Cypress EZ-PD CY4533 Manuel - Page 19
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A. Terminology
Terminology
This guide assumes that you are familiar with the fundamentals of the Type-C connectivity and the USB Power Delivery
protocol. A brief description of Type-C terms is provided here for reference.
Alternate Modes: A feature of a USB Type-C system whereby one or both SuperSpeed lanes may be repurposed for use
with a different serial protocol, such as a DisplayPort, eSATA, or Thunderbolt.
Client: A USB peripheral such as a hub, docking station, or monitor.
Configuration channel (CC): A USB Type-C bus wire used to transmit protocol signals. This is a half-duplex 300 kHz
signal.
Consumer: A Type-C port that sinks power from VBUS.
DisplayPort: A digital display interface standard developed by the Video Electronics Standards Association. It is used
primarily to connect a video source to a display such as a computer monitor.
Downstream facing port (DFP): A USB Type-C port on a host or a hub to which devices are connected.
Dp, Dn: USB Type-C bus wires used to transmit and receive USB 2.0 data.
Dual-role port (DRP): A USB Type-C port that can operate as either a DFP or a UFP.
Electronically Marked Cable Assembly (EMCA): A USB cable that includes an IC that reports cable characteristics (such
as current rating) to the Type-C ports.
GND
RX1p
RX1n
V
SBU2
BUS
B12
B11
B10
B9
B8
A1
A2
A3
A4
A5
GND
TX1p
TX1n
V
CC
BUS
Host: A USB Host system such as a PC, notebook, and laptop.
Provider: A Type-C port that sources power over VBUS.
Sideband use (SBU): A USB Type-C bus wire used for non-USB control signals, such as DisplayPort control signals.
Type-C Transceiver: A transmitter/receiver that communicates over the CC.
TX1p, TX1n, RX1p, RX1n, TX2p, TX2n, RX2p, and RX2n: USB Type-C bus wires used to transmit and receive
SuperSpeed USB and PCIe or DisplayPort data.
Upstream facing port (UFP): A USB Type-C port on a device or a hub that connects to a host or the DFP of a hub.
USB Power Delivery (USB PD, PD): A new USB standard that increases maximum power delivery over USB from 7.5 W
to 100 W.
USB Type-C (Type-C): A new standard with a slimmer USB connector and a reversible cable, capable of sourcing up to
100 W of power and supporting Alternate Modes.
VBUS: A USB Type-C bus wire used for power; initially 5 V, but can be increased up to 20 V on USB PD systems.
VCONN: A USB Type-C bus wire used to power the IC in the EMCA.
CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B
USB3.0 Type-C Plug
V
V
TX2n
TX2p
CONN
BUS
B5
B4
B3
B2
A6
A7
A8
A9
A10
A11
Dp
Dn
SBU1
V
RX2n
RX2p
BUS
GND
GND
TX1p
B1
A1
A2
2.4mm
B12
B11
A12
GND
GND
RX1p
USB3.0 Type-C Receptacle
TX1n
V
CC1
Dp1
Dn1
SBU1
V
BUS
BUS
A3
A4
A5
A6
A7
A8
A9
B10
B9
B8
B7
B6
B5
B4
RX1n
V
SBU2
Dn2
Dp2
CC2
V
BUS
BUS
RX2n
RX2p
GND
A10
A11
A12
2.5mm
B3
B2
B1
TX2n
TX2p
GND
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