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USB5926C/KD 数据表(PDF) 30 Page - Microchip Technology

部件名 USB5926C/KD
功能描述  6-Port USB 3.2 Gen 1 SmartHubTM with Support for Multiple USB Type-C짰 UFP and DFP
PDF  66 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB5926C/KD 数据表(HTML) 30 Page - Microchip Technology

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USB5926
DS00002234E-page 30
2016-2021 Microchip Technology Inc.
8.0
FUNCTIONAL DESCRIPTIONS
This section details various USB5926 functions, including:
• USB Type-C Receptacle Support
• Battery Charging
• Resets
• Link Power Management (LPM)
• Remote Wakeup Indicator
• Port Control Interface
• Port Split
8.1
USB Type-C Receptacle Support
The USB5926 has built-in support for the USB Type-C receptacle. There are 3 fundamental configurations:
• External USB 3.2 Gen 1 Multiplexer
• Internal USB3.1 Gen 1 Multiplexer, “Type-C Control Mode 1”
• Internal USB 3.1 Gen 1 Multiplexer, “Type-C Control Mode 2”
8.1.1
EXTERNAL USB 3.2 GEN 1 MULTIPLEXER
C_ATTACH[0:2] pins are used to signal to the hub when a valid USB Type-C connection has been detected. This func-
tionality requires an external USB Type-C controller such as a Microchip UTC2000 to monitor the USB Type-C recep-
tacle for a valid attach. This signal is used to enable and disable clocking to the USB 3.2 Gen 1 PHY in order to reduce
power consumption when there is no USB Type-C attach.
The polarity of the
C_ATTACH[0:2] pins are controlled by the CC_POL pin. See Table 3-6 for details.
A diagram of a USB Type-C Downstream Facing Port with a USB5926, Microchip UTC2000, and external multiplexer
is shown in Figure 8-1.
FIGURE 8-1:
DFP TYPE-C PORT WITH MICROCHIP UTC2000 AND EXTERNAL MUX
USB Type-C®
External Mux
Downstream Port
VBUS
GENERIC
PORT PWR
CTLR
POWER
OCS
SSTX+
SSTX-
SSRX+
SSRX-
D+
D-
PRTCTL
USB Type-C
UTC2000
DFP Mode
ENABLE
OCS#
PLUG_OR#
PPC_EN
CC1
CC2
C_ATTACH
ALT_MUX_EN
CC_POL
MUX
SSTXA+
SSTXA-
SSRXA+
SSRXA-
SSTXB+
SSTXB-
SSRXB+
SSRXB-
SSTX+
SSTX-
SSRX+
SSRX-
A/B
3.3V
SSTXA+
SSTXA-
SSRXA+
SSRXA-
SSTXB+
SSTXB-
SSRXB+
SSRXB-
D+
D-
CC1
CC2



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