欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號(hào)： ISP1123NB
廠商： NXP SEMICONDUCTORS
元件分類： 總線控制器
英文描述： Universal Serial Bus compound hub
中文描述： UNIVERSAL SERIAL BUS CONTROLLER, PDIP32
封裝： 0.400 INCH, PLASTIC, SDIP-32
文件頁(yè)數(shù)： 9/49頁(yè)
文件大小： 1155K
代理商： ISP1123NB
Philips Semiconductors
ISP1123
USB compound hub
Preliminary specification
Rev. 01 — 5 October 1999
9 of 49
9397 750 06325
Philips Electronics N.V. 1999. All rights reserved.
7.2 Philips Serial Interface Engine (SIE)
The Philips SIE implements the full USB protocol layer. It is completely hardwired for
speed and needs no firmware intervention. The functions of this block include:
synchronization pattern recognition, parallel/serial conversion, bit (de-)stuffing, CRC
checking/generation, Packet IDentifier (PID) verification/generation, address
recognition, handshake evaluation/generation.
7.3 Hub repeater
The hub repeater is responsible for managing connectivity on a ‘per packet’ basis. It
implements ‘packet signalling’ and ‘resume’ connectivity. Low-speed devices can be
connected to downstream ports. If a low-speed device is detected the repeater will
not propagate upstream packets to the corresponding port, unless they are preceded
by a PREAMBLE PID.
7.4 End-of-frame timers
This block contains the specified EOF1 and EOF2 timers which are used to detect
‘loss-of-activity’ and ‘babble’ error conditions in the hub repeater. The timers also
maintain the low-speed keep-alive strobe which is sent at the beginning of a frame.
7.5 General and individual port controller
The general and individual port controllers together provide status and control of
individual downstream ports. Any port status change will be reported to the host via
the hub status change (interrupt) endpoint.
7.6 GoodLink
Indication of a good USB connection is provided through GoodLink technology. An
LED can be directly connected via an external 330
resistor.
During enumeration the LED blinks on momentarily. After successful configuration of
the ISP1123, the LED is permanently on. The LED blinks off for 100 ms upon each
successful packet transfer (with ACK). The hub GoodLink indicator blinks when the
hub receives a packet addressed to it. Downstream GoodLink indicators blink upon
an acknowledgment from the associated port. In ‘suspend’ mode the LED is off.
This feature provides a user-friendly indication of the status of the hub, the connected
downstream devices and the USB traffic. It is a useful diagnostics tool to isolate faulty
USB equipment and helps to reduce field support and hotline costs.
7.7 Bit clock recovery
The bit clock recovery circuit recovers the clock from the incoming USB data stream
using a 4
×
oversampling principle. It is able to track jitter and frequency drift as
specified by the USB Specification Rev. 1.1
7.8 Voltage regulator
A 5 to 3.3 V DC-DC regulator is integrated on-chip to supply the analog transceiver
and internal logic. This can also be used to supply the terminal 1.5 k
pull-up resistor
on the D
+
line of the upstream connection.
相關(guān)PDF資料
PDF描述
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
ISP1160 Embedded Universal Serial Bus Host Controller
ISP1160BD Embedded Universal Serial Bus Host Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1130 制造商:PHILIPS 制造商全稱: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:NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller
ISP1130N 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller
ISP1160 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller
ISP1160BD 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller
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

*
*
*
主站蜘蛛池模板： 罗城| 荔波县| 灵寿县| 陆良县| 客服| 稻城县| 康定县| 泉州市| 乌兰浩特市| 措勤县| 青神县| 娄烦县| 洪泽县| 什邡市| 额济纳旗| 宜宾县| 拜城县| 江都市| 宾川县| 杭州市| 上饶县| 平乐县| 米泉市| 安康市| 南木林县| 怀来县| 阳高县| 宁蒗| 宁国市| 三门峡市| 马尔康县| 平和县| 温泉县| 漯河市| 安溪县| 沐川县| 黑河市| 剑河县| 芦溪县| 临洮县| 万盛区|