Cypress CY7C65640A-LFXC Tetrahubâ ¢ high speed usb hub controller Datasheet

CY7C65640A
TetraHub™ High Speed USB
Hub Controller
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
❐ Enable Full Speed Only
❐ Disable Port Indicators
❐ Gang Power Switching
❐ Enable Single TT Mode Only
❐ Enable NoEOPatEOF1
.
Logic Block Diagram
D+
D–
24 MHz
Crystal
High speed
USB Control Logic
Serial
Interface
Engine
USB 2.0 PHY
PLL
SPI Communication
Block
USB Upstream
SPI_SCK
SPI_SD
SPI_CS
Transaction Translator (X4)
Hub Repeater
TT RAM
Routing Logic
USB
Downstream
USB Port Pow- Port
2.0 er Control Sta-
USB
Downstream
USB
USB Port Pow- Port
2.0 er Control Sta-
Downstream
USB Port Pow- Port
2.0 er Control Sta-
USB
Downstream
USB Port Pow- Port
2.0 er Control Sta-
D+ D– PWR#[1 OVR#[1LED D+ D– PWR#[2 OVR#[2LED D+ D– PWR#[3 OVR#[3LED D+ D– PWR#[4 OVR#[4LED
Cypress Semiconductor Corporation
Document #: 38-08019 Rev. *J
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised February 10, 2009
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CY7C65640A
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.
CY7C65640A-LFXC is a functional and pin equivalent die
revision of Cypress's CY7C65640-LFXC. Changes were
made to improve device performance.
TetraHub Architecture
The Logic Block Diagram on page 1 shows the TetraHub Architecture.
USB Serial Interface Engine (SIE)
The SIE allows the CY7C65640A 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:
■
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.
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.
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 or
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.
■
Bit stuffing/unstuffing
■
Checksum generation/checking
■
ACK/NAK/STALL
■
TOKEN type identification
Applications
■
Address checking.
■
Standalone Hubs
Hub Controller
■
Motherboard Hubs
The Hub Control Block does the following protocol handling at
a higher level:
■
Monitor Hub applications
■
External Personal Storage Drives
■
Port Replicators
■
Portable Drive
■
Docking Stations
■
Coordinate enumeration by responding to SETUP packets
■
Fill and empty the FIFOs
■
Suspend/Resume coordination
Document #: 38-08019 Rev. *J
Page 2 of 23
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CY7C65640A
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.
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 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).
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.
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.
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.
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 ). 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
Document #: 38-08019 Rev. *J
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.
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.
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 CY7C65640A 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.)
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.
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CY7C65640A
The OVR[n]# pins of the CY7C65640A 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.
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 depends 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 over-current 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 1 below identifies the mapping of color to port state
in Automatic Mode.
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 2 below displays the color
definition of the indicators when TetraHub is in Manual Mode.
Table 1. Automatic Port State to Port Indicator Color Mapping
Downstream Facing Hub Port State
Port
Switching
Powered Off
Disconnected, Disabled, Not Enabled, Transmit, Suspended, Resuming,
Configured, Resetting, Testing
or TransmitR
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
Table 2. Port Indicator Color Definitions in Manual Mode
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
Note. Information presented in Table 1 and Table 2 is from USB 2.0 specification Tables 11-6 and 11-7, respectively.
Document #: 38-08019 Rev. *J
Page 4 of 23
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CY7C65640A
Pin Configuration
DD–[4]
DD+[4]
VCC
54
51
50
49
48
47
46
45
44
GREEN#[4]
AMBER#[4]
VCC
RESET
GND
SPI_SCK
SPI_SD
52
GND
53
OVR#[4]
PWR#[4]
55
OVR#[3]
56
PWR#[3]
VCC
GND
Figure 1. 56-Pin Quad Flat Pack No Leads (8 mm x 8 mm)
43
1
42 AMBER#[3]
2
41 GREEN#[3]
3
40
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
Document #: 38-08019 Rev. *J
21
22
23
24
25
GND
XIN
XOUT
VCC
GND
SPI_CS
26
27
28
GND
20
VCC
19
BUSPOWER
18
VCC
17
D–
16
GND
VCC
15
D+
29 PWR#[1]
Page 5 of 23
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CY7C65640A
Table 0-1. CY7C65640APin 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 speedhigh speedhigh 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.
Document #: 38-08019 Rev. *J
Page 6 of 23
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CY7C65640A
Table 0-1. CY7C65640APin Assignments (continued)
Pin
Name
Type
Default
Description
DD–[1]
I/O/Z
Z
Downstream D– Signal.
14
DD+[1]
I/O/Z
Z
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.
DOWNSTREAM PORT 1
13
DOWNSTREAM PORT 2
9
DD–[2]
I/O/Z
Z
Downstream D– Signal.
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.
DD–[3]
I/O/Z
Z
Downstream D– Signal.
DOWNSTREAM PORT 3
5
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.
DOWNSTREAM PORT 4
1
DD–[4]
I/O/Z
Z
Downstream D– Signal.
2
DD+[4]
I/O/Z
Z
Downstream D+ Signal.
44
AMBER#[4]
O
1
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
43
GREEN#[4]
O
1
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
51
OVR#[4]
Input
1
Overcurrent Condition Detection Input. Active LOW.
52
PWR#[4]
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.
Document #: 38-08019 Rev. *J
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CY7C65640A
Default Descriptors
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 enumerates with the following default descriptor
values.
Table 3. Tetra Hub Descriptor Values
Byte
Full Speed
High Speed
Field Name
Description
0
0x12
0x12
bLength
18 Bytes
1
0x01
0x01
bDescriptorType
DEVICE_DESCRIPTOR
2,3
0x0200
0x0200
bcdUSB
USB specification 2.0
4
0x09
0x09
bDeviceClass
HUB
5
0x00
0x00
bDeviceSubClass
None
6
0x00
0x02
bDeviceProtocol
None
bMaxPacketSize0
64 bytes
wIdVendor
VID (overwritten by what is defined in EEPROM)
7
0x40
0x40
8,9
0x04B4
0xx04B4
10,11
0x6560
0x6560
wIdProduct
PID (overwritten by what is defined in EEPROM)
12, 13
0x000B
0x000B
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
Table 4. Configuration Descriptor
Byte
Full Speed
High Speed
Field Name
Description
0
0x09
0x09
bLength
9 Bytes
1
0x02
0x02
bDescriptorType
CONFIG_DESCRIPTOR
2
0x0019
0x0029[1]
wTotalLength
Length of all other descriptors
4
0x01
0x01
bNumInterfaces
1
5
0x01
0x01
bConfigurationValue
The configuration to be used
6
0x00
0x00
iConfiguration
7
0xE0
0xE0
bmAttributes
8
0x32
0x32[2]
bMaxPower
Table 5. Interface Descriptor
Byte
0
1
2
3
4
Full Speed
0x09
0x04
0x00
0x00
0x01
High Speed
0x09
0x04
0x00
0x00
0x01
Field Name
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
5
6
7
8
0x09
0x00
0x00
0x00
0x09
0x00
0x01
0x00
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
Description
9 Bytes
INTERFACE_DESCRIPTOR
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. *J
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CY7C65640A
Table 6. Endpoint Descriptor
Byte
Full Speed
High Speed
0
0x07
0x07
1
0x05
0x05
bDescriptorType
ENDPOINT_DESCRIPTOR
2
0x81
0x81
bEndpointAddress
IN Endpoint #1
3
0x03
0x03
4,5
0x0001
0x0001
6
0xFF
0x0C
Field Name
bLength
Description
7 Bytes
bmAttributes
Interrupt
wMaxPacketSize
Maximum Packet Size
bInterval
Polling Rate
Table 7. Interface Descriptor[3]
I
Byte
Full Speed
0
N/A
0x09
bLength
9 Bytes
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
Table 8. Endpoint
High Speed
Field Name
Description
Descriptor[3]
Byte
Full Speed
High Speed
Field Name
Description
0
N/A
0x07
bLength
7 Bytes
1
N/A
0x05
bDescriptorType
ENDPOINT_DESCRIPTOR
2
N/A
0x81
bEndpointAddress
IN Endpoint #1
3
N/A
0x03
bmAttributes
Interrupt
4,5
N/A
0x0001
wMaxPacketSize
Maximum Packet Size
6
N/A
0x0C
bInterval
Polling Rate
Table 9. Device Qualifier Descriptor
Byte
Full Speed
High Speed
Field Name
Description
0
0x0A
0x0A
bLength
10 Bytes
1
0x06
0x06
bDescriptorType
DEVICE_QUALIFIER
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
bcdUSB
Note
3. If TetraHub is configured for single-TT only (from the external EEPROM), this descriptor is not present.
Document #: 38-08019 Rev. *J
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CY7C65640A
Table 10. Hub Descriptor
Byte
All Speeds
0
0x09
bLength
Field Name
9 Bytes
Description
1
0x29
bDescriptorType
HUB Descriptor
2
0x04[10]
bNbrPorts
Number of ports supported
3,4
0x0089[10]
wHubCharacteristics
b1, b0: Logical Power Switching Mode
00: Ganged power switching (all ports’ power at once)
01: Individual port power switching (Default in TetraHub)
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 buspowered 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[10]
bPwrOn2PwrGood
Time from when the port is powered to when the power is good on that port
6
0x64[10]
bHubContrCurrent
Maximum current requirement for the Hub Controller
7
0x00[10]
bDeviceRemovable
Indicates if the port has a removable device attached
8
0xFF[10]
bPortPwrCtrlMask
Required for compatibility with software written for 1.0 compliant devices
Note
4. This value is configured through the External EEPROM.
Document #: 38-08019 Rev. *J
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CY7C65640A
Configuration Options
Byte 0: 0xD2
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.
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)]
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
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
Needs to be programmed with 0xD2
Byte 1: VID (LSB)
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, Unused, FullspeedOnly,
NoPortIndicators, Reserved, GangPowered, SingleTTOnly, NoEOPatEOF1
Document #: 38-08019 Rev. *J
Most Significant Byte of Product ID
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 . 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
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CY7C65640A
of 0x00 for this command. Default is 0, recommended setting
is 1.
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 6: Unused: This bit is an unused, don’t care bit and can be
set to anything.
Bit 1: SingleTTOnly: Indicates that the hub should only support single Transaction Translator mode. This changes various descriptor values. Default set to 0.
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 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.
Bit 3: Reserved: This bit is reserved and should not be set to
1. Must be set to 0.
Supported USB Requests
Device Class Commands
Table 11. 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
Note
5. Only one configuration is supported in TetraHub.
Document #: 38-08019 Rev. *J
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CY7C65640A
Hub Class Commands
Table 12. 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
ClearPortFeature
00100011B
0x01
Byte 0:
0x0000
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)
Byte 0:
0x0000
Selectors[8]
1,2, 3, 4 or 5
Byte 1: Port
None
SetPortFeature
00100011B
0x03
Feature
Byte 0:
0x0000
Selector[6] 22
Selectors[7]
(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
Notes
6. Feature selector values for different features are presented in Table 13.
7. Selector values for different features are presented in Table 15.
8. Selector values for different features are presented in Table 14.
Document #: 38-08019 Rev. *J
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Table 14. Test Mode Selector for Feature Selector
PORT_TEST (0x21)
Table 13. Hub Class Feature Selector
Feature Selector
PORT_TEST Mode Description
Recipient
Value
C_HUB_LOCAL_POWER
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
Port Indicator Color
C_PORT_SUSPEND
Port
18
C_PORT_OVER_CURRENT
Port
19
C_PORT_RESET
Port
20
PORT_TEST
Port
21
PORT_INDICATOR
Port
22
Selector Value
Test_J
1
Test_K
2
Test_SE0_NAK
3
Test_Packet
4
Test_Force_Enable
5
Table 15. Port Indicator Selector for Feature Selector
PORT_INDICATOR (0x22)
Selector
Value
Port Indicator
Mode
Color Set Automatically as
shown in Table 1
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
D–
D–
D+
D+
2.2 μF
10V
100 kΩ
GND
SHELL
4.7 nF 250V
1 MΩ
Document #: 38-08019 Rev. *J
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CY7C65640A
Downstream USB Connections
The following is a schematic of the USB downstream connector
Figure 3. USB Downstream Port Connection.
VCC
PWRx
150 µF
10V
0.01 µF DD–[X]
D–
DD+[X]
D+
GND
SHELL
LED Connections
The following is a schematic of the LED circuitry
Figure 4. USB Downstream Port Connection.
GREEN#[x]
AMBER#[x]
Document #: 38-08019 Rev. *J
680Ω
3.3V
680Ω
Page 15 of 23
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CY7C65640A
Sample Schematic
Figure 5. Sample Schematic
5V
VCC
D–
D+
BUSPOWER
D+
2.2 μF
10V
OVR1
PWR4
Power
PWR2 Management
OVR2
PWR3
100 kΩ
GND
SHELL
PWR1
PWR1
D–
OVR3
PWR4
OVR4
4.7 nF 250V
PWR3
150 μF
10V
DD–[1]
DD+[1]
0.01 μF
VCC
D–
D+
GND
SHELL
PWR2
PWR1
GREEN#[1]
1 MΩ
AMBER#[1]
3.3V
680Ω
680Ω
SPI_SD
SPI_SCK
SPI
EEPROM
SPI_SD
SPI_CS
PWR2
150 μF
10V
DD–[2]
DD+[2]
0.01 μF
VCC
D–
D+
GND
SHELL
24 MHz
3V
GREEN#[2]
27 pF
2 7pF
3.3V
680Ω
XOUT
XIN
VCC1
VCC2
VCC3
VCC4
VCC5
VCC6
VCC7
VCC8
VCC9
VCC10
VCC11
AMBER#[2]
680Ω
BUSPOWER BUSPOWER
GREEN[1] GREEN[1]
AMBER[1] AMBER[1]
3.3V
150 μF
10V
GREEN[2] GREEN[2]
AMBER[2] AMBER[2]
100K
D– DD+ D+
CY7C65640A-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
GREEN#[3]
AMBER#[3]
680Ω
PWR4
150 μF
10V
3.3 V
DD-[4]
DD+[4]
0.01 μF
VCC
D–
D+
GND
SHELL
SPI_SD SPI_SD
GND1
GND2
GND3
GND4
GND5
GND6
GND7
GND8
GND9
GND10
GND11
GND12
VCC
D–
D+
680Ω
SPI_SCK SPI_SCK
DD+[4] DD+[4]
Document #: 38-08019 Rev. *J
DD-[3]
DD+[3]
0.01 μF
GND
SHELL
GREEN[3] GREEN[3]
AMBER[3] AMBER[3]
RESET
0.1μF
PWR3
GREEN#[4]
AMBER#[4]
680Ω
3.3 V
680Ω
Page 16 of 23
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CY7C65640A
Maximum Ratings
Static Discharge Voltage........................................... > 2000V
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
Max. Output Sink Current per I/O ................................ 10 mA
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
DC Electrical Characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
3.15
3.3
3.45
V
VCC
Supply Voltage
VIH
Input High Voltage
2
5.25
V
VIL
Input Low Voltage
–0.5
0.8
V
±10
μA
Il
Input Leakage Current
0 < VIN < VCC
VOH
Output Voltage High
IOUT = 4 mA
VOL
Output Low Voltage
IOUT = –4 mA
IOH
Output Current High
IOL
CIN
ISUSP
Suspend Current
ICC
2.4
V
0.4
V
4
mA
Output Current Low
4
mA
Input Pin Capacitance
10
pF
100
μA
Full speed Host, Full speed Devices
255
mA
High speed Host, High speed Devices
460
mA
Supply Current
4 Active ports
2 Active Ports
No Active Ports
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
41
45
±0.1
49
Ω
±5
μA
±10
μA
210
mV
133
ns
Thermal Resistance
TJA
Theta Thermal Coefficient Junction to
Ambient
Document #: 38-08019 Rev. *J
E-Pad configuration in section
at zero airflow
23.27
°C/W
Page 17 of 23
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CY7C65640A
AC Electrical Characteristics
Both the upstream USB transceiver and all four downstream transceivers have passed the USB-IF USB 2.0 Electrical Certification
Testing.
Table 16. Serial Peripheral Interface
Parameter
Description
Conditions
Min
Clock Rise/Fall Time
Clock Frequency
Typ
Max
Unit
500
ns
250
kHz
Data Set-up Time
50
ns
Hold Time
100
ns
Reset period
1.9
ms
Figure 6. Eye Diagram
Document #: 38-08019 Rev. *J
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CY7C65640A
Ordering Information
Ordering Code
CY7C65640A-LFXC
CY7C65640A-LTXC
CY7C65640A-LTXCT
CY4602
Package Type
56-pin QFN Pb-free Package
56-pin QFN Sawn type
56-pin QFN Sawn type
TetraHub USB 2.0 4 port Hub Reference Design Kit
Package Diagram
The TetraHub is available in a space-saving 56-pin QFN (8 × 8 mm)
Figure 7. 56-Pin QFN 8 x 8 MM LF56A
51-85144 *G
Document #: 38-08019 Rev. *J
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CY7C65640A
Figure 8. 56-Pin Sawn QFN (8X8X0.90 MM)
51-85187 *C
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 a Cypress Sales office to get
the specific outline option.
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 TetraHub 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
Document #: 38-08019 Rev. *J
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.
Figure 9 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
5 mil. It is recommended that “No Clean”, type 3 solder paste is
used for mounting the part. Nitrogen purge is recommended
during reflow.
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Figure 9. Cross section of the Area Underneath the QFN Package
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 10 is a plot of the solder mask pattern and Figure 11 displays an X-Ray image of the assembly (darker areas indicate solder).
Figure 10. Plot of the Solder Mask (White Area)
Document #: 38-08019 Rev. *J
Figure 11. X-Ray Image of the Assembly
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Document History Page
Document Title: CY7C65640A TetraHub™ High Speed USB Hub Controller
Document Number: 38-08019
REV.
ECN NO.
Submission
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.
*F
285171
see ECN
KKU
Changed CY7C65640 to CY7C65640A and reformatted to new format
*G
308296
see ECN
KKU
Added reset period under AC characteristics.
Removed compound device from features list.
Updated section 7.1 DID from 0x0007 to 0x000B for rev E silicon.
*H
390258
see ECN
KKU
Added theta thermal coefficient junction to ambient (TJA) to section 14.3
*I
522224
see ECN
TEH
Corrected typo in table 6-1. Changed downstream port 4 signal labels from [3] to
[4]. Updated package diagram. Updated to new template.
*J
2657415
02/10/09
Document #: 38-08019 Rev. *J
DPT/PYRS Added package diagram spec 51-85187, updated package diagram spec
51-85144 and updated Ordering Information table
Page 22 of 23
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Document #: 38-08019 Rev. *J
Revised February 10, 2009
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