Datasheet KSZ9897S (Microchip)

KSZ9897S 7-Port Gigabit Ethernet Switch with SGMII and RGMII/MII/RMII Interfaces Highlights
• One External MAC Port with SGMII • One External MAC Port with RGMII/MII/RMII • One port with 10/100/1000 Ethernet MAC - RGMII v2.0, RMII v1.2 with 50MHz reference clock and SGMII interface input/output option, MII in PHY/MAC mode • One port with 10/100/1000 Ethernet MAC • Five Integrated PHY Ports and configurable RGMII/MII/RMII interface - 1000BASE-T/100BASE-TX/10BASE-Te IEEE 802.3 • IEEE 802.1X access control support - Fast Link-up option significantly reduces link-up time • Five ports with integrated 10/100/1000BASE-T PHY - Auto-negotiation and Auto-MDI/MDI-X support transceivers - On-chip termination resistors and internal biasing for • Non-blocking wire-speed Ethernet switching fabric differential pairs to reduce power • Full-featured forwarding and filtering control, includ- - LinkMD® cable diagnostic capabilities for determining ing Access Control List (ACL) filtering cable opens, shorts, and length • Full VLAN and QoS support • Advanced Switch Capabilities • EtherGreen™ power management features, - IEEE 802.1Q VLAN support for 128 active VLAN including low power standby groups and the full range of 4096 VLAN IDs • Flexible management interface options: SPI, I2C, - IEEE 802.1p/Q tag insertion/removal on per port basis MIIM, and in-band management via any port - VLAN ID on per port or VLAN basis - IEEE 802.3x full-duplex flow control and half-duplex • Commercial/Industrial temperature range support back pressure collision control • 128-pin TQFP-EP (14 x 14mm) RoHS compliant pkg - IEEE 802.1X access control (Port-based and MAC address based)
Target Applications
- IGMP v1/v2/v3 snooping for multicast packet filtering - IPv6 multicast listener discovery (MLD) snooping • Stand-alone 10/100/1000Mbps Ethernet switches - IPv4/IPv6 QoS support, QoS/CoS packet prioritization • VoIP infrastructure switches - 802.1p QoS packet classification with 4 priority queues • Broadband gateways/firewalls - Programmable rate limiting at ingress/egress ports • Wi-Fi access points - Broadcast storm protection • Integrated DSL/cable modems - Four priority queues with dynamic packet mapping for • Security/surveillance systems IEEE 802.1p, IPv4 DIFFSERV, IPv6 Traffic Class • Industrial control/automation switches - MAC filtering function to filter or forward unknown uni- • Networked measurement and control systems cast, multicast and VLAN packets - Self-address filtering for implementing ring topologies
Features
• Comprehensive Configuration Registers Access - High-speed 4-wire SPI (up to 50MHz), I2C interfaces • Switch Management Capabilities provide access to all internal registers - 10/100/1000Mbps Ethernet switch basic functions: - MII Management (MIIM, MDC/MDIO 2-wire) Interface frame buffer management, address look-up table, provides access to all PHY registers queue management, MIB counters - In-band management via any of the data ports - Non-blocking store-and-forward switch fabric assures - I/O pin strapping facility to set certain register bits from fast packet delivery by utilizing 4096 entry forwarding I/O pins at reset time table with 256kByte frame buffer - On-the-fly configurable control registers - Jumbo packet support up to 9000 bytes • Power Management - Port mirroring/monitoring/sniffing: - Energy detect power-down mode on cable disconnect ingress and/or egress traffic to any port - Dynamic clock tree control - MIB counters for fully-compliant statistics gathering - Unused ports can be individually powered down 34 counters per port - Full-chip software power-down - Tail tagging mode (one byte added before FCS) sup- - Wake-on-LAN (WoL) standby power mode with PME port at host port to inform the processor which ingress interrupt output for system wake upon triggered events port receives the packet and its priority - Loopback modes for remote failure diagnostics - Rapid spanning tree protocol (RSTP) support for topol- ogy management and ring/linear recovery - Multiple spanning tree protocol (MSTP) support  2017-2019 Microchip Technology Inc. DS00002394C-page 1 Document Outline 1.0 Preface 1.1 Glossary of Terms TABLE 1-1: General Terms 1.2 Buffer Types TABLE 1-2: Buffer Types 1.3 Register Nomenclature TABLE 1-3: Register Nomenclature 1.4 References 2.0 Introduction 2.1 General Description FIGURE 2-1: Internal Block Diagram 3.0 Pin Descriptions and Configuration 3.1 Pin Assignments FIGURE 3-1: Pin Assignments (Top View) TABLE 3-1: Pin Assignments 3.2 Pin Descriptions TABLE 3-2: Pin Descriptions 3.2.1 Configuration Straps TABLE 3-3: Configuration Strap Descriptions 4.0 Functional Description 4.1 Physical Layer Transceiver (PHY) 4.1.1 1000BASE-T Transceiver 4.1.2 100BASE-TX Transceiver 4.1.3 10BASE-Te Transceiver 4.1.4 Auto MDI/MDI-X TABLE 4-1: MDI/MDI-X Pin Definitions 4.1.5 Pair-Swap, Alignment, and Polarity Check 4.1.6 Wave Shaping, Slew-Rate Control, and Partial Response 4.1.7 Auto-Negotiation FIGURE 4-1: Auto-Negotiation and Parallel Operation 4.1.8 Fast Link-Up 4.1.9 LinkMD® Cable Diagnostics 4.1.10 Remote PHY Loopback FIGURE 4-2: Remote PHY Loopback 4.2 LEDs 4.2.1 Single-LED Mode TABLE 4-2: Single-LED Mode Pin Definition 4.2.2 Tri-Color Dual-LED Mode TABLE 4-3: Tri-Color Dual-LED Mode Pin Definition 4.3 Media Access Controller (MAC) 4.3.1 MAC Operation 4.3.2 Inter-Packet Gap (IPG) 4.3.3 Back-Off Algorithm 4.3.4 Late Collision 4.3.5 Legal Packet Size 4.3.6 Flow Control 4.3.7 Half-Duplex Back Pressure 4.3.8 Flow Control and Back Pressure Registers TABLE 4-4: Flow Control and back Pressure Registers 4.3.9 Broadcast Storm Protection 4.3.10 Self-Address Filtering 4.4 Switch 4.4.1 Switching Engine 4.4.2 Address Lookup TABLE 4-5: Address Lookup Table Hashing Options TABLE 4-6: Reserved Multicast Address Table FIGURE 4-3: Packet Forwarding Process Flowchart TABLE 4-7: Lookup Engine Registers 4.4.3 IEEE 802.1Q VLAN TABLE 4-8: VLAN Forwarding TABLE 4-9: Hashed(DA) + FID Lookup in VLAN Mode TABLE 4-10: Hashed(SA) + FID Lookup in VLAN Mode TABLE 4-11: VLAN Registers 4.4.4 Quality-of-Service (QoS) Priority Support FIGURE 4-4: 802.p Priority Field Format 4.4.5 Traffic Conditioning & Policing 4.4.6 Spanning Tree Support TABLE 4-12: Spanning Tree States 4.4.7 Rapid Spanning Tree Support 4.4.8 Multiple Spanning Tree Support 4.4.9 Tail Tagging Mode FIGURE 4-5: Tail Tag Frame Format TABLE 4-13: Receive Tail Tag Format (from Switch to Host) TABLE 4-14: Transmit Tail Tag Format (from Host to Switch) 4.4.10 IGMP Support 4.4.11 IPv6 MLD Snooping 4.4.12 Port Mirroring 4.4.13 Scheduling and Rate Limiting 4.4.14 Ingress MAC Address Filtering Function 4.4.15 802.1X Access Control 4.4.16 Access Control List (ACL) Filtering TABLE 4-15: ACL Processing Entry Parameters FIGURE 4-6: ACL Structure and Example Rule Values TABLE 4-16: Matching Rule Options TABLE 4-17: ACL Matching Rule Parameters for MD = 01 TABLE 4-18: ACL Matching Rule Parameters for MD = 10 TABLE 4-19: ACL Matching Rule Parameters for MD = 11 TABLE 4-20: ACL Action Rule Parameters for Non-count Modes (MD ≠ 01 or ENB ≠ 00) TABLE 4-21: ACL Action Rule Parameters for count Mode (MD = 01 or ENB = 00) FIGURE 4-7: ACL Table Format TABLE 4-22: ACL Registers 4.5 NAND Tree Support TABLE 4-23: NAND Tree Test Pin Order 4.6 Clocking 4.6.1 Primary Clock 4.6.2 Port 6 RGMII/MII/RMII Clocks 4.6.3 Port 7 SGMII Clock 4.6.4 Serial Management Interface Clock 4.6.5 CLKO_25_125 4.7 Power FIGURE 4-8: Power Connection Diagram 4.8 Power Management TABLE 4-24: MDI/MDI-X Pin Definitions 4.8.1 Normal Operation Mode 4.8.2 Energy-Detect Mode 4.8.3 Global Soft Power-Down Mode 4.8.4 Port-Based Power Down 4.8.5 Wake on LAN (WoL) 4.9 Management Interface 4.9.1 SPI Slave Bus TABLE 4-25: Register Access using the SPI Interface FIGURE 4-9: SPI Register Read Operation FIGURE 4-10: SPI Register Write Operation 4.9.2 I2C Bus FIGURE 4-11: Single Byte Register Write FIGURE 4-12: Single Byte Register Read FIGURE 4-13: Burst Register Write FIGURE 4-14: Burst Register Read 4.9.3 MII Management (MIIM) Interface TABLE 4-26: MII Management Interface Frame Format TABLE 4-27: Standard MIIM Registers 4.10 In-Band Management FIGURE 4-15: In-Band Management Frame Format 4.11 MAC Interface (Ports 6 and 7) 4.11.1 Media Independent Interface (MII) (Port 6) TABLE 4-28: MII (PHY Mode) Connection to External MAC TABLE 4-29: MII (MAC Mode) Connection to External PHY 4.11.2 Reduced Media Independent Interface (RMII) (Port 6) TABLE 4-30: RMII Signal Descriptions TABLE 4-31: RMII Connection to External MAC TABLE 4-32: RMII Connection to External PHY 4.11.3 Reduced Gigabit Media Independent Interface (RGMII) (Port 6) TABLE 4-33: RGMII Signal Descriptions 4.11.4 Serial Gigabit Media Independent Interface (SGMII) (Port 7) 5.0 Device Registers FIGURE 5-1: Register Address Mapping FIGURE 5-2: Byte Ordering TABLE 5-1: Global Register Address Map TABLE 5-2: Port N (1-7) Register Address Map 5.1 Global Registers 5.1.1 Global Operation Control Registers (0x0000 - 0x00FF) 5.1.2 Global I/O Control Registers (0x0100 - 0x01FF) 5.1.3 Global PHY Control and Status Registers (0x0200 - 0x02FF) 5.1.4 Global Switch Control Registers (0x0300 - 0x03FF) 5.1.5 Global Switch Look Up Engine (LUE) Control Registers (0x0400 - 0x04FF) 5.2 Port Registers 5.2.1 Port N: Port Operation Control Registers (0xN000 - 0xN0FF) 5.2.2 Port N: Port Ethernet PHY Registers (0xN100 - 0xN1FF) 5.2.3 Port N: Port SGMII Control Registers (0xN200 - 0xN2FF) 5.2.4 Port N: Port RGMII/MII/RMII Control Registers (0xN300 - 0xN3FF) 5.2.5 Port N: Port Switch MAC Control Registers (0xN400 - 0xN4FF) TABLE 5-3: Data Rate Selection Table for Ingress and Egress Rate Limiting 5.2.6 Port N: Port Switch MIB Counters Registers (0xN500 - 0xN5FF) 5.2.7 Port N: Port Switch ACL Control Registers (0xN600 - 0xN6FF) 5.2.8 Port N: Port Switch Ingress Control Registers (0xN800 - 0xN8FF) 5.2.9 Port N: Port Switch Egress Control Registers (0xN900 - 0xN9FF) 5.2.10 Port N: Port Switch Queue Management Control Registers (0xNA00 - 0xNAFF) 5.2.11 Port N: Port Switch Address Lookup Control Registers (0xNB00 - 0xNBFF) 5.3 Tables and MIB Counters (Access) 5.3.1 Address Lookup (ALU) Table FIGURE 5-3: Address Lookup Table Configuration 5.3.2 Static Address Table 5.3.3 Reserved Multicast Address Table 5.3.4 VLAN Table FIGURE 5-4: VLAN Table Structure TABLE 5-4: VLAN Table Data Fields 5.3.5 Access Control List (ACL) Table TABLE 5-5: ACL Field Register Mapping 5.3.6 Management Information Base (MIB) Counters TABLE 5-6: MIB Counters 5.4 MDIO Manageable Device (MMD) Registers (Indirect) TABLE 5-7: MMD Register Map 5.4.1 MMD LED Mode Register 5.4.2 MMD EEE Advertisement Register 5.5 SGMII Registers (Indirect) TABLE 5-8: SGMII Register Map (Indirect) 5.5.1 SGMII Control Register 5.5.2 SGMII Status Register 5.5.3 SGMII PHY ID 1 Register 5.5.4 SGMII PHY ID 2 Register 5.5.5 SGMII Auto-Negotiation Advertisement Register 5.5.6 SGMII Auto-Negotiation Link Partner Base Ability Register 5.5.7 SGMII Auto-Negotiation Expansion Register 5.5.8 SGMII Digital Control Register 5.5.9 SGMII Auto-Negotiation Control Register 5.5.10 SGMII Auto-Negotiation Status Register 6.0 Operational Characteristics 6.1 Absolute Maximum Ratings* 6.2 Operating Conditions** 6.3 Electrical Characteristics TABLE 6-1: Electrical Characteristics 6.4 Timing Specifications 6.4.1 RGMII Timing FIGURE 6-1: RGMII Timing TABLE 6-2: RGMII Timing Values 6.4.2 MII Timing FIGURE 6-2: MII Transmit Timing in MAC Mode TABLE 6-3: MII Transmit Timing in MAC Mode Values FIGURE 6-3: MII Receive Timing in MAC Mode TABLE 6-4: MII Receive Timing in MAC Mode Values FIGURE 6-4: MII Receive Timing in PHY Mode TABLE 6-5: MII Receive Timing in PHY Mode Values FIGURE 6-5: MII Transmit Timing in PHY Mode TABLE 6-6: MII Transmit Timing in PHY Mode Values 6.4.3 RMII Timing FIGURE 6-6: RMII Transmit Timing FIGURE 6-7: RMII Receive Timing TABLE 6-7: RMII Timing Values 6.4.4 MIIM Timing FIGURE 6-8: MIIM Timing TABLE 6-8: MIIM Timing Values 6.4.5 SPI Timing FIGURE 6-9: SPI Data Input Timing FIGURE 6-10: SPI Data Output Timing TABLE 6-9: SPI Timing Values 6.4.6 Auto-Negotiation Timing FIGURE 6-11: Auto-Negotiation Timing TABLE 6-10: Auto-Negotiation Timing Values 6.4.7 Power-up and Reset Timing FIGURE 6-12: Power-up and Reset Timing TABLE 6-11: Power-up and Reset Timing Values 6.5 Clock Specifications FIGURE 6-13: Input Reference Clock Connection Options TABLE 6-12: Reference Crystal Characteristics 7.0 Design Guidelines 7.1 Reset Circuit Guidelines FIGURE 7-1: Simple Reset Circuit FIGURE 7-2: Reset Circuit for CPU Reset Interface 7.2 Magnetics Connection and Selection Guidelines FIGURE 7-3: Typical Magnetic Interface Circuit TABLE 7-1: Magnetics Selection Criteria TABLE 7-2: Compatible Single-Port 10/100/1000 Magnetics 8.0 Package Information 8.1 Package Marking Information 8.2 Package Drawings FIGURE 8-1: Package (Drawing) FIGURE 8-2: Package (Dimensions) FIGURE 8-3: Package (Land Pattern) Appendix A: Data Sheet Revision History The Microchip Web Site Customer Change Notification Service Customer Support Product Identification System Worldwide Sales and Service