KSZ8895数据手册集成电路（IC）的控制器规格书PDF

描述 Description

The KSZ8895MQX/RQX/FQX/ML is a highly-integrated, Layer 2 managed, five-port switch with numerous features designed to reduce system cost. The KSZ8895 is Automotive qualified (AEC-Q100). 

The KSZ8895 family was designed to be used in for cost sensitive 10/100Mbps five-port switch systems with low power requirements. Combining on-chip termination and internal LDO regulator help minimize system cost.  The KSZ8895 family supports high-performance memory bandwidth and shared memory-based switch fabric with non-blocking configuration. 

The KSZ8895  family also includes an extensive feature set, including: power management, programmable rate limit and priority ratio, tag/port-based VLAN, packets filtering, four queue QoS prioritization, management interfaces, and MIB counters.

The KSZ8895 family provides multiple CPU data interfaces to effectively address both current and emerging fast Ethernet applications when port 5 is configured to separate MAC5 with SW5-MII/RMII and PHY5 with P5-MII/RMII interfaces.The KSZ8895 family offers three configurations, providing the flexibility to meet different requirements:

KSZ8895MQX/ML has 5 10/100Base-T/TX transceivers, 1 SW5-MII and 1 P5-MII interfaceKSZ8895RQX has 5 10/100Base-T/TX transceivers, 1 SW5-RMII and 1 P5-RMII interfaceKSZ8895FQX has 4 10/100Base-T/TX transceivers on Ports 1, 2, 3 and 5 (port 3 can be set to the fiber mode). 1 100Base-FX transceivers on Port 4. 1 SW5-MII and 1 P5-MII interface All registers of MACs and PHYs units can be managed by the SPI or the SMI interface. MIIM registers can be accessed through the MDC/MDIO interface. 

EEPROM can set all control registers for the unmanaged mode.KSZ8895MQX/RQX/FQX are 128-pin PQFP package. KSZ8895ML is 128-pin LQFP package.Microchip's complimentary and confidential LANCheck® online design review service is available for customers who have selected our products for their application design-in. The LANCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

**Please note: KSZ8895 part numbers ending/containing \"A\" are not recommended for new designs**i.e. For new designs, instead of using KSZ8895MQXIA, please use KSZ8895MQXI.

 

特性 Features

Advanced Switch Features
• IEEE 802.1q VLAN support for up to 128 active VLAN groups (full-range 4096 of VLAN IDs)
• Static MAC table supports up to 32 entries
• VLAN ID tag/untag options, per port basis
Comprehensive Configuration Register Access
• Serial management interface (MDC/MDIO) to all PHYs registers and SMI interface (MDC/MDIO) to all registers
• High-speed SPI (up to 25MHz) and I2C master Interface to all internal registers
• I/0 pins strapping and EEPROM to program selective registers in unmanaged switch mode
QoS/CoS Packet Prioritization Support
• Per port, 802.1p and DiffServ-based
• 1/2/4-queue QoS prioritization selection
• Programmable weighted fair queuing for ratio control
Integrated 5-Port 10/100 Ethernet Switch
• New generation switch with five MACs and five PHYs that are fully compliant with the IEEE 802.3u standard
• PHYs designed with patented enhanced mixed-signal technology
• Non-blocking switch fabric assures fast packet delivery by utilizing a 1K MAC address lookup table and a store-and-forward architecture
Switch Monitoring Features
• Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port or MII/RMII
• MIB counters for fully-compliant statistics gathering 34 MIB counters per port
• Loop-back support for MAC, PHY, and remote diagnostic of failure
Low-Power Dissipation
• Full-chip software power-down and per port software power down
• Energy-detect mode support

简介

KSZ8895属于集成电路（IC）的控制器。由制造生产的KSZ8895控制器该系列产品主要用于在采用不同通信协议和/或信令方法的端点之间提供信息连接。示例包括将 I2C 总线连接到 UART，将 USB 连接到 I2C、SPI、以太网或 UART、以太网 MAC 和 PHY 等的器件。此外，还包括用于通过为点对点通信设计的接口建立多路连接的器件，例如 USB 集线器控制器。