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PM7351-BGI 参数 Datasheet PDF下载

PM7351-BGI图片预览
型号: PM7351-BGI
PDF下载: 下载PDF文件 查看货源
内容描述: [Support Circuit, 1-Func, CMOS, PBGA304, 31 X 31 MM, 1.51 MM HEIGHT, 1.27 MM PITCH, SBGA-304]
分类和应用: ATM异步传输模式电信电信集成电路
文件页数/大小: 174 页 / 1840 K
品牌: PMC [ PMC-SIERRA, INC ]
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RELEASED  
PM7351 S/UNI-VORTEX  
DATA SHEET  
PMC-1980582  
ISSUE 5  
OCTAL SERIAL LINK MULTIPLEXER  
Registers 0x090, 0x0B0, 0x0D0, 0x0F0, 0x110, 0x130, 0x150, 0x170:  
Transmit High-Speed Serial Configuration  
Bit  
Type  
Function  
Default  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
DSCR  
HSCR  
Unused  
0
1
X
0
0
0
1
0
DHCS  
CELLCRC  
PREPEND  
USRHDR[1]  
USRHDR[0]  
These registers configure, on a per-link basis, the format of the cells transmitted  
on the eight TXDn+/- serial links.  
USRHDR[1:0]:  
The USRHDR[1:0] bits determine the length of the User Header field of the  
transmitted cells. The User Header defaults to six bytes.  
USRHDR[1:0] Bytes in User Header  
00  
01  
10  
11  
4
5
6
Reserved  
PREPEND:  
The PREPEND bit determines if the User Prepend field is inserted into the  
transmitted cells. If PREPEND is logic 1, a two byte User Prepend is inserted  
after the System Prepend field.  
CELLCRC:  
The CELLCRC bit determines whether the entire high speed serial data  
structure is protected by a CRC-8 code word. The PREPEND bit must be  
logic 1 for this bit to have effect. If CELLCRC and PREPEND are logic 1, the  
second User Prepend byte is overwritten by the CRC-8 syndrome for the  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
104  
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