CYPRESS CY4605

CY7C65621/31
EZ-USB HX2LP Lite™
Low Power USB 2.0 Hub Controller Family
Features
■
USB 2.0 hub controller
■
In-system EEPROM programming
■
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
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
■
Integrated upstream and downstream termination resistors
■
Integrated port status indicator control
■
24 MHz external crystal (integrated phase locked loop (PLL))
Block Diagram CY7C65631
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+
D-
Port Power
Control
Port
Status
USB Downstream Port 2
USB 2.0
PHY
PWR#[1]
LED D+
OVR#[1]
Cypress Semiconductor Corporation
Document #: 001-52934 Rev. *C
•
Port Power
Control
D- PWR#[2]
Port
Status
OVR#[2]
LED
USB Downstream Port 4
USB Downstream Port 3
USB 2.0
PHY
D+
D-
198 Champion Court
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 February 23, 2011
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CY7C65621/31
Block Diagram CY7C65621
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+
Document #: 001-52934 Rev. *C
Port Power
Control
D- PWR#[1]
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 27
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CY7C65621/31
Contents
Introduction .........................................................................4
USB Serial Interface Engine ..........................................4
Hub Repeater ................................................................4
Transaction Translator ..................................................4
Applications ........................................................................4
Functional Overview ..........................................................4
System Initialization .......................................................4
Enumeration ..................................................................4
Downstream Ports .........................................................5
Upstream Port ...............................................................5
Power Switching ............................................................5
Overcurrent Detection ...................................................5
Port Indicators ...............................................................5
Pin Configuration ...............................................................7
Pin Description Table x ......................................................8
Default Descriptors ..........................................................10
Device Descriptor ........................................................10
Configuration Descriptor ..............................................10
Interface Descriptor .....................................................11
Endpoint Descriptor .....................................................11
Device Qualifier Descriptor ..........................................11
Hub Descriptor ............................................................12
Configuration Options .....................................................13
0xD0 Load ...................................................................13
0xD2 Load ...................................................................13
0xD4 Load ...................................................................14
Document #: 001-52934 Rev. *C
Supported USB Requests ................................................17
Device Class Commands ............................................17
Hub Class Commands ................................................18
Upstream USB Connection ..............................................20
Downstream USB Connections .......................................20
LED Connections ..............................................................20
System Block Diagram .....................................................21
Electrical Characteristics .................................................22
Absolute Maximum Ratings .........................................22
Operating Conditions ...................................................22
DC Electrical Characteristics .......................................22
USB Transceiver .........................................................22
AC Electrical Characteristics .......................................22
Ordering Information ........................................................23
Ordering Code Defintions ............................................23
Package Diagram ..............................................................24
Acronyms ..........................................................................25
Document Conventions ...................................................25
Units of Measure .........................................................25
ocument History Page ......................................................26
Sales, Solutions, and Legal Information ........................27
Worldwide Sales and Design Support .........................27
Products ......................................................................27
PSoC® Solutions .........................................................27
Page 3 of 27
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CY7C65621/31
Introduction
EZ-USB HX2LP Lite™ is Cypress’s next generation family of
high performance, low power USB 2.0 hub controllers. HX2LP
Lite 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 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. CY7C65631: 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 CY7C65631 is available in a 56
QFN and is also pin-for-pin compatible with the CY7C65640.
2. CY7C65621:
This device option is for a 2-port bus powered application.
Both ports share a single transaction translator. The
CY7C65621 is available in a 56 QFN.
All device options are supported by Cypress’ 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 CY7C65621/31 to
communicate with the USB host. The SIE handles the following
USB activity independently of the Hub Control Block.
■
Bit stuffing/unstuffing
■
Checksum generation/checking
■
TOKEN type identification
■
Address checking.
Hub Repeater
The Hub Repeater manages connectivity between upstream and
downstream facing ports that are operating at the same speed.
It supports full speed, low speed, 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 (TT) basically 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 a 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 Transaction Translator 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 Transaction
Document #: 001-52934 Rev. *C
Translator. If a high speed device is connected to this high speed
hub, the route only includes the repeater and no Transaction
Translator because the device and the hub operate 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 Lite device family are:
■
Standalone hubs
■
Motherboard hubs
■
Monitor hubs
■
Advanced port replicators
■
Docking stations
■
Split-PC designs
■
External personal storage drives
■
Keyboard hubs
Functional Overview
The Cypress CY7C65621/31 USB 2.0 hubs are high performance, low system cost solutions for USB. The CY7C65621/31
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 CY7C65621/31 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 13 for more
details.
After reading the EEPROM, if VBUSPOWER (connected to
up-stream VBUS) is high, CY7C65621/31 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,
CY7C65621/31 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 CY7C65621/31 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 CY7C65621/31 operates as a normal 1.x hub (operating at
full speed).
Enumeration
After a USB Bus Reset, CY7C65621/31 is in an unaddressed,
unconfigured state (configuration value set to ‘0’). During the
enumeration process, the host sets the hub's address and
configuration.
When the hub is configured, the full hub functionality is available.
Page 4 of 27
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CY7C65621/31
Downstream Ports
The CY7C65621/31 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 13.
Downstream D+ and D– pull down resistors are incorporated in
CY7C65621/31 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). Upon 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 when the port is enabled.
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 CY7C65621/31 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 over-current detection of downstream
ports is managed by control pins connected to an external power
Document #: 001-52934 Rev. *C
switch device. PWR [n]# output pins of the CY7C65621/31 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 can
be configured through the EEPROM; see 0xD4 Load on page 14.
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 CY7C65621/31 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 0xD4 Load on page 14.
Port Indicators
The USB 2.0 port indicators are also supported directly by
CY7C65621/31. 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 CY7C65621/31 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 CY7C65621/31. The CY7C65621/31 port
indicators has two modes of operation: automatic and manual.
On power up the CY7C65621/31 defaults to automatic mode,
where the color of the Port Indicator (green, amber, off) indicates
the functional status of the CY7C65621/31 port. In automatic
mode, the CY7C65621/31 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.
Page 5 of 27
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CY7C65621/31
Table 1. Automatic Port State to Port Indicator Color Mapping[1]
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 0xD4 Load on page 14.
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 allow 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. Port Indicator Color Definitions in Manual Mode[2]
Color Definition
Port State
Off
Not Operational
Amber
Error Condition
Green
Fully Operational
Blinking Off/Green
Software Attention
Blinking Off/Amber
Hardware Attention
Blinking Green/Amber
Reserved
Table 2 displays the color definition of the indicators when
CY7C65621/31 is in manual mode.[1]
Notes
1. Information presented in Table 1 is from USB 2.0 Specification Tables 11-6.
2. Information presented in Table 2 is from USB 2.0 Specification 11-7.
Document #: 001-52934 Rev. *C
Page 6 of 27
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CY7C65621/31
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)[3]
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
3. NC and Rsvd are for CY7C65621 only.
Document #: 001-52934 Rev. *C
Page 7 of 27
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CY7C65621/31
Pin Description Table x
Table 3. Pin Assignments[4]
3
7
11
15
19
23
27
33
39
55
4
8
12
16
20
24
28
34
40
47
50
56
21
22
46
CY7C65631
Name
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
XIN
XOUT
RESET#
CY7C65621
Name
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
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
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
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
Pin
26
SPI Interface
25
SPI_CS
48
SPI_SCK
49
SPI_SD
Upstream Port
17
18
D–
D+
Document #: 001-52934 Rev. *C
Type Default
Description
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.
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. Other than this, 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).
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.
Page 8 of 27
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CY7C65621/31
Table 3. Pin Assignments[4] (continued)
CY7C65631
Name
Downstream Port 1
13
DD–[1]
14
DD+[1]
36
AMBER#[1]
Pin
CY7C65621
Name
Type Default
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
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 on the
CY7C65621/31
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 on the
CY7C65621/31
Power Switch Driver Output. Default is active LOW. Polarity
is controlled through EEPROM.
Note
4. 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 #: 001-52934 Rev. *C
Page 9 of 27
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CY7C65621/31
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 CY7C65621/31 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 CY7C65621/31 enumerates with the default
descriptor values as shown in the 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
0
1
2,3
4
5
6
7
8,9
10,11
12, 13
14
15
16
17
Full Speed
0x12
0x01
0x0110
0x09
0x00
0x00
0x40
0x04B4
0x6560
0x0915
0x00
0x00
0x00
0x01
High Speed
0x12
0x01
0x0200
0x09
0x00
0x01
0x40
0x04B4
0x6560
0x0915
0x00
0x00
0x00
0x01
Field Name
bLength
bDescriptorType
bcdUSB
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
wIdVendor
wIdProduct
wbcdDevice
iManufacturer
iProduct
iSerialNumber
bNumConfigurations
High Speed
0x09
0x02[5]/0x07[6]
0x0019
0x01
0x01
0x00
0xA0
0xE0
0x57[5]
Field Name
bLength
bDescriptorType
wTotalLength
bNumInterfaces
bConfigurationValue
iConfiguration
bmAttributes
Description
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
Configuration Descriptor
Byte
0
1
2
4
5
6
7
8
Full Speed
0x09
0x02[5]/0x07[6]
0x0019
0x01
0x01
0x00
0xA0
0xE0
0x28
Description
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
bMaxPower
Notes
5. Configured speed descriptor.
6. Other speed descriptor.
Document #: 001-52934 Rev. *C
Page 10 of 27
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CY7C65621/31
Interface Descriptor
Byte
0
1
2
3
4
5
6
7
8
Full Speed
0x09
0x04
0x00
0x00
0x01
0x09
0x00
0x00
0x00
High Speed
0x09
0x04
0x00
0x00
0x01
0x09
0x00
0x00
0x00
Field Name
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
Description
9 bytes
Interface_Descriptor
Endpoint Descriptor
Byte
Full Speed
High Speed
0
0x07
0x07
Field Name
Description
bLength
7 Bytes
1
0x05
0x05
bDescriptorType
Endpoint_Descriptor
2
0x81
0x81
bEndpointAddress
IN endpoint #1
bmAttributes
Interrupt
wMaxPacketSize
Maximum packet size
bInterval
Polling rate
3
0x03
0x03
4,5
0x0001
0x0001
6
0xFF
0x0C
Device Qualifier Descriptor
Byte
Full Speed
High Speed
0
0x0A
0x0A
bLength
Field Name
10 Bytes
bDescriptorType
Device_Qualifier
1
0x06
0x06
2,3
0x0200
0x0200
4
0x09
0x09
bDeviceClass
5
0x00
0x00
bDeviceSubClass
6
0x01
0x00
bDeviceProtocol
7
0x40
0x40
bMaxPacketSize0
8
0x01
0x01
bNumConfigurations
9
0x00
0x00
bReserved
Document #: 001-52934 Rev. *C
Description
bcdUSB
Page 11 of 27
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CY7C65621/31
Hub Descriptor
Byte
0
1
2
3,4
All Speed
0x09
0x29
0x04[7]
0x02
0x0089[7]
Field Name
bLength
bDescriptorType
bNbrPorts
wHubCharacteristics
bPwrOn2PwrGood
bHubContrCurrent
7
0x32[7]
0x28[7]
0xAE[7]
0x00[7]
8
0xFF[7]
bPortPwrCtrlMask
5
6
bDeviceRemovable
Description
9 bytes
Hub descriptor
Number of ports supported, CY7C65631.
Number of ports supported, CY7C65621.
b1, b0: Logical power switching mode
00: Ganged power switching (all ports’ power at once)
01: Individual port power switching (Default in CY7C65621/31)
b2: Identifies a compound device,
0: Hub is not part of a compound device (Default in CY7C65621/31),
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 over-current status (Default in
CY7C65621/31).
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 or
low speed downstream bus (Default in CY7C65621/31).
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 CY7C65621/31).
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
Note
7. This value is configured through the external EEPROM.
Document #: 001-52934 Rev. *C
Page 12 of 27
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CY7C65621/31
Configuration Options
Byte 0: 0xD2
Systems using CY7C65621/31 may 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 CY7C65621/31 can
communicate with SPI EEPROM that are either double byte
addressed or single byte with the 9th bit within the instruction
byte, such as the 24LC040 parts use. The 25LC080 EEPROM
uses the double byte address format, and therefore the
CY7C656xx can communicate with these parts. The '010s and
'020s use the same command format as is used to interface with
the ‘040. Therefore, these can also be used to interface with the
CY7C65621/31.
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
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.
Byte 5: Reserved
0xD0 Load
Byte 7: EnabledOvercurrentTimer[3:0],
DisabledOvercurrentTimer[3:0]
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 #: 001-52934 Rev. *C
Reserved
Byte 6: DID (MSB)]
Most Significant Byte of Device ID
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 sets 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 13 of 27
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CY7C65621/31
Byte 12: IllegalHubDescriptor, CompoundDevice, Full
speedOnly, 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 may be set to allow CY7C65621/31 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 #: 001-52934 Rev. *C
Factory
Fusible
X
X
X
X
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
Fusible
X
X
X
Byte 0: 0xD4
Needs to be programmed with 0xD4
Byte 1: VID (LSB)
X
Least Significant Byte of Vendor ID
Byte 2: VID (MSB)
Most Significant Byte of Vendor ID
X
X
Byte 3: PID (LSB)
Least Significant Byte of Product ID
Byte 4: PID (MSB)
X
X
Most Significant Byte of Product ID
Byte 5: Reserved
Reserved.
Byte 6: DID (MSB)
Most Significant Byte of Device ID
Page 14 of 27
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CY7C65621/31
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
speedOnly, 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 #: 001-52934 Rev. *C
that do not accept this, the IllegalHubDescriptor configuration
bit may be set to allow CY7C65621/31 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 over-current inputs are
active HIGH. If not set, the over-current 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 over-current 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’, over-current detection is enabled. If this bit (Bit 0) is set
to ‘1’, the hub reports over-current on a per-port basis. If set
to ‘0’, the hub reports over-current 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 will 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 15 of 27
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CY7C65621/31
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 would set 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 #: 001-52934 Rev. *C
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 16 of 27
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CY7C65621/31
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
GetOtherSpeedConfiguration
Descriptor
10000000B
0x06
0x0007
Zero or
Language ID
Descriptor
Length
Descriptor
GetConfiguration[8]
10000000B
0x08
0x0000
0x0000
0x0001
Configuration
Value
SetCongfiguration[8]
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
8. Only one configuration is supported in CY7C656xx.
Document #: 001-52934 Rev. *C
Page 17 of 27
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CY7C65621/31
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[9] 0 or 1
0x0000
0x0000
None
ClearPortFeature
00100011B
0x01
Feature
Byte 0: 0x00 0x0000
Selectors[9]
Byte 1: Port
1, 2, 8, 16, 17, 18, 19,
or 20
None
ClearPortFeature
00100011B
0x01
Feature Selectors[9] Byte 0: 22
Byte 1: Port
(PORT_INDICATOR)
None
SetHubFeature
00100000B
0x03
Feature
Selector[9]
0 or 1
0x0000
0x0000
SetPortFeature
00100011B
0x03
Feature
Selectors[9]
2, 4 or 8
Port
0x0000
None
SetPortFeature
00100011B
0x03
Feature
Selector[9] 21
(PORT_TEST)
Byte 0:
0x0000
Selectors[9]
1,2, 3, 4 or 5
Byte 1: Port
None
SetPortFeature
00100011B
0x03
Feature
Byte 0:
0x0000
Selector[9] 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
0x0000
Notes
9. Feature selector values for different features are presented in Table 7 on page 19.
10. Selector values for different features are presented in Table 9 on page 20.
Document #: 001-52934 Rev. *C
Page 18 of 27
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CY7C65621/31
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 length bytes of data being read 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 length bytes of data being written 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)[11]
PORT_TEST Mode Description
Selector Value
Test_J
1
Test_K
2
Test_SE0_NAK
3
Test_Packet
4
Test_Force_Enable
5
Note
11. Selector values for different features are presented in Table 8 on page 19.
Document #: 001-52934 Rev. *C
Page 19 of 27
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CY7C65621/31
Table 9. Port Indicator Selector for Feature Selector PORT_INDICATOR (0x22)
Selector Value
Port Indicator Mode
Color set automatically as shown in Table 1 on page 6
Port Indicator Color
0
Automatic mode
Amber
1
Manual mode
Green
2
Manual mode
Off
3
Manual mode
Upstream USB Connection
The following is a schematic of the USB upstream connector.
Figure 2. USB Upstream Port Connection
BUSPOWER
VCC
2.2 μF
10 V
D–
D–
D+
D+
100 kΩ
GND
SHELL
Downstream USB Connections
The following is a schematic of the USB downstream connector.
Figure 3. USB Downstream Port Connection
VCC
PWRx
150 µF
10 V
0.01 µF DD–[X]
D–
DD+[X]
D+
GND
SHELL
LED Connections
The following is a schematic of the LED circuitry.
Figure 4. USB Downstream Port Connection
3.3 V
GREEN#[x]
AMBER#[x]
Document #: 001-52934 Rev. *C
680Ω
680Ω
Page 20 of 27
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CY7C65621/31
System Block Diagram
Figure 5. Sample Schematic for 4-Port Self Powered Configuration
5V
VBUSPOWER
VBUS
VCC
D– 2.2 μF
D–
D+
DsPWR4
OVR1
10 V
D+
DsPWR1
PWR1
15 kΩ
150 kΩ
GND
Power
PWR2 Management
DsPWR3
OVR2
PWR3
DsPWR2
OVR3
PWR4
OVR4
SHELL
150 μF
10 V
DD–[1]
DD+[1]
0.01 μF
VCC
D–
D+
GND
SHELL
DsPWR1
3.3 V
GREEN#[1]
AMBER#[1]
680Ω
680Ω
SPI_SD
DO
SPI_SCK
SPI_CS
DsPWR2
DI
CLK
SPI_SD
150 μF
10 V
CS
SPI
EEPROM
DD–[2]
DD+[2]
0.01 μF
VCC
D–
D+
GND
SHELL
24 MHz
3.3 V
3.3 V
3.3 V
GREEN#[2]
12 pF
12 pF
XIN
SELFPWR
VBUSPOWER
3.3 V
DsPWR3
VBUSPOWER
100K
RESET
0.1μF
D–
D-
D+
D+
DD–[1]
DD-[1]
DD+[1]
DD+[1]
DD–[2]
DD-[2]
DD+[2]
DD+[2]
DD-[3]
DD+[3]
DD–[4]
DD-[4]
DD+[4]
DD+[4]
HX2LP Lite
Document #: 001-52934 Rev. *C
GREEN[1]
AMBER[1]
GREEN[1]
AMBER[1]
GREEN[2]
AMBER[2]
GREEN[2]
AMBER[2]
GREEN[3]
AMBER[3]
GREEN[3]
AMBER[3]
GREEN[4]
AMBER[4]
PWR1
OVR1
PWR2
OVR2
PWR3
OVR3
PWR4
OVR4
SPI_CS
SPI_SCK
SPI_SD
GND1
GND2
GND3
GND4
GND5
GND6
GND7
GND8
GND9
GND10
GND11
GND12
DD–[3]
DD+[3]
680Ω
XOUT
10K
VCC1
VCC2
VCC3
VCC4
VCC5
VCC6
VCC7
VCC8
VCC9
VCC10
VCC11
AMBER#[2]
680Ω
GREEN[4]
AMBER[4]
PWR1
OVR1
PWR2
OVR2
PWR3
OVR3
PWR4
OVR4
SPI_CS
150 μF
10 V
DD-[3]
DD+[3]
0.01 μF
VCC
D–
D+
GND
SHELL
3.3 V
GREEN#[3]
AMBER#[3]
680Ω
680Ω
DsPWR4
150 μF
10 V
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 21 of 27
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CY7C65621/31
Electrical Characteristics
Absolute Maximum Ratings
Operating Conditions
Storage temperature ................................ –65 °C to +150 °C
TA (Ambient temperature under bias)
Ambient temperature with power applied:
Commercial
Commercial
..................................... 0 °C to +70 °C
Supply voltage ..........................................+3.15 V to +3.45 V
Supply voltage to ground potential ..............–0.5 V to +4.0 V
Ground voltage ................................................................. 0 V
DC voltage applied to outputs
in high Z State...................................... –0.5 V to VCC + 0.5 V
Oscillator or Crystal Frequency (FOSC)...... 24 MHz ± 0.05%
......................... 0 °C to +70 °C
parallel resonant, 12 pF load capacitance, 0.5 mW
Power dissipation (4 HS ports) ..................................... 0.9 W
Static discharge voltage........................................... > 2000 V
Maximum output sink current per I/O .......................... 10 mA
DC Electrical Characteristics
Parameter
VCC
Description
Conditions
Supply voltage
Min
Typ
Max
Unit
3.15
3.3
3.45
V
18
V/ms
5.25
V
VCC RampUp Ramp rate on VCC
VIH
Input high voltage
VIL
Input low voltage
Il
Input leakage current
VOH
Output voltage high
IOUT = 4 mA
VOL
Output low voltage
IOUT = –4 mA
IOH
IOL
CIN
Input pin capacitance
ISUSP
Suspend current
ICC
2
–0.5
0 < VIN < VCC
0.8
V
±10
μA
2.4
V
0.4
V
Output current high
4
mA
Output current low
4
mA
10
pF
μA
80
Supply Current
4 Active Ports
2 Active Ports
No Active Ports
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 #: 001-52934 Rev. *C
Page 22 of 27
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CY7C65621/31
Table 10. Serial Peripheral Interface
Parameter
Description
Conditions
Min
Typ
Clock rise/fall time
Clock frequency
Max
Unit
500
ns
250
KHz
Data setup time
50
ns
Hold time
100
ns
Reset period
1.9
ms
Ordering Information
Ordering Code
Package Type
CY7C65621-56LTXC
56-pin QFN 2-Port
CY7C65621-56LTXCT
56-pin QFN 2-Port tape and reel
CY7C65631-56LTXC
56-pin QFN 4-Port
CY7C65631-56LTXCT
56-pin QFN 4-Port tape and reel
CY4606
CY7C65631 USB 2.0 4-Port hub reference design kit
CY4605
CY7C65621 USB 2.0 2-Port hub reference design kit
Ordering Code Defintions
CY
7
C
65
621, 631
LTX
(C, I)
T
Tape and Reel
Thermal rating:
C = Commercial; I = Industrial
Package type:
LTX = QFN (Sawn Type) Pb-free
621 = Two port hub
631= Four port hub
Family code: 65 = USB hubs
Technology code: C = CMOS
Marketing code: 7 = Cypress products
Company ID: CY = Cypress
Document #: 001-52934 Rev. *C
Page 23 of 27
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CY7C65621/31
Package Diagram
The CY7C65621/31 is available in a space saving 56-pin QFN (8 × 8 mm).
Figure 6. 56-Pin QFN (8 × 8 × 0.90 mm)
51-85187 *E
Document #: 001-52934 Rev. *C
Page 24 of 27
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CY7C65621/31
Acronyms
Document Conventions
Table 11. Acronyms Used in this Document
Units of Measure
Acronym
Description
Table 12. Units of Measure
ASIC
application specific integrated circuit
CPU
central processing unit
KHz
kilohertz
DSP
digital signal processor
MHz
megahertz
ECC
error correcting codes
uA
microamperes
GPIF
general programmable interface
mA
milliamperes
GPIO
general purpose I/O
ms
milliseconds
IC
integrated circuit
mW
milliwatts
ICE
in-circuit emulator
ns
nanosecond
I/O
input/output
pF
picoFarads
LSb
least-significant bit
V
volts
LVD
low voltage detect
MSb
most-significant bit
PLL
phase locked loop
PCB
printed circuit board
POR
power on reset
PSoC®
Programmable System-on-Chip
SCL
serial clock
SDA
serial data line
SPI
serial peripheral interface
RAM
random access memory
USB
universal serial bus
USB-IF
USB implementor’s forum
Document #: 001-52934 Rev. *C
Symbol
Unit of Measure
Page 25 of 27
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CY7C65621/31
Document History Page
Document Title: CY7C65621/31 EZ-USB HX2LP Lite™ Low Power USB 2.0 Hub Controller Family
Document Number: 001-52934
Revision
ECN
Orig. of
Change
Submission
Date
Description of Change
**
2683316
OGC/PYRS
04/15/2009
New Data Sheet for CY7C65621/31
*A
2937054
STVC
05/25/2010
Rearranged parts under Ordering Information in alphabetical order.
Deleted Figure 7: QFN 8x8mm LF56A with 6.1x6.1 EPAD diagram
Updated Package Diagram.
Updated description for Pins 51 and 53.
Updated links in Sales, Solutions, and Legal Information.
Updated table formats.
*B
2953993
DSG
06/16/2010
Removed inactive parts from Ordering Information.
*C
3180356
ODC
02/23/2011
Removed automotive references from the datasheet since the parts are no
longer active.This includes “Automotive AEC grade option (–40 °C to +85 °C)”
in Features section and “Automotive –40 °C to +85 °C" which appears twice
in Electrical characteristics section.
Added ordering code definitions and units of measure table.
Template updates.
Document #: 001-52934 Rev. *C
Page 26 of 27
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CY7C65621/31
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
closest to you, visit us at Cypress Locations.
Products
Automotive
Clocks & Buffers
Interface
Lighting & Power Control
PSoC® Solutions
cypress.com/go/automotive
cypress.com/go/clocks
psoc.cypress.com/solutions
cypress.com/go/interface
PSoC 1 | PSoC 3 | PSoC 5
cypress.com/go/powerpsoc
cypress.com/go/plc
Memory
Optical & Image Sensing
PSoC
Touch Sensing
USB Controllers
Wireless/RF
cypress.com/go/memory
cypress.com/go/image
cypress.com/go/psoc
cypress.com/go/touch
cypress.com/go/USB
cypress.com/go/wireless
© Cypress Semiconductor Corporation, 2009-2011. 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 #: 001-52934 Rev. *C
Revised February 23, 2011
Page 27 of 27
Windows is a registered trademark of Microsoft Corporation. TetraHub and EZ-USB HX2LP Lite 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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