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TUSB8042AI Datenblatt(PDF) 6 Page - Texas Instruments

Teilenummer TUSB8042AI
Bauteilbeschribung  TUSB8042A Four-Port USB 3.2 x1 Gen1 Hub
PDF  64 Pages
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Hersteller  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
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TUSB8042AI Datenblatt(HTML) 6 Page - Texas Instruments

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Table 5-1. Pin Functions (continued)
PIN
I/O
DESCRIPTION
NAME
NO.
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. Connect a 9.53kΩ ±1% resistor 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 90.9KΩ ±1% resistor, and to ground
through a 10kΩ ±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 deassertion 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 Overcurrent Detection. This pin is typically connected to the overcurrent output of
the downstream port power switch for Port 1.
0 = An overcurrent event has occurred
1 = An overcurrent event has not occurred
When GANGED power management is enabled, this pin or one of the other OVERCURz pins
must be connected to the overcurrent output of the power switch or circuit which detects the
overcurrent 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)
PWRCTL2/BATEN2
35
I/O, PD
USB Port 2 Power On Control for Downstream Power/Battery Charging Enable. The pin is
used for control of the downstream power switch for Port 2. This pin be left unconnected if
power management is not implemented.
In addition, the value of the pin is sampled at the deassertion of reset to determine the
value of the battery charging support for Port 2 as indicated in the Battery Charging Support
register:
0 = Battery charging not supported
1 = Battery charging supported
TUSB8042A
SLLSF93A – JUNE 2019 – REVISED JANUARY 2025
www.ti.com
6
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Copyright © 2025 Texas Instruments Incorporated
Product Folder Links: TUSB8042A



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