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TUSB7340 Datasheet(PDF) 106 Page - Texas Instruments

Part # TUSB7340
Description  TUSB73x0 USB 3.0 xHCI Host Controller
PDF  122 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

TUSB7340 Datasheet(HTML) 106 Page - Texas Instruments

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8.3.6.5 xHCI Supported Protocol Port Register (USB 2.0)
This register indicates how many USB 2.0 ports are supported and what their port numbers are.
xHCI Extended Capabilities Base register offset: 18h
Register type: Read-Only
Default value: 0001 0X01h
Table 8-188. xHCI Extended Capabilities Register (xHCI Extended Capabilities Base + 18h)
Bit
No.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reset
State
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Bit
No.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
State
0
0
0
0
0
x
x
0
0
0
0
0
0
0
0
1
Table 8-189. xHCI Supported Protocol Capability Register (USB 2.0) Description
BIT
FIELD NAME
ACCESS
DESCRIPTION
31:19
RSVD
r
Reserved. Returns zeros when read.
18
IHI
r
Integrated Hub Implemented. This field is 0 to indicate that the root hub
to external port mapping adheres to the default mapping in the xHCI
Specification.
17
HSO
r
High-speed Only. This field is 0 to indicate that the USB 2.0 ports are
Low-, Full-, and High-speed capable.
16
L1C
r
L1 Capability. This field is 1 to indicate that the TUSB73X0 supports the
USB 2.0 Link Power Management L1 state.
15:8
COMPATIBLE_PORT_CNT
r
Compatible Port Count. For the TUSB7340, this field is 04h to indicate
that four USB 2.0 ports are supported. For the TUSB7320, this field is
02h to indicate that two USB 2.0 ports are supported.
7:0
COMPATIBLE_PORT_OFF
r
Compatible Port Offset. This field is 01h to indicate that the first USB 2.0
port is port 1.
TUSB7320, TUSB7340
SLLSE76Q – MARCH 2011 – REVISED MARCH 2024
www.ti.com
106
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Copyright © 2024 Texas Instruments Incorporated
Product Folder Links: TUSB7320 TUSB7340



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