Datasheet VSC7440 (Microchip) - 9

link to page 23 link to page 24 link to page 28 link to page 30 link to page 32 link to page 37 link to page 38 link to page 44 link to page 46 link to page 47 link to page 49 link to page 49 link to page 50 link to page 52 link to page 53 link to page 53 link to page 54 link to page 69 link to page 73 link to page 76 link to page 85 link to page 123 link to page 125 link to page 126 link to page 127 link to page 129 link to page 141 link to page 147 link to page 153 link to page 154 link to page 155 link to page 156 link to page 156 link to page 159 link to page 161 link to page 163 link to page 188 link to page 196 link to page 198 link to page 203 link to page 204 link to page 206 link to page 207 link to page 209 link to page 216 link to page 216 link to page 218 link to page 219 link to page 220 link to page 221 link to page 223 link to page 225 link to page 226 link to page 230
Figures
Figure 1 RTL Block Diagram . 6 Figure 2 Block Diagram . 7 Figure 3 Default Scheduler-Shaper Configuration . 11 Figure 4 Frame with Internal Frame Header . 13 Figure 5 Internal Frame Header . 15 Figure 6 Frame With VStaX Header . 20 Figure 7 VStaX Header Layout . 21 Figure 8 10G Muxing . 27 Figure 9 Register Space Layout . 29 Figure 10 Cat5 Media Interface . 30 Figure 11 Low Power Idle Operation . 32 Figure 12 Wake-On-LAN Functionality . 32 Figure 13 Inline Powered Ethernet Switch . 33 Figure 14 ActiPHY State Diagram . 35 Figure 15 Far-End Loopback Diagram . 36 Figure 16 Near-End Loopback Diagram . 36 Figure 17 Connector Loopback Diagram . 37 Figure 18 Frame Injection Formats . 52 Figure 19 VCAP Cache Layout Example . 56 Figure 20 VCAP Cache Type-Group Example . 59 Figure 21 Processing Flow . 68 Figure 22 VLAN Acceptance Filter . 106 Figure 23 Basic QoS Classification Flow Chart . 108 Figure 24 Basic DP Classification Flow Chart . 109 Figure 25 Basic DSCP Classification Flow Chart . 110 Figure 26 Basic VLAN Classification Flow Chart . 112 Figure 27 Example of QoS Mappings . 124 Figure 28 VLAN Table Update Engine (TUPE) . 130 Figure 29 Router Model . 136 Figure 30 Unicast Routing Table Overview . 137 Figure 31 Multicast Routing Table Overview . 138 Figure 32 Ingress Router Leg Lookup Flow . 139 Figure 33 Ingress Router Leg MAC Address Matching for Unicast Packets . 139 Figure 34 IP Unicast Routing Example . 142 Figure 35 ARP Pointer Remapping . 144 Figure 36 IP Multicast Routing Example . 146 Figure 37 MAC Table Organization . 171 Figure 38 DMAC Lookup . 179 Figure 39 Source Check . 181 Figure 40 PGID Layout . 186 Figure 41 PGID Lookup Decision Forwarding . 187 Figure 42 GLAG Port of Exit Calculation . 189 Figure 43 Port Mask Operation . 190 Figure 44 Policer Hierarchy . 192 Figure 45 Sticky Events Available as Global Events . 199 Figure 46 Port Statistics Counters . 199 Figure 47 Queue Statistics . 201 Figure 48 BUM Policer Statistics . 202 Figure 49 ACL Policer Statistics . 203 Figure 50 Ingress and Egress Routing Statistics per Router Leg per IP Version . 204 Figure 51 sFlow Stamp Format in FCS . 206 Figure 52 Ingress Mirroring in Specific VLAN . 208 Figure 53 Shared Queue System Block Diagram . 209 Figure 54 Translation of Transmit Requests . 213 VMDS-10492 VSC7440 Datasheet Revision 4.2 vii Document Outline 1 Revision History 1.1 Revision 4.2 1.2 Revision 4.1 1.3 Revision 4.0 2 Product Overview 2.1 General Features 2.1.1 Layer 2 and Layer 3 Forwarding 2.1.2 Timing and Synchronization 2.1.3 Quality of Service 2.1.4 Security 2.1.5 Management 2.1.6 Product Parameters 2.2 Applications 3 Functional Descriptions 3.1 Register Notations 3.2 Functional Overview 3.2.1 Frame Arrival in Ports and Port Modules 3.2.2 Basic Classification 3.2.3 Security and Control Protocol Classification 3.2.4 Policing 3.2.5 Layer 2 Forwarding 3.2.6 Layer 3 Forwarding 3.2.7 Shared Queue System and Hierarchical Scheduler 3.2.8 Rewriter and Frame Departure 3.2.9 CPU Port Module 3.2.10 Synchronous Ethernet and Precision Time Protocol (PTP) 3.2.11 CPU Subsystem 3.3 Frame Headers 3.3.1 Internal Frame Header Placement 3.3.2 Internal Frame Header Layout 3.3.3 VStaX Header 3.4 Port Numbering and Mappings 3.4.1 Supported SerDes Interfaces 3.4.2 Dual-Media Mode 3.4.3 10G Modes 3.4.4 Logical Port Numbers 3.5 SERDES1G 3.6 SERDES6G 3.7 SERDES10G 3.8 Copper Transceivers 3.8.1 Register Access 3.8.2 Cat5 Twisted Pair Media Interface 3.8.3 Wake-On-LAN and SecureOn 3.8.4 Ethernet Inline Powered Devices 3.8.5 IEEE 802.3af PoE Support 3.8.6 ActiPHY™ Power Management 3.8.7 Testing Features 3.8.8 VeriPHY™ Cable Diagnostics 3.9 DEV1G and DEV2G5 Port Modules 3.9.1 MAC 3.9.2 Half-Duplex Mode 3.9.3 Physical Coding Sublayer (PCS) 3.9.4 Port Statistics 3.10 DEV10G Port Module 3.10.1 MAC 3.10.2 Physical Coding Sublayer (PCS) 3.10.3 Port Statistics 3.11 Assembler 3.11.1 Setting Up a Port in the Assembler 3.11.2 Setting Up a Port for Frame Injection 3.11.3 Setting Up MAC Control Sublayer PAUSE Frame Detection 3.11.4 Setting Up PFC 3.11.5 Setting Up Assembler Port Statistics 3.11.6 Setting Up the Loopback Path 3.12 Versatile Content-Aware Processor (VCAP) 3.12.1 Configuring VCAP 3.12.2 Wide VCAP Entries and Actions 3.12.3 Individual VCAPs 3.12.4 VCAP Programming Examples 3.13 Pipeline Points 3.13.1 Pipeline Definitions 3.14 Analyzer 3.14.1 Initializing the Analyzer 3.15 VCAP CLM Keys and Actions 3.15.1 Keys Overview 3.15.2 VCAP CLM X1 Key Details 3.15.3 VCAP CLM X2 Key Details 3.15.4 VCAP CLM X4 Key Details 3.15.5 VCAP CLM X8 Key Details 3.15.6 VCAP CLM X16 Key Details 3.15.7 VCAP CLM Actions 3.16 Analyzer Classifier 3.16.1 Basic Classifier 3.16.2 VCAP CLM Processing 3.16.3 QoS Mapping Table 3.16.4 Analyzer Classifier Diagnostics 3.17 VLAN and MSTP 3.17.1 Private VLAN 3.17.2 VLAN Pseudo Code 3.18 VCAP LPM: Keys and Action 3.18.1 VCAP LPM SGL_IP4 Key Details 3.18.2 VCAP LPM DBL_IP4 Key Details 3.18.3 VCAP LPM SGL_IP6 Key Details 3.18.4 VCAP LPM DBL_IP6 Key Details 3.18.5 VCAP LPM Actions 3.19 IP Processing 3.19.1 IP Source/Destination Guard 3.19.2 IP Routing 3.19.3 Statistics 3.19.4 IGMP/MLD Snooping Switch 3.20 VCAP IS2 Keys and Actions 3.20.1 VCAP IS2 Keys 3.20.2 VCAP IS2 Actions 3.21 Analyzer Access Control Lists 3.21.1 VCAP IS2 3.21.2 Analyzer Access Control List Frame Rewriting 3.22 Analyzer Layer 2 Forwarding and Learning 3.22.1 Analyzer MAC Table 3.22.2 MAC Table Updates 3.22.3 CPU Access to MAC Table 3.22.4 SCAN Command 3.22.5 Forwarding Lookups 3.22.6 Source Check and Automated Learning 3.22.7 Automated Aging (AUTOAGE) 3.22.8 Interrupt Handling 3.23 Analyzer Access Control Forwarding, Policing, and Statistics 3.23.1 Mask Handling 3.23.2 Policing 3.23.3 Analyzer Statistics 3.23.4 Analyzer sFlow Sampling 3.23.5 Mirroring 3.24 Shared Queue System and Hierarchical Scheduler 3.24.1 Analyzer Result 3.24.2 Buffer Control 3.24.3 Forwarding 3.24.4 Congestion Control 3.24.5 Queue Mapping 3.24.6 Queue Congestion Control 3.24.7 Scheduling 3.24.8 Queue System Initialization 3.24.9 Miscellaneous Features 3.25 Automatic Frame Injector 3.25.1 Injection Tables 3.25.2 Frame Table 3.25.3 Delay Triggered Injection 3.25.4 Timer Triggered Injection 3.25.5 Injection Queues 3.25.6 Adding Injection Frame 3.25.7 Starting Injection 3.25.8 Stopping Injection 3.25.9 Removing Injection Frames 3.25.10 Port Parameters 3.26 Rewriter 3.26.1 Rewriter Operation 3.26.2 Supported Ports 3.26.3 Supported Frame Formats 3.26.4 Rewriter Initialization 3.26.5 VCAP_ES0 Lookup 3.26.6 Mapping Tables 3.26.7 VLAN Editing 3.26.8 DSCP Remarking 3.26.9 VStaX Header Insertion 3.26.10 Forwarding to GCPU 3.26.11 Layer 3 Routing 3.26.12 Mirror Frames 3.26.13 Internal Frame Header Insertion 3.26.14 Frame Injection from Internal CPU 3.27 Disassembler 3.27.1 Setting Up Ports 3.27.2 Maintaining the Cell Buffer 3.27.3 Setting Up MAC Control Sublayer PAUSE Function 3.27.4 Setting up Flow Control in Half-Duplex Mode 3.27.5 Setting Up Frame Aging 3.27.6 Setting Up Transmit Data Rate Limiting 3.27.7 Error Detection 3.28 Layer 1 Timing 3.29 Hardware Time Stamping 3.29.1 One-Step Functions 3.29.2 Calculation Overview 3.29.3 Detecting Calculation Issues 3.29.4 Two-Step Functions 3.29.5 Time of Day Time Stamping 3.29.6 Time of Day Generation 3.29.7 Multiple PTP Time Domains 3.29.8 Register Interface to 1588 Functions 3.29.9 Configuring I/O Delays 3.30 VRAP Engine 3.30.1 VRAP Request Frame Format 3.30.2 VRAP Response Frame Format 3.30.3 VRAP Header Format 3.30.4 VRAP READ Command 3.30.5 VRAP READ-MODIFY-WRITE Command 3.30.6 VRAP IDLE Command 3.30.7 VRAP PAUSE Command 3.31 Energy Efficient Ethernet 3.32 CPU Injection and Extraction 3.32.1 Frame Injection 3.32.2 Frame Extraction 3.32.3 Forwarding to CPU 3.32.4 Automatic Frame Injection (AFI) 3.33 Priority-Based Flow Control (PFC) 3.33.1 PFC Pause Frame Generation 3.33.2 PFC Frame Reception 3.34 Protection Switching 3.34.1 Ethernet Ring Protection Switching 3.34.2 Link Aggregation 3.34.3 Port Protection Switching 3.35 Low Power Mode 3.35.1 One-Time Configurations for Low Power Mode 3.35.2 General Considerations in Low Power Mode 3.36 Clocking and Reset 3.36.1 Pin Strapping 4 VCore-III System and CPU Interfaces 4.1 VCore-III Configurations 4.2 Clocking and Reset 4.2.1 Watchdog Timer 4.3 Shared Bus 4.3.1 VCore-III Shared Bus Arbitration 4.3.2 Chip Register Region 4.3.3 SI Flash Region 4.3.4 DDR3/DDR3L Region 4.3.5 PCIe Region 4.4 VCore-III CPU 4.4.1 Little Endian and Big Endian Support 4.4.2 Software Debug and Development 4.5 External CPU Support 4.5.1 Register Access and Multimaster Systems 4.5.2 Serial Interface in Slave Mode 4.5.3 MIIM Interface in Slave Mode 4.5.4 Access to the VCore Shared Bus 4.5.5 Mailbox and Semaphores 4.6 PCIe Endpoint Controller 4.6.1 Accessing Endpoint Registers 4.6.2 Enabling the Endpoint 4.6.3 Base Address Registers Inbound Requests 4.6.4 Outbound Interrupts 4.6.5 Outbound Access 4.6.6 Power Management 4.6.7 Device Reset Using PCIe 4.7 Frame DMA 4.7.1 DMA Control Block Structures 4.7.2 Enabling and Disabling FDMA Channels 4.7.3 Channel Counters 4.7.4 FDMA Events and Interrupts 4.7.5 FDMA Extraction 4.7.6 FDMA Injection 4.7.7 Manual Mode 4.8 VCore-III System Peripherals 4.8.1 SI Boot Controller 4.8.2 SI Master Controller 4.8.3 DDR3/DDR3L Memory Controller 4.8.4 Timers 4.8.5 UARTs 4.8.6 Two-Wire Serial Interface 4.8.7 MII Management Controller 4.8.8 GPIO Controller 4.8.9 Serial GPIO Controller 4.8.10 Fan Controller 4.8.11 Temperature Sensor 4.8.12 Memory Integrity Monitor 4.8.13 Interrupt Controller 5 Registers 6 Electrical Specifications 6.1 DC Characteristics 6.1.1 Reference Clock 6.1.2 PLL Clock Output 6.1.3 DDR3/DDR3L SDRAM Interface 6.1.4 SERDES1G 6.1.5 SERDES6G 6.1.6 SERDES10G 6.1.7 GPIO, SI, JTAG, and Miscellaneous Signals 6.1.8 Thermal Diode 6.2 AC Characteristics 6.2.1 Reference Clock 6.2.2 PLL Clock Outputs 6.2.3 SERDES1G 6.2.4 SERDES6G 6.2.5 SERDES10G 6.2.6 Reset Timing 6.2.7 MII Management 6.2.8 Serial Interface (SI) Boot Master Mode 6.2.9 Serial Interface (SI) Master Mode 6.2.10 Serial Interface (SI) for Slave Mode 6.2.11 DDR SDRAM Interface 6.2.12 JTAG Interface 6.2.13 Serial Inputs/Outputs 6.2.14 Recovered Clock Outputs 6.2.15 Two-Wire Serial Interface 6.2.16 IEEE 1588 Time Tick Outputs 6.3 Current and Power Consumption 6.3.1 Current Consumption 6.3.2 Power Consumption 6.3.3 Power Supply Sequencing 6.4 Operating Conditions 6.5 Stress Ratings 7 Pin Descriptions 7.1 Pin Diagram 7.2 Pins by Function 7.2.1 DDR SDRAM Interface 7.2.2 General-Purpose Inputs and Outputs 7.2.3 JTAG Interface 7.2.4 MII Management Interface 7.2.5 Miscellaneous 7.2.6 PCI Express Interface 7.2.7 Power Supplies and Ground 7.2.8 SERDES1G 7.2.9 SERDES6G 7.2.10 SERDES10G 7.2.11 Serial CPU Interface 7.2.12 System Clock Interface 7.2.13 Twisted Pair Interface 7.3 Pins by Number 7.4 Pins by Name 8 Package Information 8.1 Package Drawing 8.2 Thermal Specifications 8.3 Moisture Sensitivity 9 Design Guidelines 9.1 Power Supplies 9.2 Power Supply Decoupling 9.2.1 Reference Clock 9.2.2 Single-Ended REFCLK Input 9.3 Interfaces 9.3.1 General Recommendations 9.3.2 SerDes Interfaces (SGMII, 2.5G, 10G) 9.3.3 Serial Interface 9.3.4 PCI Express Interface 9.3.5 Two-Wire Serial Interface 9.3.6 DDR3 SDRAM Interface 9.3.7 Thermal Diode External Connection 10 Design Considerations 11 Ordering Information