參數(shù)資料
型號： ISP1521
廠商： NXP Semiconductors N.V.
英文描述： Hi-Speed Universal Serial Bus hub controller
中文描述： 高速通用串行總線控制器樞紐
文件頁數(shù)： 16/53頁
文件大?。?/td> 270K
代理商： ISP1521
Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
Product data
Rev. 03 — 24 November 2004
16 of 53
9397 750 13702
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Both analog and digital overcurrent modes are supported; see
Table 7
.
For digital overcurrent detection, the normal digital TTL level is accepted on the
overcurrent input pins. For analog overcurrent detection, the threshold is given in the
DC characteristics. In this mode, to filter out false overcurrent conditions because of
in rush and spikes, a dead time of 15 ms is built into the IC, that is, overcurrent must
persist for 15 ms before it is reported to the host.
9.1.4
Non-removable port
A non-removable port, by definition, is a port that is embedded inside the hub
application box and is not externally accessible. The LED port indicators
(pins AMBn_N) of such a port are not used. Therefore, the corresponding amber LED
port indicators are disabled to signify that the port is non-removable; see
Table 8
.
More than one non-removable port can be specified by appropriately connecting the
corresponding amber LED indicators. At least one port should, however, be left as a
removable port.
The detection of any non-removable port sets the hub descriptor into a compound
hub.
9.1.5
Port indicator support
The port indicator support can be disabled by grounding all green port indicators (all
pins GRNn_N); see
Table 9
. This is a global feature. It is not possible to disable port
indicators for only one port.
Table 6:
Power switching mode
None
Global
Overcurrent protection mode pin configuration
NOOC
HIGH
LOW
PSW1_N PSW2_N PSW3_N PSW4_N PSW5_N PSW6_N PSW7_N
ground
ground
ground
ground
internal
pull-up
internal
pull-up
pull-up
pull-up
pull-up
ground
ground
ground
ground
ground
ground
ground
ground
ground
Individual
LOW
internal
internal
internal
internal
pull-up
internal
pull-up
internal
pull-up
Table 7:
Pin ADOC
3.3 Vor 5.0 V
Ground
Overcurrent detection mode selection pin configuration
Mode selection
analog
digital
Description
threshold
V
trip
normal digital TTL level
Table 8:
AMBn_N (n = 1 to 7)
Ground
Pull-up with amber LED
Non-removable port pin configuration
Non-removable port
non-removable
removable
Table 9:
GRN1_N to GRN7_N
Ground
LED pull-up green LED for at least one port
Port indicator support: pin configuration
Port indicator support
not supported
supported
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相關代理商/技術參數(shù)
參數(shù)描述
ISP1521BE 功能描述:IC USB HUB CONTROLLER HS 80-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應商設備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A
ISP1521BE,518 功能描述:USB 接口集成電路 USB2 7-PORT HUB CTRLR RoHS:否 制造商:Cypress Semiconductor 產品: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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1521BE,551 功能描述:USB 接口集成電路 USB2 7 PORT HUB RoHS:否 制造商:Cypress Semiconductor 產品: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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1521BE,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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1521BE518 制造商:ST-Ericsson 功能描述:IC CONTROLLER USB HUB 80LQFP
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