CY7C656XX CYPRESS [Cypress Semiconductor], CY7C656XX Datasheet - Page 2

• Manufacturer Part Number: CY7C656XX
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-08037 Rev. *H
Introduction
EZ-USB HX2LP™ is Cypress’ next generation family of high
performance, low power USB 2.0 hub controllers. HX2LP is an
ultra low power single chip USB 2.0 hub controller with
integrated upstream and downstream transceivers, a USB
Serial Interface Engine (SIE), USB Hub Control and Repeater
logic, and Transaction Translator (TT) logic. Cypress has also
integrated many of the external passive components, such as
pull up and pull down resistors, reducing the overall bill of
materials required to implement a hub design. The HX2LP
portfolio consists of:
1. CY7C65630: 4-port/single transaction translator
Block Diagram
CY7C65620
This device option is for ultra low power applications that
require four downstream ports. All four ports share a single
transaction translator. The CY7C65630 is available in a 56
QFN and is also pin-for-pin compatible with the
CY7C65640.
24 MHz
Crystal
D+
USB 2.0
USB Downstream Port 1
PHY
D- PWR#[1]
D+
USB Upstream Port
PLL
Port Power
Hub Repeater
USB 2.0 PHY
Control
OVR#[1]
Status
Port
LED
D -
D+
USB 2.0
USB Downstream Port 2
PHY
D- PWR#[2]
Port Power
Control
OVR#[2]
Interface
Engine
Serial
Status
Port
Routing Logic
LED
Transaction Translator (X1)
D+
USB 2.0
USB Downstream Port 3
PHY
All device options are supported by Cypress’ world class
reference design kits, which include board schematics, bill of
materials, Gerber files, Orcad files, and thorough design
documentation.
USB Serial Interface Engine
The Serial Interface Engine (SIE) allows the CY7C656xx to
communicate with the USB host. The SIE handles the
following USB activity independently of the Hub Control Block.
2. CY7C65620:
• Bit stuffing/unstuffing
• Checksum generation/checking
• TOKEN type identification
• Address checking.
D- PWR#[3]
This device option is for a 2-port bus powered application.
Both ports share a single transaction translator. The
CY7C65620 is available in a 56 QFN.
TT RAM
Port Power
Control
OVR#[3]
Status
Port
LED
SPI Communication
USB Control Logic
D+
USB 2.0
USB Downstream Port 4
PHY
High-Speed
D- PWR#[4]
Block
Port Power
Control
OVR#[4]
Status
CY7C656xx
Port
LED
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SPI_SCK
SPI_SD
SPI_CS
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