Cypress AN200210, Начало работы

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Getting Started with EZ-
PD™ CCG3
www.cypress.com
Document No. 002-00210 Rev. *A 6
Figure 3 . CY4531 EZ-PD CCG3 EVK Architecture Block Diagram
PC
USB3.0
DP
USB2.0
CCG Base Board
CCG3
Daughter
Card
DP
Type-C
Port
SS USB
Type-B
Connector
Mux
with Re-
driver
24V DC
power
adapter
USB-
Serial
CC
I2C
Power
Display
Port
Lines
USB
Lines
DP
– DisplayPort
PS
– Power Supply
USB2
– Used only for programming
Power
Management
CCG3
Power
Control Ckt
The CCG base board consists of a DC input power supply, display multiplexer, DisplayPort, SuperSpeed Type-B
port, and Type-C port. The CCG3 daughter card consists of the CCG3 device and a USB-Serial IC to provide a USB
interface for debugging and programming. The configuration channel (CC) lines of the CCG3 device are connected to
the Type-C port. The display multiplexer is controlled by the CCG3 device over an I
2
C interface.
The CY4531 EZ-PD CCG3 EVK includes power provider and consumer path control circuitry on the CCG3 daughter
card to showcase EZ-
PD CCG3’s ability to switch its power role from a provider to a consumer and vice versa. It
contains over-voltage protection (OVP) and over-current protection (OCP) circuitry for VBUS and supports EZ-PD
CCG3 device programming over SWD and I
2
C interfaces. The EVK supports PCs, notebooks, tablets, and other
applications that would host a Type-C interface. It is primarily intended as an evaluation vehicle for USB Host
systems that house a Type-C connector. Refer to the
CY4531 EZ-PD CCG3 EVK Guide for in-depth information
about EVK use cases and a Type-C notebook application using the EVK.
2.2 CY4500 EZ-PD Protocol Analyzer
Cypress’s
CY4500 EZ-PD Protocol Analyzer supports protocol analysis of the USB PD and USB Type-C
specifications. It performs nonintrusive probing, and captures accurate protocol messages on the CC line. This
analyzer consists of Cypress’s programmable MCU (PSoC 5LP), which monitors the data on the CC line and sends
the data to the host application over a USB interface. The Type-C plug and Type-C receptacle on this analyzer
provide a pass-through for the Power Delivery (PD) packets transmitted between each Type-C PD connection. The
processor MCU taps these PD packets without disturbing the system and transfers them over the USB interface to a
PC running the host application.
Figure 4 shows the connections between the CY4500 EZ-PD Protocol Analyzer and
the CY4531 CCG3 EVK.