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TUSB4041I-Q1 Datasheet(PDF) 7 Page - Texas Instruments

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Part # TUSB4041I-Q1
Description  Four-Port USB 2.0 Hub
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TUSB4041I-Q1 Datasheet(HTML) 7 Page - Texas Instruments

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7
TUSB4041I-Q1
www.ti.com
SLLSEK4B – JULY 2015 – REVISED JANUARY 2016
Product Folder Links: TUSB4041I-Q1
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Copyright © 2015–2016, Texas Instruments Incorporated
Pin Functions (continued)
PIN
I/O(1)
TYPE(1)
DESCRIPTION
NAME
NO.
TEST AND MISCELLANEOUS SIGNALS
AUTOENz/
HS_SUSPEND
13
I/O
PU
Automatic charge mode enable/HS suspend status
The value of the pin is sampled at the deassertion of reset to determine if automatic
mode is enabled as follows:
0 = Automatic mode is enabled on ports that are enabled for battery charging when
the hub is unconnected. Note that CDP is not supported on port 1 when operating
in automatic mode.
1 = Automatic mode is disabled.
This value is also used to set the autoEnz bit in the Battery Charging Support
Register.
After reset, this signal indicates the high-speed USB Suspend status of the upstream
port if enabled through the Additional Feature Configuration Register. When enabled,
a value of 1 indicates the connection is suspended.
FULLPWRMGMTz/
SMBA1
8
I/O
PD
Full power management enable/SMBus address bit 1
The value of the pin is sampled at the deassertion of reset to set the power switch
control follows:
0 = Power switching and overcurrent inputs supported
1 = Power switching and overcurrent inputs not supported
Full power management is the ability to control power to the downstream ports of the
TUSB4041I-Q1 device using PWRCTL[4:1]/BATEN[4:1].
When SMBus mode is enabled using SMBUSz, this pin sets the value of the SMBus
slave address bit 1.
This pin can be left unconnected if full power management and SMBus are not
implemented.
After reset, this signal is driven low by the TUSB4041I-Q1. Because of this behavior,
TI recommends not to tie directly to supply, but instead pull up or pull down using an
external resistor.
Note: Power switching must be supported for battery charging applications.
GANGED/SMBA2/
HS_UP
10
I/O
PD
Ganged operation enable/SMBus address bit 2/HS connection status upstream port
The value of the pin is sampled at the deassertion of reset to set the power switch
and overcurrent detection mode as follows:
0 = Individual power control supported when power switching is enabled
1 = Power control gangs supported when power switching is enabled
When SMBus mode is enabled using SMBUSz, this pin sets the value of the SMBus
slave address bit 2.
After reset, this signal indicates the high-speed USB connection status of the
upstream port if enabled through the Additional Feature Configuration Register. When
enabled, a value of 1 indicates the upstream port is connected to a high-speed USB
capable port.
Note: Individual power control must be enabled for battery charging applications.
PWRCTL_POL
9
I/O
PU
Power control polarity.
The value of the pin is sampled at the deassertion of reset to set the polarity of
PWRCTL[4:1].
0 = PWRCTL polarity is active low
1 = PWRCTL polarity is active high
RSVD
23, 24,
26, 27,
35, 36,
38, 39,
43, 44,
46, 47,
51, 52,
54, 55,
58, 59,
61, 62
I/O
Reserved. For internal use only and leave unconnected on the PCB.


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