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TUSB4041I-Q1 Datasheet(PDF) 20 Page - Texas Instruments

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Part # TUSB4041I-Q1
Description  Four-Port USB 2.0 Hub
Download  44 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TUSB4041I-Q1 Datasheet(HTML) 20 Page - Texas Instruments

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TUSB4041I-Q1
SLLSEK4B – JULY 2015 – REVISED JANUARY 2016
www.ti.com
Product Folder Links: TUSB4041I-Q1
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Copyright © 2015–2016, Texas Instruments Incorporated
8.5.11 Device Configuration Register 2
Offset = Ah
Figure 12. Device Configuration Register 2
7
6
5
4
3
2
1
0
RSVD
customBCfeatu
res
pwrctlPol
HiCurAcpMode
En
cpdEN
RSVD
autoModeEnz
RSVD
R-0
RW-0
RW-X
R/RW-0
R/RW-0
RW-0
RW-X
R-0
Table 13. Device Configuration Register 2 Field Descriptions
Bit
Field
Type
Reset
Description
7
RSVD
R
0
Reserved
Read only, returns 0 when read.
6
customBCfeatures
RW
0
Custom battery charging feature enable
This bit controls the ability to write to the battery charging feature configuration
controls.
0 = The HiCurAcpModeEn and cpdEN bits are read only and the values
are loaded from the OTP ROM.
1 = The HiCurAcpModeEn and cpdEN, bits are R/W and can be loaded
by EEPROM or written by SMBus from this register.
This bit may be written simultaneously with HiCurAcpModeEn and cpdEN.
5
pwrctlPol
RW
X
Power enable polarity
This bit is loaded at the deassertion of reset with the value of the
PWRCTL_POL pin.
0 = PWRCTL polarity is active low.
1 = PWRCTL polarity is active high.
When the TUSB4041I-Q1 device is in I2C mode, the TUSB4041I-Q1 device
loads this bit from the contents of the EEPROM.
When the TUSB4041I-Q1 device is in SMBUS mode, the value may be
overwritten by an SMBus host.
4
HiCurAcpModeEn
R/RW
0
High-current ACP mode enable
This bit enables the high-current tablet charging mode when the automatic
battery charging mode is enabled for downstream ports.
0 = High-current divider mode disabled. Legacy current divider mode
enabled.
1 = High-current divider mode enabled
This bit is read only unless the customBCfeatures bit is set to 1. If
customBCfeatures is 0, the value of this bit reflects the value of the
OTP ROM HiCurAcpModeEn bit.
3
cpdEN
RRW
0
Enable device attach detection
This bit enables device attach detection (such as a cell-phone detect) when
auto mode is enabled.
0 = Device attach detect is disabled in auto mode.
1 = Device attach detect is enabled in auto mode.
This bit is read only unless the customBCfeatures bit is set to 1. If
customBCfeatures is 0, the value of this bit reflects the value of the OTP ROM
cpdEN bit.
2
RSVD
RW
0
Reserved


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