千兆以太網(wǎng)組網(wǎng)ppt課件(參考版)
2025-05-09 12:39本頁面
【正文】 maximum running digital sum ( RDS ) of 3 ? Separate code group for data and control signaling ? A ma for code group synchronization ? Excellent error detection capabilities, especially with CRC 32, the frame check sequence in the MAC frame format ? IBM research Lab 公共物理子層： 協(xié)調(diào)一致 (Reconciliation)和 千兆介質(zhì)獨立接口 (GMII) MAC Client Sublayer LLC,Bridger entity MAC Control ( optional ) MAC Media Access Control Reconciliation GMII PCS PMA SXPMD SXMDI 1000 BaseX PHY Mdium Independent Interface Data Link Medium Dependent Interface 協(xié)調(diào)一致 LXPMD LXMDI CXPMD CXMDI LX 光纖 SX 光纖 150 平衡銅纜 G M I I ( OUTPUT_UNIT) ( SIGNAL_STATUS) (INPUT_UNIT) ( CARRIER_STATUS) ndicate ( DATA_ VALID_STATUS) Reconciliation Sub. Station Mng. PCS:Physical Coding Sublayer Collision Detection TxD ( Data、Control、 Clock) RxD ( Data、Control、 Clock) Carrier Sense Mng Data I/O and Control MAC 物理層信令 (PLS) 物理編碼、物理介質(zhì)附加和自動協(xié)商： MAC Client Sublayer LLC,Bridger entity MAC Control ( optional ) MAC Media Access Control Reconciliation GMII PCS PMA SXPMD SXMDI 1000 BaseX PHY Mdium Independent Interface Data Link Medium Dependent Interface 協(xié)調(diào)一致 LXPMD LXMDI CXPMD CXMDI LX 光纖 SX 光纖 150 平衡銅纜 Memory Memory LAN Control Chip Memory Memory SERDES Chip 10bits 10bits 并行接口 收發(fā)器 PMD PMA PCS MAC 物理層 數(shù)據(jù)鏈路層 MAC、 存儲和接口邏輯8B10B編 /解碼 串行接口 物理編碼子層 ( Physical Coding Sub_layer ) Transmit Carrier Sense Receive AutoNego Sync tx_codegroup9:0 rx_codegroup9:0 SIGNAL_DETECT Sync_status RxD7:0 TxD7:0 COL CRS TX_EN TX_ER GTX_CLK RX_DV RX_ER RX_CLK Transmitting Recieving Xmit see note 并行接口 PMA: Physical Medium Attachment Codegroup Aligment P S變換 S P變換 Loop Back Tx_bit Rx_bit 1250 M codebit / s SIGNAL_DETECT Sync. PMD: Physical Medium Dependent Sublayer Transmitter Tx_bit Rx_bit 1250 M codebit / s SIGNAL_DETECT Recieve Transmit signal Receive signal PMD MDI 光物理介質(zhì)相關 (Optical PMD)子層： ? 光纖 (Optical fiber) ? 光纜和短接線 (Cable and patch cords) ? 連接器 (Connectors) ? 光發(fā)送器 (Optical transmitter) ? 激光源 (Laser light source) ? 激光 纖耦合鏡 (Laser to fiber coupling optics) ? 激光驅動電路 (Laserdrive circuitry) ? MDI連接器座 (MDI connector receptacle) ? 光接收器 (Optical receiver) ? MDI connector receptacle ? 光檢測器 (Photo detector) ? 前置放大和均衡器 (Preamplifier and equalizer) ? 電脈沖再生 (Electrical pulse regenerator) PMD Tx T+ T PMD Rx R+ R splice c c sp patch cords 光纜 MDI MDI ISO/IEC 11801 ： Channel SX： MMF (160/500) SX： MMF (2
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