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TUSB8043 数据表(PDF) 5 Page - Texas Instruments

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部件名 TUSB8043
功能描述  Four-Port USB 3.1 Gen1 Hub
PDF  59 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TUSB8043 数据表(HTML) 5 Page - Texas Instruments

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TUSB8043
www.ti.com
SLLSEW4 – JUNE 2017
Product Folder Links: TUSB8043
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
Pin Functions
PIN
I/O
DESCRIPTION
NAME
NO.
Clock and Reset Signals
GRSTz
50
I
PU
Global power reset. This reset brings all of the TUSB8043 internal registers to their default
states. When GRSTz is asserted, the device is completely nonfunctional.
XI
62
I
Crystal input. This pin is the crystal input for the internal oscillator. The input may alternately
be driven by the output of an external oscillator. When using a crystal a 1-M
Ω feedback
resistor is required between XI and XO.
XO
61
O
Crystal output. This pin is the crystal output for the internal oscillator. If XI is driven by an
external oscillator this pin may be left unconnected. When using a crystal a 1-M
Ω feedback
resistor is required between XI and XO.
USB Upstream Signals
USB_SSTXP_UP
55
O
USB SuperSpeed transmitter differential pair (positive)
USB_SSTXM_UP
56
O
USB SuperSpeed transmitter differential pair (negative)
USB_SSRXP_UP
58
I
USB SuperSpeed receiver differential pair (positive)
USB_SSRXM_UP
59
I
USB SuperSpeed receiver differential pair (negative)
USB_DP_UP
53
I/O
USB High-speed differential transceiver (positive)
USB_DM_UP
54
I/O
USB High-speed differential transceiver (negative)
USB_R1
64
I
Precision resistor reference. A 9.53-k
Ω ±1% resistor should be connected between USB_R1
and GND.
USB_VBUS
48
I
USB upstream port power monitor. The VBUS detection requires a voltage divider. The signal
USB_VBUS must be connected to VBUS through a 90.9-K
Ω ±1% resistor, and to ground
through a 10-k
Ω ±1% resistor from the signal to ground.
USB Downstream Signals
USB_SSTXP_DN1
3
O
USB SuperSpeed transmitter differential pair (positive)
USB_SSTXM_DN1
4
O
USB SuperSpeed transmitter differential pair (negative)
USB_SSRXP_DN1
6
I
USB SuperSpeed receiver differential pair (positive)
USB_SSRXM_DN1
7
I
USB SuperSpeed receiver differential pair (negative)
USB_DP_DN1
1
I/O
USB High-speed differential transceiver (positive)
USB_DM_DN1
2
I/O
USB High-speed differential transceiver (negative)
PWRCTL1/BATEN1
36
I/O, PD
USB Port 1 Power On Control for Downstream Power/Battery Charging Enable. The pin is
used for control of the downstream power switch for Port 1. This pin be left unconnected if
power management is not implemented.
In addition, the value of the pin is sampled at the de-assertion of reset to determine the value
of the battery charging support for Port 1 as indicated in the Battery Charging Support
register:
0 = Battery charging not supported
1 = Battery charging supported
OVERCUR1z
46
I, PU
USB Port 1 Over-Current Detection. This pin is typically connected to the over current output
of the downstream port power switch for Port 1.
0 = An over current event has occurred
1 = An over current event has not occurred
When GANGED power management is enabled, this pin or one of the other OVERCURz pins
must be connected to the over current output of the power switch or circuit which detects the
over current conditions. For the case when another OVERCURz pin is used, this pin can be
left unconnected.
USB_SSTXP_DN2
11
O
USB SuperSpeed transmitter differential pair (positive)
USB_SSTXM_DN2
12
O
USB SuperSpeed transmitter differential pair (negative)
USB_SSRXP_DN2
14
I
USB SuperSpeed receiver differential pair (positive)
USB_SSRXM_DN2
15
I
USB SuperSpeed receiver differential pair (negative)
USB_DP_DN2
9
I/O
USB High-speed differential transceiver (positive)
USB_DM_DN2
10
I/O
USB High-speed differential transceiver (negative)



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