- 您现在的位置：买卖IC网 > PDF目录67685 > ICS1890Y-14 1 CHANNEL(S), 100M bps, SERIAL COMM CONTROLLER, PQFP64 PDF资料下载
参数资料
| 型号： | ICS1890Y-14 |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 1 CHANNEL(S), 100M bps, SERIAL COMM CONTROLLER, PQFP64 |
| 封装： | TQFP-64 |
| 文件页数： | 4/66页 |
| 文件大小： | 1749K |
| 代理商： | ICS1890Y-14 |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页
12
ICS1890
100Base-T Physical Media Access [PMA]
Clock Recovery
The Clock Recovery block locks onto the incoming data stream,
extracts the embedded clock, and presents the data synchronized
to the recovered clock. This process produces signals with
very low timing uncertainty and noise (jitter).
In the event that the PLL is unable to lock on to the receive
signal, it generates a not locked signal. The transmit clock
synthesizer provides a center frequency reference for operation
of the clock recovery circuit in the absence of data. The
receive signal detected and not locked signals are both
used by the logic which monitors the receive channel for
errors.
Transmit Clock Synthesizer
The ICS1890 synthesizes the transmit clock using a PLL to
produce 2.5 MHz for 10Base-T and 25 MHz for 100Base-TX.
Internal clock frequencies of 20 MHz and 125 MHz are also
generated. This allows the use of a low cost 25 MHz crystal
oscillator for a low jitter reference frequency.
Signal Detector
The ICS1890 Signal Detector is part of the clock recovery
PLL. It detects a Receive Signal Error if no receive signal is
received and detects a PLL Lock Error if the PLL is unable to
lock on to the receive channel signal. A receive channel error
is defined as the loss of receive signal or the loss of PLL lock.
Remote Fault Signaling Remote fault signaling allows a
link partner to signal receive channel errors on its transmit
channel. It is then possible to establish the integrity of both
the transmit and receive channels. If auto-negotiation is enabled,
the ICS1890 monitors the receive channel for Fast Link
Pulses or Normal Link Pulses. If an error is detected, the
remote error condition is signaled.
The ICS1890 is able to report a remote fault detected by its
link partner. When the link partner is an ICS1890, a remote
fault will be signaled when it detects a receive signal error. The
definition of a remote fault for a non-ICS1890 link partner is
undefined, but generally will mean that there is a problem with
the integrity of the link partners receive channel.
相关PDF资料 |
PDF描述 |
|---|---|
| ICS2059GI-02 | 27 MHz, VIDEO CLOCK GENERATOR, PDSO16 |
| ICS2304NZGI-1T | 2304 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| ICS2304NZG-1LF | 2304 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| ICS252MI-XXLF | 200 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| ICS252MI-XX | 200 MHz, OTHER CLOCK GENERATOR, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS1890Y-4 | 制造商:ICS 功能描述:1890Y-4 |
| ICS1891 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LAN Transceiver |
| ICS1891Y | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LAN Transceiver |
| ICS1892 | 制造商:ICS 制造商全称:ICS 功能描述:10Base-T/100Base-TX Integrated PHYceiver |
| ICS1892Y | 制造商:ICS 制造商全称:ICS 功能描述:10Base-T/100Base-TX Integrated PHYceiver |
发布紧急采购，3分钟左右您将得到回复。