isp1564 NXP Semiconductors, isp1564 Datasheet - Page 54

• Manufacturer Part Number: isp1564
• Description: Isp1564 Hi-speed Universal Serial Bus Pci Host Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
[1]
Table 84.
Address: Content of the base address register + 44h
Table 85.
Address: Content of the base address register + 48h
ISP1564_1
Product data sheet
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
31 to 12
11 to 0
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
The reserved bits must always be written with the reset value.
HcLSThreshold - Host Controller Low-Speed Threshold register bit description
HcRhDescriptorA - Host Controller Root Hub Descriptor A register bit allocation
Symbol
reserved
LST[11:0]
11.1.19 HcRhDescriptorA register
R/W
R/W
R/W
R/W
R/W
R/W
23
15
31
23
15
0
0
7
0
1
0
0
This register is the first of two registers describing the characteristics of the root hub.
Reset values are implementation-specific.
Table 85
Description
-
LS Threshold: This field contains a value that is compared to the FR[13:0] field, before initiating
a low-speed transaction. The transaction is started only if FR
by the HCD, considering the transmission and set-up overhead.
reserved
R/W
R/W
R/W
R/W
R/W
R/W
22
14
30
22
14
0
0
6
0
1
0
0
contains the bit allocation of the HcRhDescriptorA register.
reserved
[1]
[1]
R/W
R/W
R/W
R/W
R/W
R/W
21
13
29
21
13
0
0
5
1
1
0
0
Rev. 01 — 4 December 2006
NOCP
R/W
R/W
R/W
R/W
R/W
R/W
20
12
28
20
12
0
0
4
0
1
0
0
POTPGT[7:0]
reserved
reserved
LST[7:0]
[1]
[1]
OCPM
R/W
R/W
R/W
R/W
R/W
R/W
19
11
27
19
11
0
0
3
1
1
0
1
R/W
R/W
R/W
R/W
R/W
DT
18
10
26
18
10
R
0
1
2
0
1
0
0
this field. The value is calculated
HS USB PCI Host Controller
LST[11:8]
NPS
R/W
R/W
R/W
R/W
R/W
R/W
17
25
17
0
9
1
1
0
1
0
9
0
© NXP B.V. 2006. All rights reserved.
ISP1564
PSM
R/W
R/W
R/W
R/W
R/W
R/W
16
24
16
0
8
0
0
0
1
0
8
1
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