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USB4715 数据表(PDF) 11 Page - Microchip Technology

部件名 USB4715
功能描述  USB 2.0 Hi-Speed Hub Controller with FlexConnect on all Ports
PDF  47 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB4715 数据表(HTML) 11 Page - Microchip Technology

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DS00002514B-page 11
USB4715
External 25 MHz
Reference Clock
Input
CLK_IN
ICLK
External reference clock input.
The device may alternatively be driven by a single-
ended clock oscillator. When this method is used,
XTALO should be left unconnected.
External 25 MHz
Crystal Output
XTALO
OCLK
External 25 MHz crystal output.
Test
TESTEN
A
Test pin.
This signal is used for test purposes and must always
be connected to ground.
Analog Test
ATEST
A
Analog test pin.
This signal is used for test purposes and must always
be connected to ground.
Test 1
TEST1
A
Test 1 pin.
This signal is used for test purposes and must always
be pulled-up to 3.3V via a 4.7 kΩ resistor.
Test 2
TEST2
A
Test 2 pin.
This signal is used for test purposes and must always
be pulled-down to ground via a 4.7 kΩ resistor.
Test 3
TEST3
A
Test 3 pin.
This signal is used for test purposes and must always
be pulled-down to ground via a 4.7 kΩ resistor.
Configuration Straps
Device Mode
Configuration
Straps 2-1
CONFIG_STRAP_[2:1]
I
Device mode configuration straps 2-1.
These configuration straps are used to select the
device’s mode of operation. See Note 3-1.
Refer to Section 3.3.4, "PROG_FUNC[8:1] Configura-
tion (CONFIG_STRAP_[2:1])" for additional information.
Port 4-1 D+
Disable
Configuration
Strap
PRT_DIS_P[4:1]
I
Port 4-1 D+ Disable configuration strap.
These configuration straps are used in conjunction with
the corresponding
PRT_DIS_M[4:1] straps to disable
the related port (5-1). See Note 3-1.
Both USB data pins for the corresponding port must be
tied to 3.3V to disable the associated downstream port.
TABLE 3-2:
PIN DESCRIPTIONS (CONTINUED)
Name
Symbol
Buffer
Type
Description



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