Datasheet
TUSB1210
www.ti.com
SLLSE09F –NOVEMBER 2009–REVISED AUGUST 2012
7 6 5 4 3 2 1 0
DRVVBUS
IDPULLUP
CHRGVBUS
DPPULLDOWN
DMPULLDOWN
DISCHRGVBUS
DRVVBUSEXTERNAL
USEEXTERNALVBUSINDICATOR
BITS FIELD NAME DESCRIPTION TYPE RESET
7 USEEXTERNALVBUSINDICA Tells the PHY to use an external VBUS over-current indicator. RW 0
TOR
0b: Use the internal OTG comparator (VA_VBUS_VLD) or internal
VBUS valid indicator (default)
1b: Use external VBUS valid indicator signal.
6 DRVVBUSEXTERNAL Selects between the internal and the external 5 V VBUS supply. RW 0
0b: Pin17 (CPEN) is disabled (output GND level). TUSB1210 does
not support internal VBUS supply.
1b: Pin17 (CPEN) is set to ‘1’ (output VDD33 voltage level) if
DRVVBUS bit is ‘1’, else Pin17 (CPEN) is disabled (output GND
level) if DRVVBUS bit is ‘0’
5 DRVVBUS VBUS output control bit RW 0
0b : do not drive VBUS
1b : drive 5V on VBUS
Note: Both DRVVBUS and DRVVBUSEXTERNAL bits must be set
to 1 in order to to set Pin17 (CPEN). CPEN pin can be used to
enable an external VBUS supply
4 CHRGVBUS Charge VBUS through a resistor. Used for VBUS pulsing SRP. The RW 0
Link must first check that VBUS has been discharged (see
DischrgVbus register bit), and that both D+ and D- data lines have
been low (SE0) for 2ms.
0b : do not charge VBUS
1b : charge VBUS
3 DISCHRGVBUS Discharge VBUS through a resistor. If the Link sets this bit to 1, it RW 0
waits for an RX CMD indicating SessEnd has transitioned from 0 to
1, and then resets this bit to 0 to stop the discharge.
0b : do not discharge VBUS
1b : discharge VBUS
2 DMPULLDOWN Enables the 15k Ohm pull-down resistor on D-. RW 1
0b : Pull-down resistor not connected to D-.
1b : Pull-down resistor connected to D-.
1 DPPULLDOWN Enables the 15k Ohm pull-down resistor on D+. RW 1
0b : Pull-down resistor not connected to D+.
1b : Pull-down resistor connected to D+.
0 IDPULLUP Connects a pull-up to the ID line and enables sampling of the signal RW 0
level.
0b : Disable sampling of ID line.
1b : Enable sampling of ID line.
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