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TUSB7340 数据表(PDF) 56 Page - Texas Instruments

部件名 TUSB7340
功能描述  TUSB73x0 USB 3.0 xHCI Host Controller
PDF  122 Pages
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制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

TUSB7340 数据表(HTML) 56 Page - Texas Instruments

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8.1.41 Device Status Register
The Device Status Register controls PCI Express device specific parameters.
PCI register offset: 7Ah
Register type: Read Only, Clear by a Write of One, Hardware Update
Default value: 00x0h
Table 8-57. PCI Register 7Ah
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
0
0
0
0
0
0
x
0
0
0
0
Table 8-58. Device Status Register Description
BIT
FIELD NAME
ACCESS
DESCRIPTION
15:6
RSVD
r
Reserved. Return zeros when read.
5
PEND
ru
Transaction Pending.
4
APD
ru
AUX Power Detected. This bit indicates that AUX power is present.
0 – No AUX power detected. (AUX_DET pin is 0)
1 – AUX power detected. (AUX_DET pin is 1)
This bit is set based upon the state of the AUX_DET pin.
3
URD
rcu
Unsupported Request Detected.
2
FED
rcu
Fatal Error Detected.
1
NFED
rcu
Non-Fatal Error Detected.
0
CED
rcu
Correctable Error Detected.
8.1.42 Link Capabilities Register
The Link Capabilities Register indicates the link specific capabilities of the TUSB73X0.
PCI register offset: 7Ch
Register type: Read-only
Default value: 0007 xC12h
Table 8-59. PCI Register 7Ch
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
1
1
1
Bit
No.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
State
0
x
x
1
1
1
0
0
0
0
0
1
0
0
1
0
Table 8-60. Link Capabilities Register Description
BIT
FIELD NAME
ACCESS
DESCRIPTION
31:24
PORT_NUM
r
Port Number. This field indicates port number for the PCI Express link.
This field is read only 00h indicating that the Link is associated with port
zero.
23:19
RSVD
r
Reserved. Returns zeros when read.
18
CLK_PM
r
Clock Power Management. This bit is hardwired to 1 to indicate that the
TUSB73X0 supports Clock Power Management through the CLKREQ#
protocol.
TUSB7320, TUSB7340
SLLSE76Q – MARCH 2011 – REVISED MARCH 2024
www.ti.com
56
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Copyright © 2024 Texas Instruments Incorporated
Product Folder Links: TUSB7320 TUSB7340



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