- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16832 > KSZ9021GN-EVAL (Micrel Inc)BOARD EVALUATION FOR KSZ9021GN PDF資料下載
參數(shù)資料
| 型號： | KSZ9021GN-EVAL |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 11/53頁 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR KSZ9021GN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 接口，以太網(wǎng)控制器（PHY 和 MAC） |
| 嵌入式： | 否 |
| 已用 IC / 零件： | KSZ9021GN |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | 576-3789-ND - TXRX GIG ETH GMII/MII 64-QFN KSZ9021GN TR-ND - TXRX ETHERNET GB GMII/MII 64MLF 576-3635-ND - TXRX ETHERNET GB GMII/MII 64-MLF |
| 其它名稱： | 576-3873 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
Micrel, Inc.
KSZ9021GN
September 2010
19
M9999-091010-1.1
Pair- Swap, Alignment, and Polarity Check
In 1000Base-T mode, the KSZ9021GN
Detects incorrect channel order and automatically restore the pair order for the A, B, C, D pairs (four channels)
Supports 50±10ns difference in propagation delay between pairs of channels in accordance with the IEEE
802.3 standard, and automatically corrects the data skew so the corrected four pairs of data symbols are
synchronized
Incorrect pair polarities of the differential signals are automatically corrected for all speeds.
Wave Shaping, Slew Rate Control and Partial Response
In communication systems, signal transmission encoding methods are used to provide the noise-shaping feature and to
minimize distortion and error in the transmission channel.
For 1000Base-T, a special partial response signaling method is used to provide the band-limiting feature for the
transmission path.
For 100Base-TX, a simple slew rate control method is used to minimize EMI.
For 10Base-T, pre-emphasis is used to extend the signal quality through the cable.
PLL Clock Synthesizer
The KSZ9021GN generates 125MHz, 25MHz and 10MHz clocks for system timing. Internal clocks are generated from
the external 25 MHz crystal or reference clock.
Auto-Negotiation
The KSZ9021GN conforms to the auto-negotiation protocol, defined in Clause 28 of the IEEE 802.3 Specification.
Auto-negotiation allows UTP (Unshielded Twisted Pair) link partners to select the highest common mode of operation.
During auto-negotiation, link partners advertise capabilities across the UTP link to each other, and then compare their
own capabilities with those they received from their link partners. The highest speed and duplex setting that is common
to the two link partners is selected as the mode of operation.
The following list shows the speed and duplex operation mode from highest to lowest.
Priority 1: 1000Base-T, full-duplex
Priority 2: 1000Base-T, half-duplex
Priority 3: 100Base-TX, full-duplex
Priority 4: 100Base-TX, half-duplex
Priority 5: 10Base-T, full-duplex
Priority 6: 10Base-T, half-duplex
If auto-negotiation is not supported or the KSZ9021GN link partner is forced to bypass auto-negotiation for 10Base-T
and 100Base-TX modes, then the KSZ9021GN sets its operating mode by observing the input signal at its receiver.
This is known as parallel detection, and allows the KSZ9021GN to establish link by listening for a fixed signal protocol in
the absence of auto-negotiation advertisement protocol.
The auto-negotiation link up process is shown in the following flow chart.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| V24C8C100BF | CONVERTER MOD DC/DC 8V 100W |
| 342A112-100-0 | BOOT MOLDED |
| H4PXS-2418M | DIP CABLE - HDP24S/AE24M/X |
| H2PXS-2418M | DIP CABLE - HDP24S/AE24M/X |
| 202F274-71-0 | BOOT MOLDED |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KSZ9021GNI | 功能描述:以太網(wǎng) IC Gigabit Ethernet Transceiver with GMII/MII, I-Temp RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ9021GQ | 功能描述:以太網(wǎng) IC Gigabit Ethernet Transceiver with GMII/MII, Lead Free RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ9021GQI | 功能描述:以太網(wǎng) IC Gigabit Ethernet Transceiver w/ GMII/MII, I-Temp RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ9021RL | 功能描述:以太網(wǎng) IC Gigabit Ethernet Transceiver with GMII RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ9021RL-EVAL | 制造商:Micrel Inc 功能描述:GIGABIT ETHERNET TRANSCEIVER W 制造商:Micrel Inc 功能描述:KIT EVALUATION FOR KSZ9021RL |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。