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首页BCM5482S:集成型千兆以太网PHY数据手册
标题:"Broadcom PHY BCM5482S 数据表(开发用)"
该数据表介绍了Broadcom生产的BCM5482S双速千兆以太网收发器,它是一款高度集成的单片CMOS芯片,专为满足10/100/1000BASE-T(即1000Mbps、100Mbps和10Mbps)标准的以太网通信需求而设计。该器件集成了数字自适应均衡器、模拟到数字转换器(ADC)、锁相环(PLL)、线路驱动器、编码器、解码器、回声消除器、噪声抑制电路以及所有必要的支持电路,确保在标准五类无屏蔽双绞线(UTP)上实现高效数据传输。
BCM5482S的特点包括:
1. **多功能性**:作为一个单一的芯片解决方案,它能够处理三种速率的以太网通信,支持1000BASE-T在五类UTP上的高速数据传输,同时兼容100BASE-TX和10BASE-T,后两者也可以在三类、四类和五类UTP上运行。
2. **串行接口**:该器件还配备了用于连接到串行MAC接口和光纤模块的串行接口,增加了灵活性和扩展性。
3. **先进的信号处理技术**:基于Broadcom成熟的数字信号处理器技术,BCM5482S遵循RGMII(Reduced Gigabit Media Independent Interface)规范,确保与业界标准的以太网MAC和交换控制器兼容。
4. **集成度高**:内置了多个SerDes( serializer/deserializer)引擎,这表明它具有高效的信号转换能力,能够处理复杂的信号传输任务。
5. **数字信号处理功能**:设备内部包含数字自适应均衡器,用于补偿电缆上的衰减和失真,以及噪声抑制技术,如回声消除器和交叉 talk cancellers,以优化信号质量。
6. **硬件兼容性**:由于其RGMII兼容性,BCM5482S可以无缝集成到多种基于标准以太网架构的系统中,降低开发复杂性和成本。
BCM5482S是一款功能强大、高度集成的以太网PHY,适用于对高速和低延迟数据传输有严格要求的应用,例如数据中心、企业网络和高性能路由器等。它的设计和性能特性使其成为构建现代通信基础设施的理想选择。
2/16/2009 1539I
BCM5482S Data Sheet
02/13/09
Broadcom Corporation
Page xvi Document 5482S-DS09-R
Transmit Mode ...............................................................................................................................76
Disable Partial Response Filter ......................................................................................................76
Edge-Rate Control (100BASE-TX).................................................................................................76
Shadow Register Select .................................................................................................................76
10BASE-T..............................................................................................................................................77
Manchester Code Error ..................................................................................................................77
EOF Error .......................................................................................................................................77
Polarity Error ..................................................................................................................................78
Block RX_DV Extension (IPG) .......................................................................................................78
10BASE-T TXC Invert Mode ..........................................................................................................78
Jabber Disable ...............................................................................................................................78
1000BASE-T Signal Detect Threshold ...........................................................................................78
10BASE-T Signal Detect Threshold ...............................................................................................78
10BASE-T Echo Mode ...................................................................................................................78
SQE Enable Mode..........................................................................................................................78
10BASE-T No Dribble .................................................................................................................... 78
Shadow Register Select .................................................................................................................78
1000BASE-T/100BASE-TX/10BASE-T Power/MII Control ...................................................................79
Low-Power Driver...........................................................................................................................79
Super Isolate (Copper Only)...........................................................................................................79
Shadow Register Select .................................................................................................................79
1000BASE-T/100BASE-TX/10BASE-T Misc Test Register ..................................................................80
Lineside [Remote] Loopback Enable..............................................................................................80
Lineside [Remote] Loopback Tristate.............................................................................................80
Swap RX MDIX ..............................................................................................................................80
10BASE-T Halfout ..........................................................................................................................80
Shadow Register Select .................................................................................................................81
1000BASE-T/100BASE-TX/10BASE-T Misc Control ............................................................................81
Write Enable (Bits 11:3) .................................................................................................................82
Shadow Register Read Selector ....................................................................................................82
Packet Counter Mode.....................................................................................................................82
Force Auto-MDIX Mode..................................................................................................................82
RGMII Timing Mode .......................................................................................................................82
RGMII RX_DV Mode ......................................................................................................................82
RGMII Out-of-Band Status (OOBS) Disable ..................................................................................82
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2/16/2009 1539I
Data Sheet BCM5482S
02/13/09
Broadcom Corporation
Document 5482S-DS09-R Page xvii
Ethernet@WireSpeed Enable........................................................................................................ 83
MDIO All PHY Select ..................................................................................................................... 83
Shadow Register Select ................................................................................................................ 83
1000BASE-T/100BASE-TX/10BASE-T Auxiliary Status Summary....................................................... 83
Auto-negotiation Complete ............................................................................................................ 84
Auto-negotiation Complete Acknowledge ...................................................................................... 84
Auto-negotiation Acknowledge Detect ........................................................................................... 84
Auto-negotiation Ability Detect....................................................................................................... 84
Auto-negotiation Next Page Wait................................................................................................... 85
Auto-negotiation HCD (Current Operating Speed and Duplex Mode) ........................................... 85
Parallel Detection Fault.................................................................................................................. 85
Remote Fault ................................................................................................................................. 85
Auto-negotiation Page Received ................................................................................................... 85
Link Partner Auto-negotiation Ability.............................................................................................. 85
Link Partner Next Page Ability ....................................................................................................... 85
Link Status ..................................................................................................................................... 85
Pause Resolution—Receive Direction and Transmit Direction...................................................... 85
1000BASE-T/100BASE-TX/10BASE-T Interrupt Status ....................................................................... 86
Signal Detect/Energy Detect Change ............................................................................................ 86
Illegal Pair Swap ............................................................................................................................ 87
MDIX Status Change ..................................................................................................................... 87
Exceeded High Counter Threshold................................................................................................ 87
Exceeded Low Counter Threshold ................................................................................................ 87
Auto-negotiation Page Received ................................................................................................... 87
No HCD Link .................................................................................................................................. 87
No HCD ......................................................................................................................................... 87
Negotiated Unsupported HCD ....................................................................................................... 87
Scrambler Synchronization Error................................................................................................... 87
Remote Receiver Status Change .................................................................................................. 87
Local Receiver Status Change ...................................................................................................... 88
Duplex Mode Change .................................................................................................................... 88
Link Speed Change ....................................................................................................................... 88
Link Status Change ....................................................................................................................... 88
CRC Error ...................................................................................................................................... 88
1000BASE-T/100BASE-TX/10BASE-T Interrupt Mask......................................................................... 89
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2/16/2009 1539I
BCM5482S Data Sheet
02/13/09
Broadcom Corporation
Page xviii Document 5482S-DS09-R
Interrupt Mask Vector ..................................................................................................................... 89
1000BASE-T/100BASE-TX/10BASE-T Register 1Ch Access...............................................................90
1000BASE-T/100BASE-TX/10BASE-T Spare Control 1 .......................................................................91
Write Enable...................................................................................................................................91
Shadow Register Selector..............................................................................................................91
Link LED Mode...............................................................................................................................91
1000BASE-T/100BASE-TX/10BASE-T Clock Alignment Control..........................................................92
Write Enable...................................................................................................................................92
Shadow Register Selector..............................................................................................................92
GTXCLK Clock Delay Enable.........................................................................................................92
1000BASE-T/100BASE-TX/10BASE-T Spare Control 2 .......................................................................93
Write Enable...................................................................................................................................93
Shadow Register Selector..............................................................................................................93
Ethernet@WireSpeed Retry Limit ..................................................................................................93
Energy Detect on INTR Pin ............................................................................................................93
1000BASE-T/100BASE-TX/10BASE-T Spare Control 3 .......................................................................94
Write Enable...................................................................................................................................94
Shadow Register Selector..............................................................................................................94
TXC/RXC Disable During Auto Power-Down .................................................................................94
TXC Disable ...................................................................................................................................94
Signal Detect/Energy Detect Enable ..............................................................................................94
CLK125 Auto Power-Down ............................................................................................................95
CLK125 Output...............................................................................................................................95
1000BASE-T/100BASE-TX/10BASE-T LED Status ..............................................................................95
Write Enable...................................................................................................................................95
Shadow Register Selector..............................................................................................................96
Slave Indicator................................................................................................................................96
FDX Indicator .................................................................................................................................96
INTR Indicator ................................................................................................................................96
LINKSPD Indicator .........................................................................................................................96
Transmit Indicator...........................................................................................................................96
Receive Indicator............................................................................................................................96
Quality Indicator .............................................................................................................................96
1000BASE-T/100BASE-TX/10BASE-T LED Control.............................................................................97
Write Enable...................................................................................................................................97
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2/16/2009 1539I
Data Sheet BCM5482S
02/13/09
Broadcom Corporation
Document 5482S-DS09-R Page xix
Shadow Register Selector ............................................................................................................. 97
Override Media Converter LED Mode............................................................................................ 97
Activity/Link LED Enable................................................................................................................ 97
ACTIVITY LED Enable .................................................................................................................. 98
Remote Fault LED Enable ............................................................................................................. 98
Link Utilization LED Selector ......................................................................................................... 98
1000BASE-T/100BASE-TX/10BASE-T Auto Power-Down................................................................... 98
Write Enable .................................................................................................................................. 98
Shadow Register Selector ............................................................................................................. 99
TXC/RXC Disable During Auto Power-Down................................................................................. 99
Auto Power-Down Mode ................................................................................................................ 99
Sleep Timer Select ........................................................................................................................ 99
Wake-up Timer Select ................................................................................................................... 99
1000BASE-T/100BASE-TX/10BASE-T LED Selector 1........................................................................ 99
External Control 2 ................................................................................................................................. 99
Write Enable ................................................................................................................................ 100
Shadow Register Selector ........................................................................................................... 101
LED3 (LINKSPD[2]) Selector ....................................................................................................... 101
LED1 (LINKSPD[1]) Selector ....................................................................................................... 101
1000BASE-T/100BASE-TX/10BASE-T LED Selector 2...................................................................... 102
Write Enable ................................................................................................................................ 103
Shadow Register Selector ........................................................................................................... 103
LED2 (INTR) Selector.................................................................................................................. 103
LED4 (Activity) Selector ............................................................................................................... 103
1000BASE-T/100BASE-TX/10BASE-T LED GPIO Control/Status..................................................... 103
Write Enable ................................................................................................................................ 104
Shadow Register Selector ........................................................................................................... 104
LED I/O Status ............................................................................................................................. 104
Programmable LED I/O Control ................................................................................................... 104
SerDes 100BASE-FX Status .............................................................................................................. 104
Write Enable ................................................................................................................................ 105
Shadow Register Selector ........................................................................................................... 105
Bad ESD Detected (Premature End) ........................................................................................... 105
False Carrier Detected................................................................................................................. 105
Transmit Error Detected .............................................................................................................. 105
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2/16/2009 1539I
BCM5482S Data Sheet
02/13/09
Broadcom Corporation
Page xx Document 5482S-DS09-R
Receive Error Detected ................................................................................................................105
Lock Timer Expired ......................................................................................................................105
Lost Lock ......................................................................................................................................105
Faulting.........................................................................................................................................105
Locked..........................................................................................................................................105
100FX Link (SerDes)....................................................................................................................105
SerDes 100BASE-FX Extend Register................................................................................................106
Write Enable.................................................................................................................................106
Shadow Register Selector............................................................................................................106
Far End Fault Enable ................................................................................................................... 106
100BASE-FX SerDes Full-Duplex................................................................................................107
100BASE-FX SerDes Enable.......................................................................................................107
Secondary SerDes Control..................................................................................................................107
Write Enable.................................................................................................................................108
Shadow Register Selector............................................................................................................108
Secondary SerDes Link Status Change.......................................................................................108
Secondary SerDes Link................................................................................................................108
Secondary SerDes Duplex ...........................................................................................................108
Secondary SerDes 100BASE-FX Full-Duplex..............................................................................108
Secondary SerDes 100BASE-FX Mode.......................................................................................108
Secondary SerDes LED Mode .....................................................................................................108
Select Sync Status .......................................................................................................................108
Select SD .....................................................................................................................................109
Secondary SerDes Select ............................................................................................................109
SGMII Slave ........................................................................................................................................109
Write Enable.................................................................................................................................109
Shadow Register Selector............................................................................................................110
SerDes Link.................................................................................................................................. 110
SerDes Duplex .............................................................................................................................110
SerDes Speed ..............................................................................................................................110
SerDes Link Status Change .........................................................................................................110
Mode Select .................................................................................................................................110
RGMII-to-SGMII Slave 10/100 TX FIFO Frequency Lock Mode ..................................................110
SGMII Slave Mode .......................................................................................................................110
SGMII Slave Auto-Detection ........................................................................................................110
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