortStatus
10100011B
0x00
0x0000
Byte 0: 0x00 0x0004
Byte 1: Port
Port Status (See Table 11-21
of USB 2.0 Specifications)
Change Status (See Table
11-20 of USB 2.0 Specifications)
ClearHubFeature
00100000B
0x01
Feature
Selectors[8] 0 or 1
0x0000
0x0000
None
ClearPortFeature
00100011B
0x01
Feature
Byte 0: 0x00 0x0000
Selectors[8]
Byte 1: Port
1, 2, 8, 16, 17, 18, 19,
or 20
None
ClearPortFeature
00100011B
0x01
Feature Selectors[8] Byte 0: 22
Byte 1: Port
(PORT_INDICATOR)
None
SetHubFeature
00100000B
0x03
Feature
Selector[8]
0 or 1
0x0000
0x0000
SetPortFeature
00100011B
0x03
Feature
Selectors[8]
2, 4 or 8
Port
0x0000
None
SetPortFeature
00100011B
0x03
Feature
Selector[8] 21
(PORT_TEST)
Byte 0:
0x0000
Selectors[8]
1,2, 3, 4 or 5
Byte 1: Port
None
SetPortFeature
00100011B
0x03
Feature
Byte 0:
0x0000
Selector[8] 22
Selectors[10]
(PORT_INDICATOR) 0, 1, 2, or 3
Byte 1: Port
None
GetHubDescriptor
10100000B
0x06
Descriptor Type and
Descriptor Index
Hub
Descriptor
Length
ClearTTBuffer
00100011B
0x08
Dev_Addr, EP_Num TT_Port
0x0000
None
ResetTT
00100000B
0x09
0x0000
Byte 0: 0x00 0x0000
Byte 1: Port
None
GetTTState
10100011B
0X0A
TT_Flags
Byte 0: 0x00 TT State
Byte 1: Port Length
TT State
StopTT
00100011B
0x0B
0x0000
Byte 0: 0x00 0x0000
Byte 1: Port
None
Document Number: 38-08037 Rev. *M
0x0000
Page 17 of 25
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CY7C656xx
Table 6. Hub Class Requests (continued)
Request
bmRequestType bRequest
wValue
wIndex
wLength
Data
Vendor Commands
Read EEPROM
11000000B
0x02
0x00
0x00
Length
Data
This request results in reading length bytes of data from the external memory device and returned to the host. Data is read
beginning with address 0. This request fails if there is no external memory device present. This request is only valid if the hub is
in the Configured state; the request fails otherwise.
Write EEPROM
01000000B
0x01
0x00
0x00
Length
Data
This request results in writing length bytes of data to the external memory device. Data is written beginning with address 0. This
request fails if there is no external memory device present. This request is only valid if the hub is in the Configured state or if the
external memory device write protect byte is set; the request fails otherwise.
Table 7. Hub Class Feature Selector
Recipient
Value
C_HUB_LOCAL_POWER
Feature Selector
Hub
0
C_HUB_OVER_CURRENT
Hub
1
PORT_CONNECTION
Port
0
PORT_ENABLE
Port
1
PORT_SUSPEND
Port
2
PORT_RESET
Port
4
PORT_POWER
Port
8
PORT_LOW_SPEED
Port
9
C_PORT_CONNECTION
Port
16
C_PORT_ENABLE
Port
17
C_PORT_SUSPEND
Port
18
C_PORT_OVER_CURRENT
Port
19
C_PORT_RESET
Port
20
PORT_TEST
Port
21
PORT_INDICATOR
Port
22
Table 8. Test Mode Selector for Feature Selector
PORT_TEST (0x21)[9]
PORT_TEST Mode Description
Selector Value
Test_J
1
Test_K
2
Test_SE0_NAK
3
Test_Packet
4
Test_Force_Enable
5
Table 9. Port Indicator Selector for Feature Selector PORT_INDICATOR (0x22)
Port Indicator Color
Selector Value
Port Indicator Mode
Color set automatically as shown in Table 1 on page 5
0
Automatic Mode
Amber
1
Manual Mode
Green
2
Manual Mode
Off
3
Manual Mode
Notes
8. Selector values for different features are presented in Table 7 on page 18.
9. Selector values for different features are presented in Table 8 on page 18.
10. Selector values for different features are presented in Table 9 on page 18.
Document Number: 38-08037 Rev. *M
Page 18 of 25
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CY7C656xx
Upstream USB Connection
The following is a schematic of the USB upstream connector.
Figure 2. USB Upstream Port Connection
BUSPOWER
VCC
2.2 μF
10V
D–
D–
D+
D+
100 kΩ
GND
SHELL
Downstream USB Connection
The following is a schematic of the USB downstream connector.
Figure 3. USB Downstream Port Connection
VCC
PWRx
150 µF
10V
0.01 µF DD–[X]
D–
DD+[X]
D+
GND
SHELL
LED Connection
The following is a schematic of the LED circuitry.
Figure 4. USB Downstream Port Connection
3.3V
GREEN#[x]
AMBER#[x]
Document Number: 38-08037 Rev. *M
680Ω
680Ω
Page 19 of 25
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CY7C656xx
System Block Diagram
Figure 5. Sample Schematic for 4-Port Self Powered Configuration
5V
VBUSPOWER
VBUS
VCC
D– 2.2 μF
D–
OVR1
10V
D+
D+
DsPWR1
PWR1
15 kΩ
150 kΩ
DsPWR4
Power
PWR2 Management
OVR2
PWR3
GND
OVR3
PWR4
OVR4
SHELL
DsPWR3
150 μF
10V
DD–[1]
DD+[1]
0.01 μF
VCC
D–
D+
GND
SHELL
DsPWR2
DsPWR1
3.3V
GREEN#[1]
AMBER#[1]
680Ω
680Ω
SPI_SD
DO
SPI_SCK
SPI_CS
DsPWR2
DI
CLK
SPI_SD
150 μF
10V
CS
SPI
EEPROM
DD–[2]
DD+[2]
0.01 μF
VCC
D–
D+
GND
SHELL
24 MHz
3.3V
3.3V
3.3V
GREEN#[2]
12 pF
12 pF
XIN
SELFPWR
DsPWR3
GREEN[1]
AMBER[1]
GREEN[1]
AMBER[1]
GREEN[2]
AMBER[2]
GREEN[2]
AMBER[2]
RESET
GREEN[3]
AMBER[3]
GREEN[3]
AMBER[3]
D–
D-
GREEN[4]
AMBER[4]
GREEN[4]
AMBER[4]
D+
D+
VBUSPOWER
3.3V
VBUSPOWER
100K
0.1μF
DD–[1]
DD-[1]
DD+[1]
DD+[1]
DD–[2]
DD-[2]
DD+[2]
DD+[2]
DD–[3]
DD-[3]
DD+[3]
DD+[3]
DD–[4]
DD-[4]
HX2LP
PWR1
OVR1
PWR2
OVR2
PWR3
OVR3
PWR4
OVR4
SPI_CS
SPI_SCK
SPI_SD
DD+[4]
GND1
GND2
GND3
GND4
GND5
GND6
GND7
GND8
GND9
GND10
GND11
GND12
DD+[4]
680Ω
XOUT
10K
VCC1
VCC2
VCC3
VCC4
VCC5
VCC6
VCC7
VCC8
VCC9
VCC10
VCC11
AMBER#[2]
680Ω
Document Number: 38-08037 Rev. *M
PWR1
OVR1
PWR2
OVR2
PWR3
OVR3
PWR4
OVR4
SPI_CS
150 μF
10V
DD-[3]
DD+[3]
0.01 μF
VCC
D–
D+
GND
SHELL
3.3 V
GREEN#[3]
AMBER#[3]
680Ω
680Ω
DsPWR4
150 μF
10V
DD-[4]
DD+[4]
0.01 μF
VCC
D–
D+
GND
SHELL
SPI_SCK
SPI_SD
3.3 V
GREEN#[4]
AMBER#[4]
680Ω
680Ω
Page 20 of 25
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CY7C656xx
Electrical Characteristics
Absolute Maximum Ratings
Operating Conditions
Exceeding maximum ratings may impair the useful life of the
device. These user guidelines are not tested.
Storage Temperature ................................ –65°C to +150 °C
Ambient Temperature with Power Applied:
Commercial
....................................... 0°C to +70°C
Automotive
................................... –40°C to +85°C
Supply Voltage to Ground Potential ...............–0.5V to +4.0V
TA (Ambient Temperature Under Bias)
Commercial
........................... 0°C to +70°C
Automotive
....................... –40°C to +85°C
Supply Voltage............................................+3.15V to +3.45V
Ground Voltage.................................................................. 0V
FOSC (Oscillator or Crystal Frequency)...... 24 MHz ± 0.05%
parallel resonant, 12 pF load capacitance, 0.5 mW
DC Voltage Applied to Outputs
in High Z State ....................................... –0.5V to VCC + 0.5V
Power Dissipation (4 HS ports)..................................... 0.9 W
Static Discharge Voltage........................................... > 2000V
Maximum Output Sink Current per I/O ........................ 10 mA
DC Electrical Characteristics
Parameter
VCC
Description
Conditions
Supply Voltage
Min
Typ
Max
3.15
3.3
3.45
V
18
V/ms
VCC RampUp Ramp Rate on VCC
Unit
VIH
Input High Voltage
2
5.25
V
VIL
Input Low Voltage
–0.5
0.8
V
±10
μA
Il
Input Leakage Current
0 < VIN < VCC
VOH
Output Voltage High
IOUT = 4 mA
IOUT = –4 mA
VOL
Output Low Voltage
IOH
Output Current High
IOL
CIN
ISUSP
Suspend Current
ICC
Supply Current
2.4
V
0.4
V
4
mA
Output Current Low
4
mA
Input Pin Capacitance
10
pF
4 Active Ports
2 Active Ports
No Active Ports
μA
80
Full Speed Host, Full Speed Devices
86
110
mA
High Speed Host, High Speed Devices
231
260
mA
High Speed Host, Full Speed Devices
154
180
mA
Full Speed Host, Full Speed Devices
77
100
mA
High Speed Host, High Speed Devices
163
190
mA
High Speed Host, Full Speed Devices
136
160
mA
Full Speed Host
65
90
mA
High Speed Host
93
120
mA
USB Transceiver
USB 2.0 certified in full, low, and high speed modes.
AC Electrical Characteristics
Both the upstream USB transceiver and all four downstream transceivers have passed the USB-IF USB 2.0 Electrical Certification
Testing.
Document Number: 38-08037 Rev. *M
Page 21 of 25
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CY7C656xx
Table 10. Serial Peripheral Interface
Parameter
Description
Conditions
Min
Typ
Max
Unit
Clock Rise/Fall Time
500
ns
Clock Frequency
250
KHz
Data Setup Time
50
ns
Hold Time
100
ns
Reset Period
1.9
ms
Ordering Information
Ordering Code
Package Type
CY7C65630-56LFXC
56-Pin QFN 4-Port Punch Type QFN Bulk
CY7C65630-56LFXCT
56-Pin QFN 4-Port Punch Type QFN Tape & Reel
CY7C65630-56LTXC
56-Pin QFN 4-Port Sawn Type QFN Bulk
CY7C65630-56LTXCT
56-Pin QFN 4-Port Sawn Type QFN Tape & Reel
CY7C65630-56LFXA
56-Pin QFN 4-Port Automotive AEC grade
CY7C65620-56LFXC
56-Pin QFN 2-Port Punch Type QFN Bulk
CY7C65620-56LFXCT
56-Pin QFN 2-Port Punch Type QFN Tape & Reel
CY7C65620-56LTXC
56-Pin QFN 2-Port Sawn Type QFN Bulk
CY7C65620-56LTXCT
56-Pin QFN 2-Port Sawn Type QFN Tape & Reel
CY4606
CY7C65630 USB 2.0 4-Port Hub Reference Design Kit
CY4605
CY7C65620 USB 2.0 2-Port Hub Reference Design Kit
Document Number: 38-08037 Rev. *M
Page 22 of 25
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CY7C656xx
Package Diagram
The CY7C656xx is available in a space saving 56-pin QFN (8 × 8 mm).
Figure 6. 56-Pin Sawn QFN (8 X 8 X 1.00 mm)
51-85187 *D
Figure 7. 56-Pin QFN 8 x 8 mm LF56A (Subcon Punch Type with 6.1 x 6.1 EPad)
3)$% 6)%7
4/0 6)%7
"/44/- 6)%7
;=
;=
;=
!
#
;= -!8
;= -!8
;=
;=
;= -!8
;= 2%&
.
;=
;=
;=
;=
=
!
0). )$
;= 2
.
² ²
#
3%!4).' 0,!.%
;=
62/'(5$%/(
(;326('
3$'
;=
;=
;=
;=
;=
;=
;=
;=
;=
8
;=
;=
127(6
+$7&+$5($,662/'(5$%/((;326('0(7$/
5()(5(1&(-('(&02
3$&.$*(:(,*+7J
$//',0(16,216$5(,100>0,10$;@
3$&.$*(&2'(
3$57
'(6&5,37,21
/)
/<
67$1'$5'
3%)5((
51-85144 *G
Document Number: 38-08037 Rev. *M
Page 23 of 25
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CY7C656xx
Document History Page
Document Title: CY7C656xx EZ-USB HX2LP™ Low Power USB 2.0 Hub Controller Family
Document Number: 38-08037
Rev.
ECN No.
Orig. of
Change
Submission
Date
**
131505
JTC
*A
231329
KKU
See ECN
Changed load capacitors to 12 pF, updated part numbers, added functional
overviews, block descriptions, pin configurations, default descriptors, configurations options, supported USB requests, electrical characteristics and package
diagram
*B
250869
ARI
See ECN
Added typical values for Icc in the DC Electrical Characteristics table, changed MPN
CY7C65650 to CY7C65640B, added CY7C65620 package
*C
330195
KKU
See ECN
Added Reset period in to the table in section ‘Serial Peripheral Interface’
Added 0xD4 EEPROM Load
Added vendor command values
Added VCC ramp rate
Updated block diagram
*D
342997
KKU
See ECN
Updated features list
Removed from the Enumeration section “Once the hub is configured, the full hub
functionality is available”
Added reference to 0xD4 load to the Downstream Ports section
Added reference to polarity control in the Power Switching and Over-current
Detection sections
Updated the Automatic Port State to Port Indicator Color Mapping table to match
USB-IF spec changes
Added LED modulation to the Port Indicators section
Updated pin description table - SELFPWR# to SELFPWR and removed references
to limitations of bus powered. Added reference to polarity control on PWR#,
OVR# and LED control lines
Updated Default descriptors
Updated EEPROM list to include 25LC080
Removed NoEOPatEOF1 bit
Added LED polarity control
*E
498396
TEH
See ECN
Removed all references to HX1TT and Multi-TT
Updated Block Diagrams to remove ports and TTs
Removed Preliminary
Updated Device ID default
Added Write Protect Description
Correct sample schematics to reflect latest RDK
Updated Power Consumption Numbers
Updated Part Numbers
*F
570287
ARI
See ECN
Corrected typo in Table 3. Changed downstream port 4 signal labels from [3] to [4].
Added dimensions of E-Pads to Figure 6.
*G
852600
KKU
See ECN
Changed feature “2-Port Single TT for bus power support” to “Bus powered configurations”
Updated figure 5.
Added blank EEPROM statement to the Device Descriptor section
Added blank EEPROM statement to the Configuration Options section
Added indicator for factory fusable options.
Description of Change
02/12/2004 New data sheet
Document Number: 38-08037 Rev. *M
Page 24 of 25
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CY7C656xx
Document History Page (continued)
Document Title: CY7C656xx EZ-USB HX2LP™ Low Power USB 2.0 Hub Controller Family
Document Number: 38-08037
Rev.
ECN No.
Orig. of
Change
Submission
Date
Description of Change
*H
1019740
KKU/ARI
See ECN
Added to Features: Automotive AEC grade option (-40-85C).
Added to Part numbers: CY7C65630-56LFXA: 56-pin QFN 4-Port Automotive AEC
grade.
Added absolute ambient temperature with power applied for automotive part.
Added operational Ambient Temperature Under Bias for automotive part.
Replaced TBD under absolute maximum power dissipation with 0.9 Watts.
Removed internal part numbers referenced in figure 6 note 5.
Changed “USB 2.0-Compliant” to “USB 2.0-Certified”
Removable Ports updated to reflect logical ports. Edited for active voice.
*I
2238608
KKU
See ECN
Block diagrams for CY7C656530 and CY7C65620 were altered in the *H revision
and should not have been. Reverted diagrams to *G version
*J
2370406
PYRS
See ECN
Changing the status from Preliminary to Final as per author’s confirmation
*K
2657415
DPT/PYRS
02/10/09
Added package diagram for 56-pin Sawn QFN.
*L
2705817
GOR/PYRS
05/13/09
Added new part numbers to the ordering information table
*M
2719596
VIVG/AESA
06/16/2009 Added CY7C65620-56LFXA part in the ordering information table
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
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© Cypress Semiconductor Corporation, 2004-2009. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of
any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for
medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as
critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems
application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign),
United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,
and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress
integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without
the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not
assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where
a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer
assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document Number: 38-08037 Rev. *M
Revised June 12, 2009
Page 25 of 25
TetraHub and EZ-USB HX2LP are trademarks of Cypress Semiconductor Corporation. All other product and company names mentioned in this document are trademarks of their respective holders.
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