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參數(shù)資料
| 型號(hào)： | CY7C65640A |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | TetraHub High-Speed USB Hub Controller(TetraHub高速USB Hub控制器) |
| 中文描述： | TetraHub高速USB集線器控制器（TetraHub高速USB集線器控制器） |
| 文件頁(yè)數(shù)： | 2/21頁(yè) |
| 文件大?。?/td> | 513K |
| 代理商： | CY7C65640A |
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CY7C65640A
Document #: 38-08019 Rev. *H
Page 2 of 21
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-perfor-
mance 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.
2.1
Figure 1-1
is a block diagram of the TetraHub Architecture.
TetraHub Architecture
2.2
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:
Bit stuffing/unstuffing
Checksum generation/checking
ACK/NAK/STALL
TOKEN type identification
Address checking.
USB Serial Interface Engine (SIE)
2.3
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.
Hub Controller
2.4
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
Hub Repeater
Ensures orderly entry into and out of the Suspend state,
including proper handling of remote wakeups.
2.5
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 trans-
lator. 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.
Transaction Translator
3.0
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
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+
System Initialization
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C65640ALFXC | 制造商:Cypress Semiconductor 功能描述: |
| CY7C65640A-LFXC | 功能描述:USB 接口集成電路 USB 2.0 4 Port Hub COM RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| CY7C65640A-LFXCT | 功能描述:USB 接口集成電路 USB 2.0 4 Port Hub COM RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| CY7C65640A-LTXC | 功能描述:USB 接口集成電路 USB HS Controller RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| CY7C65640A-LTXCKM | 制造商:Cypress Semiconductor 功能描述: |
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