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High-Speed USB Host Subsystem
Bits
Field Name
Description
Type
Reset
11
P2_ULPI_BYPASS
Host controller (root hub) port 2 control.
RW
0
0x0: ULPI port 2 is active (and UTMI port 2 is inactive)
0x1: UTMI port 2 is active (and ULPI port 2 is inactive)
10
P3_CONNECT_STATUS
Connection status for port 3.
RW
0x1
0x0: USB port 3 is disconnected
0x1: USB port 3 is connected and in use (also the default
state)
9
P2_CONNECT_STATUS
Connection status for port 2.
RW
0x1
0x0: USB port 2 is disconnected
0x1: USB port 2 is connected and in use (also the default
state)
8
P1_CONNECT_STATUS
Connection status for port 1.
RW
0x1
0x0: USB port 1 is disconnected
0x1: USB port 1 is connected and in use (also the default
state)
7:6
RESERVED
Reserved
RW
0x0
5
ENA_INCR_ALIGN
Force alignment of bursts to the respective burst-size
RW
0x0
boundaries
(1)
0x0: Disable burst type
0x1: Enable burst type
4
ENA_INCR16
Control the use of INCR16-type bursts (in AHB sense)
RW
0x0
0x0: Disable burst type
0x1: Enable burst type
3
ENA_INCR8
Control the use of INCR8-type bursts (in AHB sense)
RW
0x0
0x0: Disable burst type
0x1: Enable burst type
2
ENA_INCR4
Control the use of INCR4-type bursts (in AHB sense)
RW
0x0
0x0: Disable burst type
0x1: Enable burst type
1
AUTOPPD_ON_OVERCUR_EN
Configure reaction upon port overcurrent condition
RW
0x0
0x0: Port remains on upon overcurrent
0x1:Port is powered down automatically upon overcurrent
Note: The bit must not be used, and is always written to
with its default (reset) value as the hardware overcurrent
inputs are tied off at device level.
0
P1_ULPI_BYPASS
Host controller (root hub) port 1 control.
RW
0
0x0: ULPI port 1 is active (and UTMI port 1 is inactive)
0x1: UTMI port 1 is active (and ULPI port 1 is inactive)
(1)
This bit must be set to 1 to avoid buffer underflow.
Table 22-161. Register Call Summary for Register UHH_HOSTCONFIG
High-Speed USB Host Subsystem
•
High-Speed USB Host Controller Functionality
[0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]
•
Selecting and Configuring USB Connectivity
[13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29]
•
High-Speed USB Host Subsystem Register Summary
3325
SWPU177N – December 2009 – Revised November 2010
High-Speed USB Host Subsystem and High-Speed USB OTG Controller
Copyright © 2009–2010, Texas Instruments Incorporated