參數(shù)資料
型號(hào)： ISP1181
廠商： NXP Semiconductors N.V.
英文描述： Full-speed Universal Serial Bus Interface Device(全速通用串行總線接口器件)
中文描述： 全速通用串行總線接口設(shè)備（全速通用串行總線接口器件）
文件頁(yè)數(shù)： 18/69頁(yè)
文件大?。?/td> 1655K
代理商： ISP1181
Philips Semiconductors
ISP1181
Full-speed USB interface
Objective specification
Rev. 01 — 13 March 2000
18 of 69
9397 750 06896
Philips Electronics N.V. 2000. All rights reserved.
11. Suspend and resume
11.1 Suspend conditions
The ISP1181 detects a USB ‘suspend’ status in the following cases:
A J-state is present on the USB bus for 3 ms
V
BUS
is lost (weak pull-up/down on D
+
and D
)
SoftConnect is disabled by clearing bit SOFTCT in the Mode Register, with
external pull-ups disabled by EXTPUL = 0 in the Hardware Configuration Register.
In this situation ISP1181 is effectively disconnected from the USB bus.
ISP1181 will remain in ‘suspend’ state for at least 5 ms, before responding to external
wake-up events such as global resume, bus traffic, wake-up on CS or WAKEUP. The
typical timing is shown in
Figure 5
.
Bus-powered devices that are suspended must not consume more than 500
μ
A of
current. This is achieved by shutting down the power to system components or
supplying them with a reduced voltage.
ISP1181 can either be in powered-on or powered-off mode during ‘suspend’ state.
This is controlled by bit PWROFF in the Hardware Configuration Register. A full
explanation of these modes is given in
Section 11.1.1
and
Section 11.1.2
.
The steps leading up to ‘suspend’ status are as follows:
1. Upon detection of a ‘wake-up’ to ‘suspend’ transition ISP1181 sets bit SUSPND
in the Interrupt Register. This will generate an interrupt if bit IESUSP in the
Interrupt Enable Register is set.
2. When the firmware detects a ‘suspend’ condition it must prepare all system
components for ‘suspend’ state:
a. All signals connected to ISP1181 must enter appropriate states to meet the
power consumption requirements of ‘suspend’ state.
b. All input pins of ISP1181 must have a CMOS logic 0 or logic 1 level. Pin
settings differ for powered-on and powered-off application.
3. In the interrupt service routine the firmware must check the current status of the
USB bus. When bit BUSTATUS in the Interrupt Register is logic 0, the USB bus
has left ‘suspend’ mode and the process must be aborted. Otherwise, the next
step can be executed.
Fig 5.
Typical suspend timing.
handbook, full pagewidth
MGS949
WAKEUP
suspend
>5 ms
start detection of
wake-up conditions
相關(guān)PDF資料
PDF描述
ISP1181DGG INDUCTOR 4.7NH +-.3NH 0402 SMD
ISP1183 Low-power Universal Serial Bus interface device with DMA
ISP1183BS Low-power Universal Serial Bus interface device with DMA
ISP1301 Universal Serial Bus On-The-Go transceiver
ISP1301BS Universal Serial Bus On-The-Go transceiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1181A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Full-speed Universal Serial Bus peripheral controller
ISP1181ABS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Full-speed Universal Serial Bus peripheral controller
ISP1181ABS,518 功能描述:USB 接口集成電路 USB 1.1 ADV DEVICE 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
ISP1181ABS,551 功能描述:USB 接口集成電路 USB 1.1 ADVANCED DEVICE 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
ISP1181ABS,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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*