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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 0x08A, 0x0AA, 0x0CA, 0x0EA, 0x10A, 0x12A, 0x14A, 0x16A:  
Logical Channel Base Address  
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  
LCBA[10]  
LCBA[9]  
LCBA[8]  
LCBA[7]  
LCBA[6]  
LCBA[5]  
LCBA[4]  
LCBA[3]  
0
0
0
0
0
0
0
0
LCBA[10:3]  
These registers in conjunction with the LCBA[11] bit of the Logical Channel  
Range / Logical Channel Base Address MSB registers determine the location  
of the logical channels for the serial links within the available address space  
for the purposes of polling and transfer selection. This register is only  
relevant to the downstream direction; no address remapping is done in the  
upstream.  
The value of LCBA[11:3]*8 is subtracted from the TADR[11:0] input value  
sampled. If the difference is within the range set by the LCAR[1:0] register  
bits, TPA will drive the buffer availability status (provided the TPAEN register  
bit is logic 1) of the logical channel whose index matches the difference.  
The value of LCBA[11:3]*8 is subtracted from the ADDR[11:0] value encoded  
in the cell structures (see Fig. 3) received on TDAT[15:0]. If the difference is  
within the range set by the LCAR[1:0] register bits, the cell shall be written to  
the logical channel buffer whose index matches the difference.  
Note that address wraps are supported. For example, if LCBA[11:3] is 0x1FF  
and the range is 32 addresses, the addresses from 0xFF8 through 0xFFF  
and 0x000 through 0x017 are matched.  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
99  
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