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USB7252/KDX 数据表(PDF) 10 Page - Microchip Technology

部件名 USB7252/KDX
功能描述  4-Port USB 3.2 Gen 2 Type-C짰 Controller Hub
Download  65 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB7252/KDX 数据表(HTML) 10 Page - Microchip Technology

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USB7252
DS00002736D-page 10
2018 - 2020 Microchip Technology Inc.
3.2
Pin Descriptions
This section contains descriptions of the various USB7252 pins. The “
_N” symbol in the signal name indicates that the
active, or asserted, state occurs when the signal is at a low voltage level. For example,
RESET_N indicates that the
reset signal is active low. When “
_N” is not present after the signal name, the signal is asserted when at the high voltage
level.
The terms assertion and negation are used exclusively. This is done to avoid confusion when working with a mixture of
“active low” and “active high” signal. The term assert, or assertion, indicates that a signal is active, independent of
whether that level is represented by a high or low voltage. The term negate, or negation, indicates that a signal is inac-
tive.
The “If Unused” column provides information on how to terminate pins if they are unused in a customer design.
Buffer type definitions are detailed in Section 1.2, Buffer Types.
TABLE 3-1:
PIN DESCRIPTIONS
Name
Symbol
Buffer
Type
Description
If Unused
USB 3.2 Gen 2 Interfaces
Upstream USB
3.2 Gen 2 TX D+
USB3UP_TXDP
I/O-U
Upstream USB 3.2 Gen 2 Transmit Data
Plus.
Float
Upstream USB
3.2 Gen 2 TX D-
USB3UP_TXDM
I/O-U
Upstream USB 3.2 Gen 2 Transmit Data
Minus.
Float
Upstream USB
3.2 Gen 2 RX D+
USB3UP_RXDP
I/O-U
Upstream USB 3.2 Gen 2 Receive Data
Plus.
Weak pull-
down to
GND
Upstream USB
3.2 Gen 2 RX D-
USB3UP_RXDM
I/O-U
Upstream USB 3.2 Gen 2 Receive Data
Minus.
Weak pull-
down to
GND
Downstream
Port 1 USB 3.2
Gen 2 TX D+
Orientation A
USB3DN_TXDP1A
I/O-U
Downstream USB Type-C® “Orientation A”
SuperSpeed+ Transmit Data Plus, port 1.
Float
Downstream
Port 1 USB 3.2
Gen 2 TX D- Ori-
entation A
USB3DN_TXDM1A
I/O-U
Downstream USB Type-C “Orientation A”
SuperSpeed+ Transmit Data Minus, port 1.
Float
Downstream
Port 1 USB 3.2
Gen 2 RX D+
Orientation A
USB3DN_RXDP1A
I/O-U
Downstream USB Type-C “Orientation A”
SuperSpeed+ Receive Data Plus, port 1.
Weak pull-
down to
GND
Downstream
Port 1 USB 3.2
Gen 2 RX D-
Orientation A
USB3DN_RXDM1A
I/O-U
Downstream USB Type-C “Orientation A”
SuperSpeed+ Receive Data Minus, port 1.
Weak pull-
down to
GND
Downstream
Port 1 USB 3.2
Gen 2 TX D+
Orientation B
USB3DN_TXDP1B
I/O-U
Downstream USB Type-C “Orientation B”
SuperSpeed+ Transmit Data Plus, port 1.
Float


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