ISP1563 Datasheet, PDF (58/103 Pages) NXP Semiconductors – Hi-Speed Universal Serial Bus PCI Host Controller

NXP Semiconductors
ISP1563
HS USB PCI host controller
Table 83. HcRhStatus - Host Controller Root Hub Status register bit allocation
Address: Content of the base address register + 50h
Bit
31
30
29
28
27
26
Symbol
CRWE
reserved^[1]
Reset
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
Bit
23
22
21
20
19
18
Symbol
reserved^[1]
Reset
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
Bit
15
14
13
12
11
10
Symbol
DRWE
reserved^[1]
Reset
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
Bit
7
6
5
4
3
2
Symbol
reserved^[1]
Reset
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
[1] The reserved bits should always be written with the reset value.
25
0
R/W
17
CCIC
0
R/W
9
0
R/W
1
OCI
0
R
24
0
R/W
16
LPSC
0
R/W
8
0
R/W
0
LPS
0
R/W
Table 84. HcRhStatus - Host Controller Root Hub Status register bit description
Address: Content of the base address register + 50h
Bit
Symbol Description
31
CRWE On write, Clear Remote Wake-up Enable:
0 — No effect
1 — Clears DRWE (Device Remote Wake-up Enable)
30 to 18 reserved -
17
CCIC
Overcurrent Indicator Change: This bit is set by hardware when a change has occurred to the OCI
bit of this register.
0 — No effect
1 — The HCD clears this bit.
16
LPSC On read, Local Power Status Change: The root hub does not support the local power status feature.
Therefore, this bit is always logic 0.
On write, Set Global Power: In global power mode (Power Switching Mode = 0), logic 1 is written to
this bit to turn on power to all ports (clear Port Power Status). In per-port power mode, it sets Port
Power Status only on ports whose Port Power Control Mask bit is not set. Writing logic 0 has no
effect.
15
DRWE On read, Device Remote Wake-up Enable: This bit enables bit Connect Status Change (CSC) as a
resume event, causing a state transition from USBSUSPEND to USBRESUME and setting the
Resume Detected interrupt.
0 — CSC is not a remote wake-up event.
1 — CSC is a remote wake-up event.
On write, Set Remote Wake-up Enable: Writing logic 1 sets DRWE (Device Remote Wake-up
Enable). Writing logic 0 has no effect.
14 to 2 reserved -
ISP1563_3
Product data sheet
Rev. 03 — 18 November 2008
© NXP B.V. 2008. All rights reserved.
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