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參數(shù)資料
型號(hào)： ISP1123
廠商： NXP Semiconductors N.V.
英文描述： Universal Serial Bus compound hub
中文描述： 通用串行總線復(fù)合樞紐
文件頁(yè)數(shù)： 17/49頁(yè)
文件大小： 1155K
代理商： ISP1123
Philips Semiconductors
ISP1123
USB compound hub
Preliminary specification
Rev. 01 — 5 October 1999
17 of 49
9397 750 06325
Philips Electronics N.V. 1999. All rights reserved.
[1]
ISP1123 always reports power management status on an individual basis, even for ganged/global
modes. This is compliant with USB Specification Rev. 1.1
Condition with no overcurrent detection is reported to the host.
Value in units of 2 ms.
[2]
[3]
Table 14: Hub descriptor
Values in square brackets are optional.
Offset
(bytes)
0
bDescLength
1
bDescriptorType
2
bNbrPorts
Field name
Size
(bytes)
1
1
1
Value
(Hex)
09
29
05 to 02 number of enabled downstream ports;
selectable by DP/DM strapping
0D, 00
individual power switching
[1]
,
overcurrent protection active
(modes 0, 1, 3, 4, 5, 7), hub is part of a
compound device
15, 00
individual power switching
[1]
, no
overcurrent protection (modes 2, 6)
[2]
,
hub is part of a compound device
32
100 ms (default; modes 0, 1, 2, 4, 5, 6)
00
0 ms (default; modes 3, 7)
[FA]
500 ms (using an external EEPROM;
modes 0, 1, 2, 4, 5, 6); see
Table 23
64
maximum hub controller current
(100 mA)
02
port 1 is non-removable
FF
must be all ones for compatibility with
USB Specification Rev. 1.0
Comments
descriptor length = 9 bytes
type = HUB
3
wHubCharacteristics
2
5
bPwrOn2PwrGood
[3]
1
6
bHubContrCurrent
1
7
8
DeviceRemovable
PortPwrCtrlMask
1
1
Table 15: String descriptors
String descriptors are optional and therefore disabled by default; they can be enabled through
an external EEPROM.
Offset
(bytes)
(bytes)
(Hex)
String descriptor (0): language ID string
0
bLength
1
04
1
bDescriptorType
1
03
2
bString
2
09, 04
String descriptor (1): manufacturer string
0
bLength
1
2E
1
bDescriptorType
1
03
2
bString
44
UC
[1]
Field name
Size
Value
Comments
descriptor length = 4 bytes
type = STRING
LANGID code zero
descriptor length = 46 bytes
type = STRING
“Philips Semiconductors”
相關(guān)PDF資料
PDF描述
ISP1123D Universal Serial Bus compound hub
ISP1123NB Universal Serial Bus compound hub
ISP1130 Universal Serial Bus compound hub with integrated keyboard controller
ISP1130DL Universal Serial Bus compound hub with integrated keyboard controller
ISP1130N Universal Serial Bus compound hub with integrated keyboard controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1123BD 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus compound hub
ISP1123D 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus compound hub
ISP1123NB 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus compound hub
ISP1130 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller
ISP1130DL 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller
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