Cypress CY4602 Tetrahub high-speed usb hub controller Datasheet

CY7C65640
TetraHub™ High-Speed USB
Hub Controller
Cypress Semiconductor Corporation
Document #: 38-08019 Rev. *E
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3901 North First Street
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San Jose, CA 95134
•
408-943-2600
Revised June 22, 2004
CY7C65640
TABLE OF CONTENTS
1.0 TETRAHUB™ FEATURES ............................................................................................................. 5
2.0 INTRODUCTION ............................................................................................................................. 6
2.1
2.2
2.3
2.4
2.5
TetraHub Architecture ................................................................................................................6
USB Serial Interface Engine (SIE) ............................................................................................. 6
Hub Controller ............................................................................................................................ 7
Hub Repeater ............................................................................................................................. 7
Transaction Translator ............................................................................................................... 7
3.0 APPLICATIONS .............................................................................................................................. 7
4.0 FUNCTIONAL OVERVIEW ............................................................................................................. 7
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
System Initialization ................................................................................................................... 7
Enumeration ............................................................................................................................... 7
Multiple Transaction Translator Support .................................................................................... 8
Downstream Ports ..................................................................................................................... 8
Upstream Port ............................................................................................................................ 8
Power Switching ........................................................................................................................ 8
Over-current Detection ............................................................................................................... 8
Port Indicators ............................................................................................................................ 9
5.0 PIN CONFIGURATION .................................................................................................................10
6.0 PIN DESCRIPTION TABLE ..........................................................................................................11
7.0 DEFAULT DESCRIPTORS ...........................................................................................................13
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
Device Descriptor .....................................................................................................................13
Configuration Descriptor ..........................................................................................................13
Interface Descriptor ..................................................................................................................13
Endpoint Descriptor .................................................................................................................14
Interface Descriptor[3] ..............................................................................................................14
Endpoint Descriptor[3] .............................................................................................................14
Device Qualifier Descriptor ......................................................................................................14
Hub Descriptor .........................................................................................................................15
8.0 CONFIGURATION OPTIONS .......................................................................................................16
8.1 Default – 0xD0 Load ................................................................................................................16
8.2 Configured – 0xD2 Load ..........................................................................................................16
9.0 SUPPORTED USB REQUESTS ...................................................................................................18
9.1 Device Class Commands .........................................................................................................18
9.2 Hub Class Commands .............................................................................................................18
10.0 UPSTREAM USB CONNECTION ...............................................................................................21
11.0 DOWNSTREAM USB CONNECTIONS ......................................................................................21
12.0 LED CONNECTIONS ..................................................................................................................21
13.0 SAMPLE SCHEMATIC ...............................................................................................................22
14.0 ELECTRICAL CHARACTERISTICS ...........................................................................................23
14.1 Absolute Maximum Ratings ...................................................................................................23
14.2 Operating Conditions .............................................................................................................23
14.3 DC Electrical Characteristics .................................................................................................23
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CY7C65640
TABLE OF CONTENTS (continued)
14.4 AC Electrical Characteristics ..................................................................................................24
14.4.1 Serial Peripheral Interface ............................................................................................................ 24
14.4.2 Eye Diagram ................................................................................................................................24
15.0 ORDERING INFORMATION .......................................................................................................25
16.0 PACKAGE DIAGRAMS ..............................................................................................................25
16.1 Quad Flat Package No Leads (QFN) Package Design Notes ...............................................25
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CY7C65640
LIST OF FIGURES
Figure 2-1. Block Diagram ..................................................................................................................... 6
Figure 5-1. 56-pin Quad Flat Pack No Leads (8 mm x 8 mm) ............................................................. 10
Figure 10-1. USB Upstream Port Connection ...................................................................................... 21
Figure 11-1. USB Downstream Port Connection ................................................................................. 21
Figure 12-1. USB Downstream Port Connection ................................................................................. 21
Figure 13-1. Sample Schematic .......................................................................................................... 22
Figure 16-1. Cross-section of the Area Underneath the QFN Package .............................................. 26
Figure 16-2a. Plot of the Solder Mask (White Area) ............................................................................ 26
Figure 16-2b. X-Ray Image of the Assembly ....................................................................................... 26
LIST OF TABLES
Table 4-1.
Table 4-2.
Table 6-1.
Table 9-1.
Table 9-2.
Table 9-3.
Table 9-5.
Table 9-4.
Automatic Port State to Port Indicator Color Mapping .......................................................... 9
Port Indicator Color Definitions in Manual Mode .................................................................. 9
Pin Assignments .................................................................................................................11
Device Class Requests ......................................................................................................18
Hub Class Requests ...........................................................................................................18
Hub Class Feature Selector ...............................................................................................19
Port Indicator Selector for Feature Selector PORT_INDICATOR (0x22) ...........................20
Test Mode Selector for Feature Selector PORT_TEST (0x21) ..........................................20
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CY7C65640
1.0
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TetraHub™ Features
USB 2.0 hub
Four downstream ports
Multiple transaction translators – one per downstream port for maximum performance
VID, PID and DID configured from external SPI EEPROM
24-MHz external crystal
Small package—Quad Flat Pack, no leads (QFN)
Integrated upstream pull-up resistor
Integrated downstream pull-down resistors for all downstream ports
Integrated upstream and downstream series termination resistors
Configurable with external SPI EEPROM
— Number of Active Ports
— Number of Removable Ports
— Maximum Power
— Hub Controller Power
— Power-On Timer
— Overcurrent Timer
— Disable Overcurrent Timer
— Compound Device
— Enable Full Speed Only
— Disable Port Indicators
— Gang Power switching
— Enable Single TT Mode Only
— Enable NoEOPatEOF1
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CY7C65640
2.0
Introduction
Cypress’s TetraHub is a high-performance self-powered Universal Serial Bus (USB) 2.0 hub. The Tetra architecture provides
four downstream USB ports, with a Transaction Translator (TT) for each port, making it the highest-performance hub possible.
This single-chip device incorporates one upstream and four downstream USB transceivers, a Serial Interface Engine (SIE), USB
Hub Controller and Repeater, and four TTs. It is suitable for standalone hubs, motherboard hubs, and monitor hub applications.
Being a fixed-function USB device, there is no risk or added engineering effort required for firmware development. The developer
does not need to write any firmware for their design. The CY4602 Tetrahub USB 2.0 4-port Hub Reference Design Kit provides
all materials and documents needed to move rapidly into production. The reference design kit includes board schematics, bill of
materials, Gerber files, Orcad files, key application notes, and product description.
2.1
TetraHub Architecture
Figure 2-1 is a block diagram of the TetraHub Architecture.
D+
D–
24 MHz
Crystal
High-Speed
USB Control Logic
Serial
Interface
Engine
USB 2.0 PHY
PLL
SPI_SCK
SPI_SD
SPI Communication
Block
SPI_CS
USB Upstream Port
Transaction Translator (X4)
Hub Repeater
TT RAM
Routing Logic
USB Downstream Port 2
USB Downstream Port 1
USB 2.0 Port Power
Control
PHY
D+
D–
Port
Status
PWR#[1] OVR#[1] LED
USB 2.0 Port Power
Control
PHY
D+
D–
Port
Status
PWR#[2] OVR#[2] LED
USB Downstream Port 3
USB 2.0 Port Power
Control
PHY
D+
D–
Port
Status
PWR#[3] OVR#[3] LED
USB Downstream Port 4
USB 2.0 Port Power
Control
PHY
D+
D–
Port
Status
PWR#[4] OVR#[4] LED
Figure 2-1. Block Diagram
2.2
USB Serial Interface Engine (SIE)
The SIE allows the CY7C65640 to communicate with the USB host through the USB repeater component of the hub. The SIE
handles the following USB bus activity independently of the Hub Control Block:
• Bit stuffing/unstuffing
• Checksum generation/checking
• ACK/NAK/STALL
• TOKEN type identification
• Address checking.
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CY7C65640
2.3
Hub Controller
The Hub Control Block does the following protocol handling at a higher level:
• Coordinate enumeration by responding to SETUP packets
• Fill and empty the FIFOs
• Suspend/Resume coordination
• Verify and select DATA toggle values
• Port power control and over-current detection.
The Hub Controller provides status and control and permits host access to the hub.
2.4
Hub Repeater
The Hub Repeater manages the connectivity between upstream and downstream facing ports that are operating at the same
speed. It supports full-/low-speed connectivity and high-speed connectivity. Per 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.
2.5
Transaction Translator
The TT basically translates data from one speed to another. A TT takes high-speed split transactions and translates them to
full-/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-/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 section. If a low-/full-speed
device is connected to the hub operating at high speed, the data transfer route includes the transaction translator. If a high-speed
device is connected to this high-speed hub the route only includes the repeater and no transaction translator since the device
and the hub are in conformation with respect to their data transfer speed. When the hub is operating at full speed (the upstream
port is connected to a full-speed host controller), a high-speed peripheral will not operate at its full capability. These devices will
only work at 1.1 speed. Full- and low-speed devices connected to this hub will operate at their 1.1 speed.
3.0
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Applications
Standalone Hubs
Motherboard Hubs
Monitor Hub applications
External Personal Storage Drives
Port Replicators
Portable Drive
Docking Stations
4.0
Functional Overview
The Cypress TetraHub USB 2.0 Hub is a high-performance, low-system-cost solution for USB. The TetraHub USB 2.0 Hub
integrates 1.5k upstream pull-up resistors for full-speed operation and all downstream 15k pull-down resistors as well as 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.
4.1
System Initialization
On power-up, the TetraHub will read an external SPI EEPROM for configuration information. At the most basic level, this EEPROM
will have 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 section 8.0 for more details.
After reading the EEPROM, if BUSPOWER (connected to up-stream VBus) is HIGH, TetraHub will enable the pull-up resistor on
the D+ to indicate that it is connected to the upstream hub, after which a USB Bus Reset is expected. During this reset, TetraHub
will initiate a chirp to indicate that it is a high-speed peripheral. In a USB 2.0 system, the upstream hub will respond with a chirp
sequence, and TetraHub will be 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 will be seen, and TetraHub will operate as a normal 1.x hub (operating at full speed).
4.2
Enumeration
After a USB Bus Reset, TetraHub is in an unaddressed, unconfigured state (configuration value set to 0). During the enumeration
process, the host will set the hub's address and configuration by sending a SetCongfiguration request. Changing the hub address
will restore it to an unconfigured state.
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CY7C65640
For high-speed multi-TT support, the host must also set the alternate interface setting to 1 (the default mode is single-TT). Once
the hub is configured, the full hub functionality is available.
4.3
Multiple Transaction Translator Support
After TetraHub is configured in a high-speed system, it will be in Single TT mode. The host may then set the hub into Multiple TT
mode by sending a SetInterface command. In Multiple TT mode, each full-speed port is handled independently and thus has a
full 12-Mbps bandwidth available. In Single TT mode, all traffic from the host destined for full- or low-speed ports will be forwarded
to all of those ports. This means that the 12-Mbps bandwidth is shared by all full- and low-speed ports.
4.4
Downstream Ports
TetraHub supports a maximum of four downstream ports, each of which may be marked as usable or removable in the extended
configuration (0xD2 EEPROM load, see section 8.2). Downstream D+ and D– pull-down resistors are incorporated in TetraHub
for each port. Prior to the hub being configured, the ports are driven SE0 (Single Ended Zero, where both D+ and D– are driven
low) and are set to the unpowered state. Once the hub is configured, the ports are not driven, and the host may power the ports
by sending a SetPortPower command to 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 hub back to the host through the Status Change Endpoint (endpoint 1). Upon
receipt of SetPortReset command from the host, the hub will
• Drive SE0 on the corresponding port
• Put the port in an enabled state
• Enable the green port indicator for that port (if not previously overridden by the host)
• Enable babble detection once the port is enabled.
Babble consists of either unterminated traffic from a downstream port (or loss of activity), or a non-idle condition on the port after
EOF2. If babble is detected on an enabled port, that port will be disabled. A ClearPortEnable command from the host will also
disable the specified port.
Downstream ports can be individually suspended by the host with the SetPortSuspend command. If the hub is not suspended,
any resume will be confined to that individual port and reflected to the host through a port change indication in the Hub Status
Change Endpoint. If the hub is suspended, a resume on this port will be forwarded to the host, but other resume events will not
be seen on that port. The host may resume the port by sending a ClearPortSuspend command.
4.5
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 monitoring activity prevents propagation of erroneous indications in the upstream direction. In particular, 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. This allows the Hub to only disconnect the offensive port
on detecting a babble from it.
4.6
Power Switching
TetraHub 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 command for that port. The power switching and over-current detection of downstream
ports is managed by control pins connected to an external power switch device. PWR [n]# output pins of the CY7C65640 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.)
4.7
Over-current Detection
Over-current detection includes timed detection of 8 ms by default. This parameter is configured from the external EEPROM in
a range of 0 ms to 15 ms for both an enabled port and a disabled port individually. Detection of over-current on downstream ports
is managed by control pins connected to an external power switch device.
The OVR[n]# pins of the CY7C65640 series are connected to the respective external power switch's port over-current indication
(output) signals. Upon detecting an over-current condition, the hub device reports the over-current condition to the host and
disables the PWR# output to the external power device.
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CY7C65640
4.8
Port Indicators
The USB 2.0 port indicators are also supported directly by TetraHub. As per the specification, each downstream port of the hub
supports an optional 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 TeraHub descriptor specifies that port indicators are supported
(wHubCharacteristics, bit 7 is set). If port indicators are not included in the hub, this should be disabled by the EEPROM.
Each port indicator is strategically located directly on the opposite edge of the port which it is associated with. The indicator
provides two colors: green and amber. This is 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 are used to provide information to the user. The significance of
the color of the LED depend on the operational mode of the TetraHub. There are two modes of operation for the TetraHub port
indicators: automatic and manual.
On power-up the TeraHub defaults to Automatic Mode, where the color of the Port Indicator (Green, Amber, Off) indicates the
functional status of the TetraHub port. In Automatic Mode, TetraHub will turn on the green LED whenever the port is enabled and
the amber LED when it has had an overcurrent condition 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 4-1 below identifies the mapping of color to port state in Automatic
Mode.
Table 4-1. Automatic Port State to Port Indicator Color Mapping
Downstream Facing Hub Port State
Port
Switching
Disconnected, Disabled, Not
Configured, Resetting, Testing
Powered Off
Enabled, Transmit,
or TransmitR
Suspended, Resuming,
SendEOR, Restart_E /S
With
Off or Amber if due to an
Overcurrent Condition
Off
Green
Off
Without
Off
Off or Amber if due to an
Overcurrent Condition
Green
Off
In manual mode, the indicators are under the control of the host, which can turn on one of the LEDs, or leave them off. This is
done by a system software USB Hub class request. Blinking of the LEDs is supported in Manual Mode. The port indicators allow
the user to intervene on any error detection. For example, when babble is detected on plugging in a defective device, or on
occurrence of an overcurrent condition, the port indicators corresponding to the downstream port will blink green or only light the
amber LED, respectively. Table 4-2 below displays the color definition of the indicators when TetraHub is in Manual Mode.
Table 4-2. 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: Information presented in Table 4-1 and Table 4-2 is from USB 2.0 specification Tables 11-6 and 11-7, respectively.
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CY7C65640
DD–[4]
DD+[4]
VCC
SPI_SCK
50
49
48
47
46
45
44
GREEN#[4]
SPI_SD
51
AMBER#[4]
GND
52
VCC
OVR#[4]
53
RESET
PWR#[4]
54
GND
OVR#[3]
55
PWR#[3]
56
VCC
Pin Configuration
GND
5.0
43
1
42 AMBER#[3]
41 GREEN#[3]
2
40
3
GND 4
GND
39 VCC
DD–[3]
5
38 AMBER#[2]
DD+[3]
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
BUSPOWER
17
D+
16
GND
VCC
15
D–
29 PWR#[1]
Figure 5-1. 56-pin Quad Flat Pack No Leads (8 mm x 8 mm)
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CY7C65640
6.0
Pin Description Table
Table 6-1 below displays the pin assignments for the CY7C65640.
Table 6-1. Pin Assignments
Pin
Name
Type
Default
Description
3
VCC
Power
N/A
VCC. This signal provides power to the chip.
7
VCC
Power
N/A
VCC. This signal provides power to the chip.
11
VCC
Power
N/A
VCC. This signal provides power to the chip.
15
VCC
Power
N/A
VCC. This signal provides power to the chip.
19
VCC
Power
N/A
VCC. This signal provides power to the chip.
23
VCC
Power
N/A
VCC. This signal provides power to the chip.
27
VCC
Power
N/A
VCC. This signal provides power to the chip.
33
VCC
Power
N/A
VCC. This signal provides power to the chip.
39
VCC
Power
N/A
VCC. This signal provides power to the chip.
45
VCC
Power
N/A
VCC. This signal provides power to the chip.
55
VCC
Power
N/A
VCC. This signal provides power to the chip.
4
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
8
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
12
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
16
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
20
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
24
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
28
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
34
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
40
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
47
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
50
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
56
GND
Power
N/A
GND. Connect to Ground with as short a path as possible.
21
XIN
Input
N/A
24-MHz Crystal IN or External Clock Input.
22
XOUT
Output
N/A
24-MHz Crystal OUT.
46
RESET#
Input
N/A
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.
26
BUSPOWER
Input
N/A
VBUS. Connect to the VBUS pin of the upstream connector. This signal
indicates to the hub that it is in a powered state, and may enable the D+ pull-up
resistor to indicate a connection. (The hub will do so after the external
EEPROM is read, unless it is put into a high-speed mode by the upstream
hub). The hub can not be bus powered, and the VBUS signal must not be
used as a power source.
O
O
SPI Chip Select. Connect to CS pin of the EEPROM.
SPI INTERFACE
25
SPI_CS
48
SPI_SCK
O
O
SPI Clock. Connect to EEPROM SCK pin.
49
SPI_SD
I/O/Z
Z
SPI Dataline Connect to GND with 15-KΩ resistor and to the Data I/O pins
of the EEPROM.
UPSTREAM PORT
17
D–
I/O/Z
Z
Upstream D– Signal.
18
D+
I/O/Z
Z
Upstream D+ Signal.
I/O/Z
Z
Downstream D– Signal.
DOWNSTREAM PORT 1
13
DD–[1]
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CY7C65640
Table 6-1. Pin Assignments (continued)
Pin
Name
Type
Default
14
DD+[1]
I/O/Z
Z
Description
Downstream D+ Signal.
36
AMBER#[1]
O
1
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
35
GREEN#[1]
O
1
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
30
OVR#[1]
Input
1
Overcurrent Condition Detection Input. Active LOW.
29
PWR#[1]
O/Z
Z
Power Switch Driver Output. Active LOW.
DD–[2]
I/O/Z
Z
Downstream D– Signal.
DOWNSTREAM PORT 2
9
10
DD+[2]
I/O/Z
Z
Downstream D+ Signal.
38
AMBER#[2]
O
1
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
37
GREEN#[2]
O
1
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
32
OVR#[2]
Input
1
Overcurrent Condition Detection Input. Active LOW.
31
PWR#[2]
O/Z
Z
Power Switch Driver Output. Active LOW.
DOWNSTREAM PORT 3
5
DD–[3]
I/O/Z
Z
Downstream D– Signal.
6
DD+[3]
I/O/Z
Z
Downstream D+ Signal.
42
AMBER#[3]
O
1
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
41
GREEN#[3]
O
1
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
53
OVR#[3]
Input
1
Overcurrent Condition Detection Input. Active LOW.
54
PWR#[3]
O/Z
Z
Power Switch Driver Output. Active LOW.
DD–[3]
I/O/Z
Z
Downstream D– Signal.
DOWNSTREAM PORT 4
1
2
DD+[3]
I/O/Z
Z
Downstream D+ Signal.
44
AMBER#[3]
O
1
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
43
GREEN#[3]
O
1
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
51
OVR#[3]
Input
1
Overcurrent Condition Detection Input. Active LOW.
52
PWR#[3]
O/Z
Z
Power Switch Driver Output. Active LOW.
Unused port DD+/DD– lines can be left floating. The port power, amber, and green LED pins should be left unconnected, and the
overcurrent pin should be tied HIGH. The overcurrent pin is an input and it should not be left floating.
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CY7C65640
7.0
Default Descriptors
7.1
Device Descriptor
The standard device descriptor for TetraHub is based on the VID, PID, and DID found in the SPI EEPROM. This VID/PID/DID in
the EEPROM will overwrite the default VID/PID/DID. If no EEPROM is used, the TetraHub will enumerate with the default
descriptor values as shown below.
Byte
Full Speed
High Speed
0
0x12
0x12
1
0x01
0x01
2,3
0x0200
0x0200
4
0x09
5
0x00
6
7
Field Name
Description
bLength
18 Bytes
bDescriptorType
DEVICE_DESCRIPTOR
bcdUSB
USB specification 2.0
0x09
bDeviceClass
HUB
0x00
bDeviceSubClass
None
0x00
0x02
bDeviceProtocol
None
0x40
0x40
bMaxPacketSize0
64 bytes
8,9
0x04B4
0xx04B4
wIdVendor
VID (overwritten by what is defined in EEPROM)
10,11
0x6560
0x6560
wIdProduct
PID (overwritten by what is defined in EEPROM)
12, 13
0x0007
0x0007
wbcdDevice
DID (overwritten by what is defined in EEPROM)
14
0x00
0x00
iManufacturer
No manufacturer string supported
15
0x00
0x00
iProduct
No product string supported
16
0x00
0x00
iSerialNumber
No serial string supported
17
0x01
0x01
bNumConfigurations
One configuration supported
7.2
Configuration Descriptor
Byte
Full Speed
High Speed
Field Name
0
0x09
0x09
bLength
9 Bytes
1
0x02
0x02
bDescriptorType
CONFIG_DESCRIPTOR
2
0x0019
0x0029[1]
4
0x01
0x01
wTotalLength
Length of all other descriptors
bNumInterfaces
1
The configuration to be used
5
0x01
0x01
bConfigurationValue
6
0x00
0x00
iConfiguration
7
0xE0
0xE0
bmAttributes
8
0x32
0x32[2]
bMaxPower
7.3
Description
Interface Descriptor
Byte
Full Speed
High Speed
Field Name
Description
0
0x09
0x09
bLength
9 Bytes
1
0x04
0x04
bDescriptorType
INTERFACE_DESCRIPTOR
2
0x00
0x00
bInterfaceNumber
3
0x00
0x00
bAlternateSetting
4
0x01
0x01
bNumEndpoints
5
0x09
0x09
bInterfaceClass
6
0x00
0x00
bInterfaceSubClass
7
0x00
0x01
bInterfaceProtocol
8
0x00
0x00
iInterface
Notes:
1. This value is reported as 0x19 if the hub is configured in Single-TT mode.
2. This value is configured through the External EEPROM.
Document #: 38-08019 Rev. *E
Page 13 of 27
CY7C65640
7.4
Endpoint Descriptor
Byte
Full Speed
High Speed
0
0x07
0x07
Field Name
bLength
Description
7 Bytes
1
0x05
0x05
bDescriptorType
ENDPOINT_DESCRIPTOR
2
0x81
0x81
bEndpointAddress
IN Endpoint #1
3
0x03
0x03
4,5
0x0001
0x0001
6
0xFF
0x0C
bmAttributes
Interrupt
wMaxPacketSize
Maximum Packet Size
bInterval
Polling Rate
Interface Descriptor[3]
7.5
I
Byte
Full Speed
High Speed
0
N/A
0x09
bLength
Field Name
9 Bytes
Description
1
N/A
0x04
bDescriptorType
INTERFACE_DESCRIPTOR
2
N/A
0x00
bInterfaceNumber
Interface Descriptor Index
3
N/A
0x01
bAlternateSetting
Alternate Setting for the Interface
4
N/A
0x01
bNumEndpoints
Number of Endpoints Defined
5
N/A
0x09
bInterfaceClass
Interface Class
6
N/A
0x00
bInterfaceSubClass
Interface Sub-Class
7
N/A
0x02
bInterfaceProtocol
Interface Protocol
8
N/A
0x00
bInterface
Interface String Index
Endpoint Descriptor[3]
7.6
Byte
Full Speed
High Speed
0
N/A
0x07
bLength
Field Name
7 Bytes
Description
1
N/A
0x05
bDescriptorType
ENDPOINT_DESCRIPTOR
2
N/A
0x81
bEndpointAddress
IN Endpoint #1
bmAttributes
Interrupt
wMaxPacketSize
Maximum Packet Size
bInterval
Polling Rate
3
N/A
0x03
4,5
N/A
0x0001
6
N/A
0x0C
7.7
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
0x02
0x00
bDeviceProtocol
7
0x40
0x40
bMaxPacketSize0
8
0x01
0x01
bNumConfigurations
9
0x00
0x00
bReserved
Description
bcdUSB
Note:
3. If TetraHub is configured for single-TT only (from the external EEPROM), this descriptor is not present.
Document #: 38-08019 Rev. *E
Page 14 of 27
CY7C65640
7.8
Hub Descriptor
Byte
All Speeds
0
0x09
bLength
9 Bytes
1
0x29
bDescriptorType
HUB Descriptor
2
0x04[4]
bNbrPorts
Number of ports supported
wHubCharacteristics
b1, b0: Logical Power Switching Mode
00: Ganged power switching (all ports’ power at once)
01: Individual port power switching (Default in TetraHub)
3,4
0x0089
[4]
Field Name
Description
b2: Identifies a Compound Device,
0: Hub is not part of a compound device (Default in TetraHub),
1: Hub is part of a compound device.
b4, b3: Over-current 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 TetraHub).
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 8 FS bit times of inter transaction gap on a
full-/low-speed downstream bus (Default in TetraHub).
01: TT requires at most 16 FS bit times.
10: TT requires at most 24 FS bit times.
11: TT requires at most 32 FS bit times.
b7: Port Indicators Supported,
0: Port Indicators are not supported on its downstream facing ports and
the PORT_INDICATOR request has no effect.
1: Port Indicators are supported on its downstream facing ports and the
PORT_INDICATOR request controls the indicators. See Section 4 and 9
(Default in TetraHub).
b15, ..b8: Reserved
5
0x32[4]
bPwrOn2PwrGood
Time from when the port is powered to when the power is good on that port
6
0x64
[4]
bHubContrCurrent
Maximum current requirement for the Hub Controller
7
0x00[4]
bDeviceRemovable
Indicates if the port has a removable device attached
8
[4]
bPortPwrCtrlMask
Required for compatibility with software written for 1.0 compliant devices
0xFF
Note:
4. This value is configured through the External EEPROM.
Document #: 38-08019 Rev. *E
Page 15 of 27
CY7C65640
8.0
Configuration Options
Systems using TetraHub must have an external EEPROM in order for the device to have a unique VID, PID, and DID. The
TetraHub can talk to SPI EEPROM that are double byte addressable only. TetraHub uses the command format from the '040
parts. The TetraHub cannot talk to ‘080 EEPROM parts, as the read command format used for talking to ‘080 is not the same as
‘040. The '010s and '020s uses the same command format as used to interface with the ‘040 and hence these can also be used
to interface with the TetraHub.
8.1
Default – 0xD0 Load
When used in default mode, 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
8.2
Value
0
0xD0
1
VID (LSB)
2
VID (MSB)
3
PID (LSB)
4
PID (MSB)
5
DID (LSB)
6
DID (MSB)
Configured – 0xD2 Load
Byte
Value (MSB->LSB)
0
0xD2
1
VID (LSB)
2
VID (MSB)
3
PID (LSB)
4
PID (MSB)
5
DID (LSB)
6
DID (MSB)
7
EnableOverCurrentTimer[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, SingleTTOnly, NoEOPatEOF1
Byte 0: 0xD2
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
Document #: 38-08019 Rev. *E
Page 16 of 27
CY7C65640
Byte 5: DID (LSB)
Least Significant Byte of Device ID
Byte 6: DID (MSB)]
Most Significant Byte of Device ID
Byte 7: EnableOvercurrentTimer[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 4.8. 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 port is removable (set to HIGH).
This bit’s values are recorded 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 intervals that is required from
the upstream hub. Default: 0x32 = 100 mA
Byte 10: HubControllerPower
This value is reported in the HubDescriptor:bHubContrCurrent field and is the current in milliamperes required by the hub
controller. Default: 0x64 = 100 mA.
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.
Byte 12: IllegalHubDescriptor, Unused, FullspeedOnly, NoPortIndicators, Reserved, GangPowered, SingleTTOnly,
NoEOPatEOF1
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 TetraHub to accept a DescriptorType of 0x00 for this command. Default is 0, recommended setting is 1.
Bit 6: Unused: This bit is an unused, don’t care bit and can be set to anything.
Bit 5: Fullspeed: Only configures the hub to be a full-speed only device. Default 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 set to 0.
Bit 3: Reserved: This bit is reserved and should not be set to 1. Must be set 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 set to 0.
Bit 1: SingleTTOnly: Indicates that the hub should only support single Transaction Translator mode. This changes various
descriptor values. Default set to 0.
Bit 0: NoEOPatEOF1 turns off the EOP generation at EOF1 in full-speed mode. Note that several USB 1.1 hosts can not
handle EOPatEOF1 properly. Cypress recommends that this option be turned off for general-purpose hubs. Default is 0,
recommended setting is 1.
Document #: 38-08019 Rev. *E
Page 17 of 27
CY7C65640
9.0
Supported USB Requests
9.1
Device Class Commands
Table 9-1. Device Class Requests
Request
bmRequestType bRequest
wValue
wIndex
wLength
Data
GetDeviceStatus
10000000B
0x00
0x0000
0x0000
0x0002
2 Byte Device Status
GetInterfaceStatus
10000001B
0x00
0x0000
0x0000
0x0002
2 Byte Endpoint
Status
GetEndpointStatus
10000010B
0x00
0x0000
0x0000
0x0002
2 Byte Endpoint
Status
GetDeviceDescriptor
10000000B
0x06
0x0001
Zero or
Language ID
Descriptor Descriptor
Length
GetConfigDescriptor
10000000B
0x06
0x0002
Zero or
Language ID
Descriptor Descriptor
Length
GetDeviceQualifierDescriptor
10000000B
0x06
0x0006
Zero or
Language ID
Descriptor Descriptor
Length
GetOtherSpeedConfigurationDescriptor
10000000B
0x06
0x0007
Zero or
Language ID
Descriptor Descriptor
Length
GetConfiguration[5]
10000000B
0x08
0x0000
0x0000
0x0001
Configuration value
SetCongfiguration[5]
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
9.2
Hub Class Commands
Table 9-2. Hub Class Requests
Request
bmRequestType bRequest
wValue
wIndex
wLength
Data
GetHubStatus
10100000B
0x00
0x0000
0x0000
0x0004
Hub Status (See Table 11-19
of Spec) Change Status (See
table 11-20 of Spec)
GetPortStatus
10100011B
0x00
0x0000
Byte 0: 0x00 0x0004
Byte 1: Port
Port Status (See Table 11-21
of Spec) Change Status (See
table 11-20 of Spec)
ClearHubFeature
00100000B
0x01
Feature Selectors[6]
0 or 1
0x0000
0x0000
None
ClearPortFeature
00100011B
0x01
Feature Selectors[6] Byte 0: 0x00 0x0000
1, 2, 8, 16, 17, 18, 19, Byte 1: Port
or 20
None
Notes:
5. Only one configuration is supported in TetraHub.
6. Feature selector values for different feature is presented in Table 9-3.
Document #: 38-08019 Rev. *E
Page 18 of 27
CY7C65640
Table 9-2. Hub Class Requests (continued)
Request
bmRequestType bRequest
wValue
wIndex
wLength
Data
ClearPortFeature
00100011B
0x01
0x0000
Byte 0:
Feature
Selectors[7]
Selectors[6] 22
(PORT_INDICATOR) 0, 1, 2, or 3
Byte 1: Port
None
SetHubFeature
00100000B
0x03
Feature
Selector[6]
0x0000
0x0000
TetraHub STALLs this
request
SetPortFeature
00100011B
0x03
Feature
Selectors[6]
2, 4 or 8
Port
0x0000
None
SetPortFeature
00100011B
0x03
Feature
Selector[6] 21
(PORT_TEST)
0x0000
Byte 0:
Selectors[8]
1,2, 3, 4 or 5
Byte 1: Port
None
SetPortFeature
00100011B
0x03
Feature
0x0000
Byte 0:
Selector[6] 22
Selectors[7]
(PORT_INDICATOR) 0, 1, 2, or 3
Byte 1: Port
None
GetHubDescriptor
10100000B
0x06
Descriptor Type and
Descriptor Index
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
Hub
Descriptor
Length
Table 9-3. 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
Notes:
7. Selector values for different feature is presented in Table 9-5.
8. Selector values for different feature is presented in Table 9-4.
Document #: 38-08019 Rev. *E
Page 19 of 27
CY7C65640
Table 9-4. Test Mode Selector for Feature Selector PORT_TEST (0x21)
PORT_TEST Mode Description
Selector Value
Test_J
1
Test_K
2
Test_SE0_NAK
3
Test_Packet
4
Test_Force_Enable
5
Table 9-5. Port Indicator Selector for Feature Selector PORT_INDICATOR (0x22)
Port Indicator Color
Selector Value
Port Indicator Mode
Color Set Automatically as shown in Table 4-1
0
Automatic Mode
Amber
1
Manual Mode
Green
2
Manual Mode
Off
3
Manual Mode
Document #: 38-08019 Rev. *E
Page 20 of 27
CY7C65640
10.0
Upstream USB Connection
The following is a schematic of the USB upstream connector.
BUSPOWER
VCC
D–
D–
D+
D+
2.2 µF
10V
100 kΩ
GND
SHELL
4.7 nF 250V
1 MΩ
Figure 10-1. USB Upstream Port Connection
11.0
Downstream USB Connections
The following is a schematic of the USB downstream connector.
PWRx
150 µF
10V
VCC
0.01 µF DD–[X]
DD+[X]
D–
D+
GND
SHELL
Figure 11-1. USB Downstream Port Connection
12.0
LED Connections
The following is a schematic of the LED circuitry.
3.3V
GREEN#[x]
AMBER#[x]
680Ω
680Ω
Figure 12-1. USB Downstream Port Connection
Document #: 38-08019 Rev. *E
Page 21 of 27
CY7C65640
13.0
Sample Schematic
5V
VCC
D–
D+
BUSPOWER
D–
D+
PWR1
PWR1
2.2 µF
10V
OVR1
PWR4
Power
PWR2 Management
OVR2
PWR3
100 kΩ
GND
OVR3
PWR4
OVR4
SHELL
4.7 nF 250V
PWR3
150 µF
10V
DD–[1]
DD+[1]
0.01 µF
VCC
D–
D+
GND
SHELL
PWR2
PWR1
3.3V
GREEN#[1]
680Ω
1 MΩ
AMBER#[1]
680Ω
SPI_SD
SPI_SCK
SPI
EEPROM
PWR2
SPI_SD
150 µF
10V
SPI_CS
DD–[2]
DD+[2]
0.01 µF
VCC
D–
D+
GND
SHELL
24 MHz
3.3V
3V
GREEN#[2]
27 pF
2 7pF
680Ω
XOUT
XIN
VCC1
VCC2
VCC3
VCC4
VCC5
VCC6
VCC7
VCC8
VCC9
VCC10
VCC11
AMBER#[2]
680Ω
BUSPOWER BUSPOWER
PWR3
GREEN[1] GREEN[1]
AMBER[1] AMBER[1]
3.3V
DD-[3]
DD+[3]
0.01 µF
GREEN[2] GREEN[2]
AMBER[2] AMBER[2]
100K
D– DD+ D+
CY7C65640-QFN
GREEN[4] GREEN[4]
AMBER[4] AMBER[4]
PWR1
OVR1
PWR2
OVR2
PWR3
OVR3
PWR4
OVR4
SPI_CS
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]
PWR1
OVR1
PWR2
OVR2
PWR3
OVR3
PWR4
OVR4
SPI_CS
VCC
D–
D+
GND
SHELL
GREEN[3] GREEN[3]
AMBER[3] AMBER[3]
RESET
0.1µF
150 µF
10V
3.3 V
GREEN#[3]
AMBER#[3]
680Ω
680Ω
PWR4
150 µF
10V
DD-[4]
DD+[4]
0.01 µF
VCC
D–
D+
GND
SHELL
SPI_SCK SPI_SCK
DD+[4] DD+[4]
3.3 V
GND1
GND2
GND3
GND4
GND5
GND6
GND7
GND8
GND9
GND10
GND11
GND12
SPI_SD SPI_SD
GREEN#[4]
AMBER#[4]
680Ω
680Ω
Figure 13-1. Sample Schematic
Document #: 38-08019 Rev. *E
Page 22 of 27
CY7C65640
14.0
Electrical Characteristics
14.1
Absolute Maximum Ratings
Storage Temperature ........................................................................................................................................ –65°C to +150 °C
Ambient Temperature with Power Applied ................................................................................................................ 0°C to +70°C
Supply Voltage to Ground Potential ...................................................................................................................... –0.5V to +4.0V
DC Voltage Applied to Outputs in High Z State.............................................................................................. –0.5V to VCC + 0.5V
Power Dissipation (4 HS ports).............................................................................................................................................. 1.6W
Static Discharge Voltage ...................................................................................................................................................> 2000V
Max. Output Sink Current per I/O ........................................................................................................................................ 10 mA
14.2
Operating Conditions
TA (Ambient Temperature Under Bias) ..................................................................................................................... 0°C to +70°C
Supply Voltage ................................................................................................................................................... +3.15V to +3.45V
Ground Voltage .......................................................................................................................................................................... 0V
FOSC (Oscillator or Crystal Frequency) ................................................. 24 MHz ± 0.05%, parallel resonant, fundamental mode
14.3
DC Electrical Characteristics
Parameter
Description
Conditions
VCC
Supply Voltage
VIH
Input High Voltage
VIL
Input Low Voltage
Il
Input Leakage Current
0 < VIN < VCC
VOH
Output Voltage High
IOUT = 4 mA
VOL
Output Low Voltage
IOUT = –4 mA
IOH
Output Current High
IOL
CIN
ISUSP
Suspend Current
ICC
Supply Current
Min.
Typ.
Max.
Unit
3.15
3.3
3.45
V
2
5.25
V
–0.5
0.8
V
±10
µA
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
100
Full-speed Host, Full-speed Devices
255
mA
High-speed Host, High-speed Devices
460
mA
High-speed Host, Full-speed Devices
395
mA
Full-speed Host, Full-speed Devices
255
mA
High-speed Host, High-speed Devices
415
mA
High-speed Host, Full-speed Devices
380
mA
Full-speed Host
255
mA
High-speed Host
370
mA
USB Transceiver
ZHSDRV
Driver Output Resistance
Ii
Input Leakage Current
IOZ
Three-state Output OFF-State Current
VHSRS
High-speed Receiver Sensitivity Level
Trfi
Full-speed Frame Jitter
Document #: 38-08019 Rev. *E
41
45
±0.1
49
Ω
±5
µA
±10
µA
210
mV
133
ns
Page 23 of 27
CY7C65640
14.4
AC Electrical Characteristics
Both the upstream USB transceiver and all four downstream transceivers have passed the USB-IF USB 2.0 Electrical Certification
Testing.
14.4.1
Serial Peripheral Interface
Parameter
14.4.2
Description
Conditions
Min.
Typ.
Max.
Unit
Clock Rise/Fall Time
500
ns
Clock Frequency
250
kHz
Data Set-up Time
50
ns
Hold Time
100
ns
Eye Diagram
Document #: 38-08019 Rev. *E
Page 24 of 27
CY7C65640
15.0
Ordering Information
Ordering Code
Package Type
CY7C65640-LFC
56-pin QFN
CY7C65640-LFXC
56-pin QFN Lead Free Package
CY4602
TetraHub USB 2.0 4 port Hub Reference Design Kit
16.0
Package Diagrams
The TetraHub is available in a space-saving 56-pin QFN (8 X 8 mm)
56-Lead QFN 8 x 8 MM LF56A
TOP VIEW
BOTTOM VIEW
SIDE VIEW
0.08[0.003]
C
1.00[0.039] MAX.
7.90[0.311]
8.10[0.319]
A
0.05[0.002] MAX.
0.80[0.031] MAX.
7.70[0.303]
7.80[0.307]
0.18[0.007]
0.28[0.011]
0.20[0.008] REF.
0.80[0.031]
DIA.
PIN1 ID
0.20[0.008] R.
N
N
1
1
2
2
0.45[0.018]
6.45[0.254]
6.55[0.258]
7.90[0.311]
8.10[0.319]
7.70[0.303]
7.80[0.307]
E-PAD
(PAD SIZE VARY
BY DEVICE TYPE)
0.30[0.012]
0.50[0.020]
0°-12°
0.50[0.020]
C
SEATING
PLANE
0.24[0.009]
0.60[0.024]
(4X)
6.45[0.254]
6.55[0.258]
51-85144-*D
Dimensions are in milimeters
MIN
MAX
Note:
The bottom metal pad size varies by product due to die size variable. If metal pad design or dimension are critical with your board
designs, please contact Cypress Sales office to get the specific outline option.
16.1
Quad Flat Package No Leads (QFN) Package Design Notes
The QFN (Quad Flatpack No Leads), being a lead free package, the electrical contact of the part to the Printed Circuit Board
(PCB) is made by soldering the lands on the bottom surface of the package to the PCB. Hence special attention is required to
the heat transfer area below the package to provide a good thermal bond to the circuit board. A Copper (Cu) fill should be designed
into the PCB as a thermal pad under the package. Heat is transferred from the TeraHub through the device’s metal paddle on the
bottom side of the package. Heat from here is conducted to the PCB at the thermal pad. It is then conducted from the thermal
pad to the PCB inner ground plane by a 5 x 5 array of Via. A Via is a plated through-hole in the PCB with a finished diameter of
13 mil. The QFN’s metal die paddle must be soldered to the PCB’s thermal pad. Solder mask is placed on the board top side over
each Via to resist solder flow into the Via. The mask on the top side also minimizes outgassing during the solder reflow process.
Please follow the layout guidelines provided in the PCB layout files accompanied with the CY4602 TetraHub Reference Design
Kit. The information in this section was derived from the original application note by the package vendor. For further information
on this package design please refer to the application note “Surface Mount Assembly of AMKOR’s MicroLeadFrame (MLF)
Technology”. This application note can be downloaded from AMKOR’s website from the following URL
http://www.amkor.com/products/notes_papers/MLF_AppNote_0301.pdf.
This application note provides detailed information on board mounting guidelines, soldering flow, rework process, etc.
Document #: 38-08019 Rev. *E
Page 25 of 27
CY7C65640
Figure 16-1 below displays a cross-sectional area underneath the package. The cross section is of only one via. The solder Paste
template needs to be designed to allow at least 50% solder coverage. The thickness of the solder paste template should be 5mil.
It is recommended that “No Clean”, type 3 solder paste is used for mounting the part. Nitrogen purge is recommended during
reflow.
0.017” dia
Solder Mask
Cu Fill
Cu Fill
PCB Material
Via hole for thermally connecting the
QFN to the circuit board ground plane.
0.013” dia
PCB Material
This figure only shows the top three layers of the
circuit board: Top Solder, PCB Dielectric, and
the Ground Plane.
Figure 16-1. Cross-section of the Area Underneath the QFN Package
Figure 16-2a is a plot of the solder mask pattern and Figure 16-2b displays an X-Ray image of the assembly (darker areas indicate
solder).
Figure 16-2a. Plot of the Solder Mask (White Area)
Figure 16-2b. X-Ray Image of the Assembly
TetraHub is a trademark of Cypress Semiconductor Corporation. All product and company names mentioned in this document
may be the trademarks of their respective holders.
Document #: 38-08019 Rev. *E
Page 26 of 27
© Cypress Semiconductor Corporation, 2004. 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 Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor 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
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
CY7C65640
Document History Page
Document Title: CY7C65640 TetraHub™ High-Speed USB Hub Controller
Document Number: 38-08019
REV.
ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
113506
04/25/02
BHA
New Data Sheet (preliminary)
*A
116812
08/15/02
MON
Supply voltage range changed from 3.3V–3.6V to 3.15V–3.45
Added EPROM types that can be used with HX2 (p. 14)
Added description of bit 7 of Byte 12 (Illegal Hub Descriptor) D2 Load (p. 15)
Added high speed sensitivity level of receiver (p. 20)
Added QFN package design notes (section 16.1)
*B
118518
10/31/02
MON
Fixed the Spec field in the Default Device Descriptor section 7.1
Fixed Interface Protocol field of the interface descriptor, section 7.3
Fixed Device Protocol field of the interface descriptor, section 7.7
Modified table 9-2, section 9.2
Added table 9-4, 9-5, section 9.2
Added table 4-1, 4-2, section 4.8
Added information on bits in wHubCharacterestics, section 7.8
Modified figure 16-1 in QFN package design notes, section 16.1
Included the eye diagram, section 14.4.2
Preliminary to Final
*C
121793
12/09/02
MON
Fixed the SPI clock Frequency to 250 KHz, section 14.4.1
Added information on the configuration of unused port pins, section 6.0
Added statement that no special power-up procedure is required, section 6.0
*D
125275
04/02/03
MON
Changed the name of Bit 3 of Byte 12 of EEPROM for a 0xD2 load (section 8.2)
from BusPowered to Reserved.
Removed all indication to the misconception that the hub can support bus power.
Added information as to which nibble of byte 8 in the EEPROM defines the active
ports and which nibble defines the removable ports, section 8.2.
Added further information on the BUSPOWER pin (pin 26) functionality in section
6.0.
*E
234272
see ECN
MON
Added part number for the lead free package (CY7C65640-LFXC), section 15.0
Changed the name of Bit 6 of Byte 12 of EEPROM for a 0xD2 load from
CompoundDevice to Unused, section 8.2.
Document #: 38-08019 Rev. *E
Page 27 of 27