- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1932 > KSZ9021GQI (Micrel Inc)TXRX GIG ETH GMII/MII 128-PQFP PDF資料下載
參數(shù)資料
| 型號： | KSZ9021GQI |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 16/59頁 |
| 文件大?。?/td> | 0K |
| 描述： | TXRX GIG ETH GMII/MII 128-PQFP |
| 標(biāo)準(zhǔn)包裝： | 66 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 8/8 |
| 規(guī)程： | 千兆位以太網(wǎng) |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 128-BFQFP |
| 供應(yīng)商設(shè)備封裝： | 128-PQFP（14x20） |
| 包裝： | 托盤 |
| 其它名稱： | 576-3790 |
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頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第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頁第54頁第55頁第56頁第57頁第58頁第59頁
Micrel, Inc.
KSZ9021GQ
September 2010
23
M9999-091010-1.2
Pair- Swap, Alignment, and Polarity Check
In 1000Base-T mode, the KSZ9021GQ
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 4-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 KSZ9021GQ generates 125 M
Ηz, 25 MΗz and 10 MΗz clocks for system timing. Internal clocks are generated from
the external 25 MHz crystal or reference clock.
Auto-Negotiation
The KSZ9021GQ 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 KSZ9021GQ link partner is forced to bypass auto-negotiation for 10Base-T and
100Base-TX modes, then the KSZ9021GQ sets its operating mode by observing the input signal at its receiver. This is
known as parallel detection, and allows the KSZ9021GQ 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 |
|---|---|
| KSZ9021RL | IC TXRX 10/100/1000 SGL 64LQFP |
| KSZ9692PB | IC ARM9 PHY 5MBPS 400-PBGA |
| KSZ9692XPB | IC ARM9 PHY 5MBPS 400-PBGA |
| KXPC823ZT81B2T | IC MPU POWERQUICC 81MHZ 256-PBGA |
| KXPC8240RVV250E | IC MPU INTEGRATED 250MHZ 352TBGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| KSZ9021RLI | 功能描述:以太網(wǎng) IC Gigabit Ethernet Transceiver with RGMII, 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 |
| KSZ9021RN | 功能描述:以太網(wǎng) IC Gigabit Ethernet Transceiver with RGMII, 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 |
| KSZ9021RN-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 Gigabit Ethernet Transceiver with RGMII - Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。