Datasheet

TUSB7320, TUSB7340

www.ti.com

SLLSE76E–MARCH 2011– REVISED JULY 2011

Table 6-67. xHCI Extended Capabilities Register (xHCI Extended Capabilities Base + 28h)

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 0 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 x x 0 0 0 0 0 0 x x 1

State

Table 6-68. xHCI Supported Protocol Capability Register (USB 3.0) Description

Bit Field Name Access Description

31:19 RSVD r Reserved. Returns zeros when read.

Integrated Hub Implemented. This field is ‘0’ to indicate that the root hub

18 IHI r to external port mapping adheres to the default mapping in the xHCI

Specification.

17 HSO r High-speed Only. This field is not applicable to USB 3.0 and is ‘0’.

16 L1C r L1 Capability. This field is not applicable to USB 3.0 and is ‘0’.

Compatible Port Count. For the TUSB7340 , this field is 04h to indicate

15:8 COMPATIBLE_PORT_CNT r that four USB 3.0 ports are supported. For the TUSB7320, this field is

02h to indicate that two USB 3.0 ports are supported.

Compatible Port Offset. For the TUSB7340 , this field is 05h to indicate

7:0 COMPATIBLE_PORT_OFF r that the first USB 3.0 port is port 5. For the TUSB7320, this field is 03h to

indicate that the first USB 3.0 port is port 3.

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Product Folder Link(s): TUSB7320 TUSB7340