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AL10051N3DL 参数 Datasheet PDF下载

AL10051N3DL图片预览
型号: AL10051N3DL
PDF下载: 下载PDF文件 查看货源
内容描述: 薄膜片式电感器 [THIN FILM CHIP INDUCTOR]
分类和应用: 电感器
文件页数/大小: 66 页 / 368 K
品牌: ABC [ ABC Taiwan Electronics Corp ]
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AL103 Revision 1.0  
3.15 SGRAM Interface  
All ports of the AL103 work in Store-And-Forward mode so that all ports can support both 10  
Mbps and 100 Mbps data speed. The AL103 utilizes a central memory buffer pool, which is shared  
by all ports within the same device. After a frame is received, it is passed across the SGRAM  
interface and stored in the buffer. During transmit, the frame is retrieved from the buffer pool and  
forwarded to the destination port.  
The AL103 is designed to use 8 Mbit SGRAM or 16 Mbit SGRAM to achieve low cost and high  
performance.  
The SGRAM is accessed in Page Burst Access Mode for very high-speed access. This burst mode  
is repeatedly sent to the same column. If burst mode reaches the end of the column address, it then  
wraps around to the first column address (=0) and continues to count until interrupted by the new  
read/write, pre-charge, or a burst stop command.  
The AL103 will initialize the SGRAM automatically and pre-charges all banks and inserts eight  
auto–refresh commands. It will also program the mode registers for the AL103’s read and write  
operations.  
SGRAM essentially is a SDRAM. Dynamic memories must be refreshed periodically to prevent  
data loss. The SGRAM uses refresh address counters to refresh automatically. The SGRAM auto-  
refresh command generates a pre-charge command internally in the SGRAM. The AL103 will  
insert an auto-refresh command once every 15 microseconds.  
4. Register Description  
Table 19: Register Tables Summary  
REVERSE  
REGISTER ID  
REGISTER DESCRIPTION  
EEPROM  
ADDRESS  
00  
01  
System Configuration I  
00,01  
02,03  
04,05  
06,07  
08,09  
0A,0B  
0C-19  
1A,1B  
1C,1D  
1E,1F  
20,21  
System Configuration II  
System Configuration III  
Reserved  
02  
03  
04  
Testing Register  
05  
Vendor Specific PHY Status  
Reserved  
06-0C  
0D  
0E  
Port 0 Configuration I  
Port 0 Configuration II  
Port 1 Configuration I  
Port 1 Configuration II  
0F  
10  
9/00  
Reference Only / Allayer Communications  
36  
 
 
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