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STULPI01A 数据表(PDF) 34 Page - STMicroelectronics

部件名 STULPI01A
功能描述  High speed USB On-The-Go ULPI transceiver
PDF  44 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STULPI01A 数据表(HTML) 34 Page - STMicroelectronics

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ULPI registers
STULPI01A - STULPI01B
34/44
Table 19.
OTG control register
0Ah-0Ch(Read), 0Ah(Write), 0Bh(Set), 0Ch(Clear)
(Controls UTMI + OTG functions of the PHY)
Field name
Bits
Access
Reset
Description
IdPullup
0
rd/wr/s/c
0b
Connects a pull-up to the ID line and enables sampling of the
signal level.
0b: Disables sampling of ID line.
1b: Enables sampling of ID line.
DpPulldown
1
rd/wr/s/c
1b
Enables the 15kOhm pull-down resistor on DP.
0b: Pull-down resistor not connected to DP.
1b: Pull-down resistor connected to DP.
DmPulldown
2
rd/wr/s/c
1b
Enables the 15kOhm pull-down resistor on DM.
0b: Pull-down resistor not connected to DM.
1b: Pull-down resistor connected to DM.
DischrgVbus
3
rd/wr/s/c
0b
Discharges VBUS through a resistor. If the link sets this bit to 1,
it waits for an RX CMD indicating SessEnd has transition from 0
to 1, and then resets this bit to 0 to stop the discharge.
0b: Do not discharge VBUS
1b: Discharge VBUS
ChrgVbus
4
rd/wr/s/c
0b
Charge VBUS through a resistor. Used for VBUS pulsing SRP.
0b: Do not charge VBUS
1b: Charge VBUS
DrvVbus
5
rd/wr/s/c
0b
Signals the internal charge pump or external supply to drive 5V
on VBUS.
0b: Do not drive VBUS (default)
1b: Drive 5V on VBUS
DrvVbus External
6
rd/wr/s/c
0b
Selects between the internal and the external 5V VBUS supply.
0b: Drive VBUS using the internal charge pump (default).
1b: Drive VBUS using external supply.
UseExternal
VbusIndicator
7
rd/wr/s/c
0b
Tells STULPI01 to use an external VBUS over-current indicator.
0b: Use the internal OTG comparator or internal
VBUS valid indicator (default)
1b: Use external VBUS valid indicator signal



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