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PDF CY7C65640 Data sheet ( Hoja de datos )
| Número de pieza | CY7C65640 | |
| Descripción | TetraHub High-speed USB Hub Controller | |
| Fabricantes | Cypress Semiconductor | |
| Logotipo |  |
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CY7C65640
CY7C65640
TetraHub™ High-speed USB Hub Controller
Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600
Document #: 38-08019 Rev. *C
Revised December 5, 2002
1 page  
CY7C65640
2.0 Introduction
Cypress's TetraHub™ is a high-performance 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 Transaction Translators. It is suitable for standalone hubs, motherboard hubs, and monitor
hub applications. TetraHub is a self-powered USB 2.0 device.
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 applications notes and product description.
2.1 TetraHub Architecture
Figure 2-1 is a block diagram of the TetraHub Architecture.
24 MHz
Crystal
D+ D–
USB 2.0 PHY
PLL
USB Upstream Port
Hub Repeater
Serial
Interface
Engine
High-Speed
USB Control Logic
SPI Communication
Block
Transaction Translator (X4)
TT RAM
SPI_SCK
SPI_SD
SPI_CS
Routing Logic
USB Downstream Port 1
USB 2.0 Port Power Port
PHY Control Status
USB Downstream Port 2
USB 2.0 Port Power Port
PHY Control Status
USB Downstream Port 3
USB 2.0 Port Power Port
PHY Control Status
USB Downstream Port 4
USB 2.0 Port Power Port
PHY Control Status
D+ D– PWR#[1] OVR#[1] LED D+ D– PWR#[2] OVR#[2] LED D+ D– PWR#[3] OVR#[3] LED D+ D– 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
Document #: 38-08019 Rev. *C
Page 5 of 25
5 Page 
CY7C65640
Table 6-1. Pin Assignments (continued)
Pin Name
Type Default
14 DD+[1]
36 AMBER#[1]
35 GREEN#[1]
I/O/Z
O
O
Z
1
1
30 OVR#[1]
29 PWR#[1]
DOWNSTREAM PORT 2
Input
O/Z
1
Z
9 DD–[2]
10 DD+[2]
38 AMBER#[2]
I/O/Z
I/O/Z
O
Z
Z
1
37 GREEN#[2]
32 OVR#[2]
31 PWR#[2]
O
Input
O/Z
1
1
Z
DOWNSTREAM PORT 3
5 DD–[3]
6 DD+[3]
I/O/Z
I/O/Z
Z
Z
42 AMBER#[3]
41 GREEN#[3]
53 OVR#[3]
O
O
Input
1
1
1
54 PWR#[3]
DOWNSTREAM PORT 4
1 DD–[3]
O/Z
I/O/Z
Z
Z
2 DD+[3]
44 AMBER#[3]
43 GREEN#[3]
I/O/Z
O
O
Z
1
1
51 OVR#[3]
52 PWR#[3]
Input
O/Z
1
Z
Description
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
Overcurrent Condition Detection Input. Active LOW.
Power Switch Driver Output. Active LOW.
Downstream D– Signal.
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
Overcurrent Condition Detection Input. Active LOW.
Power Switch Driver Output. Active LOW.
Downstream D– Signal.
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
Overcurrent Condition Detection Input. Active LOW.
Power Switch Driver Output. Active LOW.
Downstream D– Signal.
Downstream D+ Signal.
LED. Driver output for Amber LED. Port Indicator Support. Active LOW.
LED. Driver output for Green LED. Port Indicator Support. Active LOW.
Overcurrent Condition Detection Input. Active LOW.
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. *C
Page 11 of 25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet CY7C65640.PDF ] | |
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