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IP178A PDF预览

IP178A

更新时间: 2024-02-25 16:10:41
品牌 Logo 应用领域
其他 - ETC 以太网局域网(LAN)标准
页数 文件大小 规格书
44页 1145K
描述
8-Port 10/100 Ethernet Integrated Switch

IP178A 技术参数

生命周期:Contact Manufacturer包装说明:,
Reach Compliance Code:unknown风险等级:5.63
Is Samacsys:NBase Number Matches:1

IP178A 数据手册

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(Advance Version  
IP178A  
8-Port 10/100 Ethernet Integrated Switch  
interface  
Feature  
Three-in-one 8 port 10/100 Ethernet switch  
- Built in an 8 port Ethernet switch engine  
- Built in 8 10/100M transceivers  
- Built in SSRAM  
Utilize single clock source (25Mhz)  
Utilize single power supply (2.5v)  
0.25um technology  
Packaged in 208 pin PQFP  
Support flow control  
- Support IEEE802.3x for full duplex mode operation  
- Support backpressure for half duplex mode  
operation  
General Description  
IP178A is an 8 port 10/100 Ethernet integrated switch. It  
consists of an 8-port switch controller and eight Fast  
Ethernet transceivers. Each of the transceivers complies  
with the IEEE802.3, IEEE802.3u, and IEEE802.3x  
specifications. The transceivers in IP178A are designed  
in DSP approach with advance 0.25um technology; this  
results in high noise immunity and robust performance.  
Two ports of IP178A can be configured as 100BaseFX.  
Built in up to 1K MAC address  
An 8 port switching fabric  
- Support two-level hashing algorithm to improve  
address collision  
- Support address aging  
- Store and forward mode  
- Broadcast storm protection  
- Full line speed capability of 148800 (14880)  
packets/sec for 100M (10M)  
The IP178A operates in store and forward mode. It  
stores the incoming packet to the internal SSRAM and  
learns the SA (source address) automatically if the  
packet is error free. The SA is stored to the internal  
address table. IP178A forwards a packet according to DA  
and address table. When the segments of destination  
ports are free, it reads the packet from the internal  
SSRAM and forwards it to the appropriate ports  
according to the address table. The incoming packets  
with errors are dropped. IP178A supports IEEE802.3x,  
optional backpressure, Auto MDI/MDI-X, CoS, port base  
VLAN, one MII port and various LED functions, etc.  
These functions can be configured to fit the different  
requirements by feeding operation parameters via  
EEPROM interface or pull up/down resistors on specified  
pins.  
- Support 1536 byte data transfer for VLAN traffic  
- Support one MII port  
- Support port base VLAN  
- Support CoS  
DSP approach transceivers  
- Auto negotiation  
- Fully digital adaptive equalizer and timing recovery  
module  
- Base line Wander correction  
- 10BaseT, 100BaseT, and 100BaseFX(port6, port7  
only) operation  
- Automatic MDI/MDI-X configuration  
LED status of Link, Receive, Full duplex, and Speed  
LED with power on diagnostic function  
Set operation parameters via pins or EEPROM  
Preliminary, Specification subject to change without notice  
1
IP178A-DS-P05  
Sep. 09, 2002  

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