技术资料
- 新闻｜马斯克访华推特斯拉自动驾驶技术 逢展会突访中国国务院总 ...
- 新闻｜追逐DRAM浪潮，SK海力士再建一座DRAM工厂
- 新闻｜三星电子获6.4亿美元美国政府补助加速半导体扩张
- 新闻｜英特尔推出Gaudi 3人工智能芯片，挑战英伟达的领导 ...
- 新闻｜LG Innotek利用先进激光雷达技术进军传感器市场 ...
- 新闻｜日本支持Rapidus发展下一代AI芯片后工序技术
- 新闻｜1000亿美元，微软与OpenAI的“AI超级霸权”野 ...
- 新闻｜英伟达卷疯了：最强AI芯片GB200来了！
- 新闻｜2023年第四季度PC处理器市场：英特尔稳坐龙头，竞争 ...
- 新型低电压吊扇相比传统的交流感应电动机吊扇设计节省了大量能源
- 新闻｜低空经济：未来飞行的蓝海
- 龙年二月二｜瑞气满乾坤
- 三八妇女节｜祝所有女性节日快乐！
- 新闻｜Nvidia首席执行官称赞华为在人工智能芯片领域的竞争 ...
- 科普｜单片机的发展
KSZ8842-PMBL您现在的位置：首 页 > KSZ8842-PMBL
| KSZ8842-PMBL | |
| 宝星微库存：126 PCS | |
| 厂商： MICROCHIP | |
| 封装： LFBGA100 | |
| 年份： 21+ 22+ | |
| 备注： 宝星微原装正品 in stock | |
PDF：
|
|
KSZ8842-PMBL
2-Port 10/100 Managed Ethernet Switch
The KSZ8842-series of 2-port switches includes PCI and non-PCI CPU interfaces.
The datasheet describes the KSZ8842-PMQL/PMBL PCI CPU interface chips. KSZ8842-PMQL is PQFP package chip, KSZ8842-PMBL is LFBGA package chip. For information on the KSZ8842-MQL/MBL CPU non-PCI interface switches, refer to the KSZ8842-MQL/MBL datasheet.
The KSZ8842-PMQL/PMBL is the industry's first fully managed 2-port switch with a 32-bit/33MHz PCI processor interface. It is a proven, 4th generation, integrated Layer 2 switch that is compliant with the IEEE 802.3u standard. An industrial temperature grade version of the KSZ8842-PMQL/PMBL, also can be ordered the KSZ8842-PMQLI/PMBL AM. The KSZ8842-PMQL/PMBL can be configured as a switch or as a low-latency (<310 nanoseconds) repeater in latency-critical, embedded or industrial Ethernet applications.
For industrial automation applications, the KSZ8842-PMQL/PMBL can run in half-duplex mode regardless of the application. The KSZ8842-PMQL/PMBL offers an extensive feature set that includes tag/port-based VLAN, quality of service (QoS) priority management, management information base (MIB) counters, and CPU control/data interfaces to effectively address Fast Ethernet applications. The KSZ8842-PMQL/PMBL contains two 10/100 transceivers with patented, mixed-signal, low-power technology three media access control (MAC) units, a direct memory access (DMA) channel, a high-speed, non-blocking, switch fabric, a dedicated 1K entry forwarding table, and an on-chip frame buffer memory.
ksz8842系列2口交换机包括PCI和非PCI CPU接口。
该数据表描述了KSZ8842-PMQL/PMBL PCI CPU接口芯片。KSZ8842-PMQL为PQFP封装芯片，KSZ8842-PMBL为LFBGA封装芯片。有关KSZ8842-MQL/MBL CPU非pci接口交换机的信息，请参见KSZ8842-MQL/MBL数据表。
KSZ8842-PMQL/PMBL是业界首款完全管理的2端口交换机，具有32位/33MHz PCI处理器接口。它是经过验证的第4代集成第2层交换机，符合IEEE 802.3u标准。KSZ8842-PMQL/PMBL的工业温度级版本，也可以订购KSZ8842-PMQLI/PMBL AM。KSZ8842-PMQL/PMBL可在延迟关键型、嵌入式或工业以太网应用中配置为交换机或低延迟(310纳秒)中继器。
对于工业自动化应用，KSZ8842-PMQL/PMBL可以在任何应用中以半双工模式运行。KSZ8842-PMQL/PMBL提供了广泛的功能集，包括基于标签/端口的VLAN，服务质量(QoS)优先级管理，管理信息库(MIB)计数器和CPU控制/数据接口，以有效地解决快速以太网应用。KSZ8842-PMQL/PMBL包含两个10/100收发器，具有专利、混合信号、低功耗技术、三个媒体访问控制(MAC)单元、一个直接存储器访问(DMA)通道、一个高速、非阻塞、交换结构、一个专用的1K条目转发表和一个片上帧缓冲存储器。
Product Features
Non-blocking switch fabric assures fast packet delivery by utilizing a 1K entry MAC Address look-up engine and a store-and-forward architecture
Fully compliant with IEEE 802.3u standards
Full-duplex IEEE 802.3x flow control (Pause) with force mode option
Half-duplex back pressure flow control
IEEE 802.1Q VLAN support for up to 16 groups (full-range of VLAN IDs)
VLAN ID tag/untag options, per port basis
IEEE 802.1p/Q tag insertion or removal on a per-port basis (egress)
Programmable rate limiting at the ingress and egress port
Broadcast storm protection
IEEE 802.1d spanning tree protocol support
MAC filtering function to filter unicast packets
Unknown MAC address forwarding function
Direct forwarding mode enabling the processor to identify the ingress port and to specify the egress port
IGMP v1/v2 snooping support for multicast packet filtering
IPV6 Multicast Listener Discovery (MLD) snooping support
Management information base (MIB) counters for fully compliant statistics gathering: 32 MIB counters per port
Loop back modes for remote failure diagnostics
There are three kinds of register groups:
The PCI configuration registers are used to initialize and configure the PCI interface
The PCI control/status registers are used to communicate between the host and KSZ8842-PMQL/PMBL
Switch registers are used to support transceiver control and status. They are configurable on-the-fly (port-priority, 802.1p/d/Q, etc.)
Per port, 802.1p and DiffServ based
Re-mapping of 802.1p priority field on a per port basis
Full-chip hardware power-down (register configuration not saved) provides for low power dissipation
Per port-based software power-save on PHY (idle link detection, register configuration preserved)
Single power supply: 3.3V
Commercial Temperature Range: 0°C to +70°C
Industrial Temperature Range: -40°C to +85°C
Available in 128-pin PQFP and 100-ball LFBGA
产品特性
非阻塞交换结构通过利用1K入口MAC地址查找引擎和存储转发架构确保快速数据包传输
完全符合IEEE 802.3u标准
全双工IEEE 802.3x流量控制(暂停)与强制模式选项
半双工背压流量控制
IEEE 802.1Q VLAN支持最多16组(全范围VLAN id)
VLAN ID标签/取消标签选项，每个端口为基础
基于每个端口的IEEE 802.1p/Q标签插入或移除(出口)
可编程的速率限制在入口和出口端口
广播风暴防护
支持IEEE 802.1d生成树协议
MAC过滤功能，对单播报文进行过滤
未知MAC地址转发功能
直接转发模式，使处理器能够识别入端口并指定出端口
IGMP v1/v2 snooping支持组播包过滤
IPV6 Multicast Listener Discovery (MLD) snooping支持
管理信息库(Management information base)计数器，用于完全兼容的统计收集:每个端口32个MIB计数器
用于远程故障诊断的回环模式
寄存器组有三种类型:
PCI配置寄存器用于初始化和配置PCI接口
PCI控制/状态寄存器用于主机和KSZ8842-PMQL/PMBL之间的通信
开关寄存器用于支持收发器控制和状态。它们可以即时配置(端口优先级、802.1p/d/Q等)。
每个端口，802.1p和DiffServ为基础
基于每个端口重新映射802.1p优先级字段
全芯片硬件下电(不保存寄存器配置)提供低功耗
基于端口的软件在PHY上省电(空闲链路检测，保留寄存器配置)
单电源:3.3V
温度范围:0°C ~ +70°C
工业温度范围:-40℃~ +85℃
可提供128针PQFP和100球LFBGA
Parametrics
| Ethernet Bandwidth | 10/100Mbps |
| Interrupt Pin | Yes |
| Op Voltage | 3.3 |
| # Ethernet Ports | 3 |
| Interface | Host Bus/PCI |
| IEEE1588 | No |
| Temp Range Min | -40 |
| Temp Range Max | 85 |
| Managed | Yes |
| Copper Support | 10/100 (2) |
| Fiber Support | No |
| Supply Voltage (V) | 3.3 |
| Internal LDO | Yes |
| Vdd I/O (V) | 3.3/5.0 |
| LinkMD Cable Diag | Yes |
| Repeater Mode | Yes |
| On-Chip Termination | No |
| WOL | No |
| Largest Pkt-Size Bytes | 1916 |
| IPV6 | Yes |
| Flow Ctrl | Yes |
| Rate Limiting | Yes |
| Rapid Spanning Tree | No |
| Static MAC Addr | Yes |
