參數(shù)資料
型號(hào)： ISP1561
廠商： NXP Semiconductors N.V.
英文描述： ISP1561BM
中文描述： ISP1561BM
文件頁(yè)數(shù)： 56/102頁(yè)
文件大?。?/td> 2875K
代理商： ISP1561
Philips Semiconductors
ISP1561
USB PCI host controller
Product data
Rev. 01 — 06 February 2003
56 of 102
9397 750 10015
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
11.1.18
HcLSThreshold register (address: value read from func0 or func1 of address
10H
+
44H)
This register contains an 11-bit value used by the Host Controller to determine
whether to commit to the transfer of a maximum of 8-byte LS packet before EOF.
Neither the Host Controller nor the HCD are allowed to change this value. The bit
allocation of the HcLSThreshold register is given in
Table 76
.
11.1.19
HcRhDescriptorA register (address: value read from func0 or func1 of address
10H
+
48H)
The HcRhDescriptorA register is the first of two registers describing the
characteristics of the Root Hub. Reset values are implementation-specific. The
descriptor length (11), descriptor type (TBD) and hub controller current (0) fields of
the hub Class Descriptor are emulated by the HCD. All other fields are located in the
HcRhDescriptorA and HcRhDescriptorB registers.
Table 78
contains the bit allocation
of the HcRhDescriptorA register.
Table 76:
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
HcLSThreshold register: bit allocation
31
30
29
28
27
26
25
24
reserved
0
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
23
22
21
20
19
18
17
16
reserved
0
-
0
-
0
-
0
-
0
-
0
-
0
-
9
0
-
8
15
14
13
12
11
10
reserved
LST[11:8]
0
-
7
0
-
6
0
-
5
0
-
4
0
1
1
0
R/W
3
R/W
2
R/W
1
R/W
0
LST[7:0]
0
0
1
0
1
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 77:
Bit
31 to 12
11 to 0
HcLSThreshold register: bit description
Symbol
Description
-
reserved
LST[11:0]
LSThreshold
: This field contains a value that is compared to the
FR (FrameRemaining) field prior to initiating a low-speed
transaction. The transaction is started only if FR
≥
this field. The
value is calculated by the HCD with the consideration of
transmission and setup overhead.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1561 HI-SPEED USB H 制造商:NXP Semiconductors 功能描述:
ISP1561BM 制造商:NXP Semiconductors 功能描述:
ISP1561BM,518 功能描述:USB 接口集成電路 USB 2.0 HOST CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1561BM,551 功能描述:USB 接口集成電路 USB 2.0 HOST CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1561BM,557 功能描述:USB 接口集成電路 DO NOT USE ORDER -S OR -T PART RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
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