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High-Speed USB Host Subsystem
Bits
Field Name
Description
Type
Reset
18
TESTTXEN
Differential data transmit override value for serial mode
RW
0x0
test
Don't care if TestEn = 0 (functional mode)
0x0: Drive TX according to TestTXDat/Se0
0x1: Drive TX Hiz (no drive: Pullups determine line state)
17
TESTEN
Enable manual test override for serial mode TX path
RW
0x0
(from local controller's UTMI port)
0x0: No override. TX is from local link controller
0x1: Override enabled
16
DRVVBUS
VBUS-drive for ChanMode = serial
RW
0x0
* In TLL config, write 1 to emulate serial-side VBUS drive
* In PHY config, write 1 to report "VBUS valid" status (of
actual VBUS) to UTMI controller
0x0: VBUS not driven
0x1: VBUS driven to 5V
15
CHRGVBUS
VBUS-drive for ChanMode = serial
RW
0x0
* In TLL config, write 1 to emulate serial-side VBUS
charge/pullup (OTG)
* In PHY config, write 1 to reports "session valid" status
(of actual VBUS) to UTMI controller
0x0: VBUS not charged, session not valid
0x1: VBUS charged, session valid
14:12
RESERVED
Reserved
R
0x0
11
ULPINOBITSTUFF
Disable bitstuff emulation in ULPI TLL for ULPI
RW
0x0
ChanMode
0x0: Bitstuff enabled, following USB standard
0x1: No bitstuff or associated delays (non-standard)
10
ULPIAUTOIDLE
For ChanMode = ULPI TLL only. Allow the ULPI output
RW
0x1
clock to be stopped when ULPI goes into asynchronous
mode (low-power, 3-pin serial, 6-pin serial). No effect in
ULPI input clock mode.
0x0: ULPI output clock always-on
0x1: ULPI output clock stops during asynchronous ULPI
modes
9
UTMIAUTOIDLE
For ChanMode = ULPI TLL only. Allow the UTMI clock
RW
0x1
(output) to be stopped when UTMII goes to suspended
mode (suspendm = 0)
0x0: UTMI clock output always on
0x1: UTMI clock output gated upon suspend
8
ULPIDDRMODE
Select single/double data rate (SDR/DDR) mode for ULPI
RW
0x0
TLL
Reset value depends on hardware generics
ULPI_SDR/DDR_MODE.
0x0: SDR mode (8 data bit/12 pin)
0x1: DDR mode (4 data bit/8 pin)
7
ULPIOUTCLKMODE
ULPI clocking mode select for ULPI TLL ChanMode
RW
0x1
0x0: ULPI clock provided by LINK (that is, off-chip). ULPI
clock is input
0x1: ULPI clock provided by PHY side (that is, TLL, from
functional clock). ULPI clock is output
6
TLLFULLSPEED
Sets PHY speed emulation in TLL (full/slow), which
RW
0x1
determines the line to pull up upon connect. The two
connect source controls are: Input m(N)_tllpuen, register
field TllConnect.
0x0: Connect is Low-speed: D– pullup
0x1: Connect is Full-Speed: D+ pullup
3295
SWPU177N – December 2009 – Revised November 2010
High-Speed USB Host Subsystem and High-Speed USB OTG Controller
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
Страница 174: ...174 List of Tables SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 692: ...692 MPU Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1084: ...1084 IVA2 2 Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1990: ...1990 2D 3D Graphics Accelerator SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2334: ...2334 Memory Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2700: ...2700 Memory Management Units SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2868: ...2868 HDQ 1 Wire SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2974: ...2974 UART IrDA CIR SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3054: ...3054 Multichannel SPI SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3462: ...3462 MMC SD SDIO Card Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3508: ...3508 General Purpose Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3584: ...3584 Initialization SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3648: ...3648 Debug and Emulation SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...