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參數資料
| 型號： | AX88658AB |
| 廠商： | ASIX Electronics Corporation |
| 英文描述： | 8-Port 10/100/1000BASE-T Ethernet Switch |
| 中文描述： | 8端口10/100/1000BASE-T以太網交換機 |
| 文件頁數： | 6/36頁 |
| 文件大小： | 343K |
| 代理商： | AX88658AB |
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ASIX ELECTRONICS CORPORATION
6
AX88658AB 8-Port 10/100/1000BASE-T Ethernet Switch
CONFIDENTIAL
1.0 AX88658A Overview
1.1 General Description
The AX88658A Gigabit switch controller supports eight 10/100/1000 Mbps ports in wire-speed operation. The
AX88658A Gigabit switch controller provides eight 10/100/1000 Ethernet ports with RGMII/GMII/MII interface. For
each ports, the AX88658A supports GMII/RGMII (802.3ab, 1000BASE-T) interface with full-duplex operation at
Gigabit speed, full- or half-duplex operation at 10/100 Mbps speed (using 802.3/u, 10/100BASE-T) and polls the status
of PHYs with an embedded MPU.
The device supports 4K internal MAC addresses which are shared by all ports with an embedded SRAM. The
learning/routing engine is implemented with a two-way hash/linear algorithm to reduce possibility of routing collision.
Basically the AX88658A supports non-blocking wire speed forwarding rate and no Head-of-Line (HOL) blocking issue.
The AX88658A provides two flow-control mechanisms to avoid loss of data: an optional jamming based backpressure
flow control in the half-duplex operation and IEEE 802.3x in the full-duplex mode.
To support Quality of Service (QoS), each output port has two priority queues and their assignment can be based on the
802.1p priority field or Port-Pair setting. Each output port retrieves the frames from the shared buffer based on queuing
and sends them to the transmitting (Tx) FIFO.
1.2 AX88658A Block Diagram
Fig-1 AX88658A Block Diagram
10/100/1000 MAC
10/100/1000 MAC
10/100/1000 MAC
10/100/1000 MAC
10/100/1000 MAC
High Speed
Switch Fabric
Routing /Learning
Engine
Buffer Manager
Packet
Buffer
General Purpose
I/O Interface (GPIO)
RGMII/GMII PHY
Address Look-up Table
10/100/1000 MAC
10/100/1000 MAC
10/100/1000 MAC
EEPROM
Interface
GPIO
Configuration
Logic
RGMII/GMII PHY
RGMII/GMII PHY
RGMII/GMII PHY
RGMII/GMII PHY
RGMII/GMII PHY
RGMII/GMII PHY
RGMII/GMII PHY
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相關代理商/技術參數 |
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