Datasheet

TUSB7320, TUSB7340
SLLSE76E–MARCH 2011– REVISED JULY 2011 www.ti.com
Table 6-58. USB Legacy Support Control/Status Register Description (continued)
13 SMI_OS_EN rw SMI on OS Ownership Enable.
12:5 RSVD r Reserved. Returns zeros when read.
4 SMI_HOST_SYS_ERR_EN rw SMI on Host System Error Enable.
3:1 RSVD r Reserved. Returns zeros when read.
0 USB_SMI_EN rw USB SMI Enable.
6.6.3 xHCI Supported Protocol Capability Register (USB 2.0)
This register indicates that the Supported Protocol Capability is for USB 2.0.
xHCI Extended Capabilities Base register offset:10h
Register type:Read-Only
Default value: 0200 0402h
Table 6-59. xHCI Extended Capabilities Register (xHCI Extended Capabilities Base + 10h)
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
No.
Reset
0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
State
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
No.
Reset
0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0
State
Table 6-60. xHCI Supported Protocol Capability Register (USB 2.0) Description
Bit Field Name Access Description
Major Revision. This field is 02h, since this Supported Protocol Capability
31:24 MAJOR_REV r
is for release 2.0 of the USB specification.
Minor Revision. This field is 00h, since this Supported Protocol Capability
23:16 MINOR_REV r
is for release 2.0 of the USB specification.
Next Capability Pointer. This field is 04h, indicating that the xHCI
15:8 NEXT_CAP r Supported Protocol Capability for USB 3.0 starts at offset 20h from the
xHCI Extended Capabilities Base.
Capability ID. This field is 02h, identifying this capability as a Supported
7:0 CAPABILITY_ID r
Protocol Capability.
6.6.4 xHCI Supported Protocol Name String Register (USB 2.0)
This read only register is set to 2042 5355h, indicating that the Supported Protocol Capability is for USB
2.0.
xHCI Extended Capabilities Base register offset:14h
Register type:Read-Only
Default value: 2042 5355h
94 xHCI MEMORY MAPPED REGISTER SPACE Copyright © 2011, Texas Instruments Incorporated
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Product Folder Link(s): TUSB7320 TUSB7340