usb-025
Device
Full-Speed/Low-Speed
USB controller
4-pin bidirectional
(Tx=DP/DM)
RCV
DM
DP
TxEN
x is the USB port number (1, 2 or 3)
mmx_txdat
mmx_txse0
mmx_rxrcv
mmx_rxdp
mmx_txen_n
mmx_rxdm
NC
NC
usb-026
Device
USB device
(full-speed)
4-pin bidirectional
mmx_txdat
mmx_txse0
TXEN
DP
DM
RCV
2-pin bidirectional TLL using DP/DM encoding,
against full-speed USB device
Device
USB device
(low-speed)
4-pin bidirectional
mmx_txdat
mmx_txse0
TXEN
DP
DM
RCV
2-pin bidirectional TLL using DP/DM encoding,
against low-speed USB device
mmx_rxrcv
mmx_txen_n
mmx_txen_n
mmx_rxdp
mmx_rxdm
mmx_rxrcv
mmx_rxdp
mmx_rxdm
x is the USB port number (1, 2 or 3)
x is the USB port number (1, 2 or 3)
Public Version
High-Speed USB Host Subsystem
www.ti.com
Figure 22-27. 4-Pin Bidirectional TLL Using DP/DM Signaling
The 2-pin TLL configurations have unique specifications:
•
They require pullups/pulldowns to operate, because the bidirectional lines are not driven at all times
like the other serial transceiver interfaces described above. The connection of pull resistors depends
on the speed of the controller.
•
The module supports explicit 2-pin TLL modes, with either DAT/SE0 or DP/DM encoding.
•
Non-TLL modes (that is, transceiver configuration mode) can be used to implement the 2-pin
functionality, using a specific connectivity.
shows USB port using DP/DM encoding.
Figure 22-28. 2-Pin Bidirectional TLL Using DP/DM Encoding, With 4-Pin Bidirectional USB Device
shows the pullup/pulldown configuration for DP/DM encoding.
3256
High-Speed USB Host Subsystem and High-Speed USB OTG Controller
SWPU177N – December 2009 – Revised November 2010
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 ...