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PM73487 参数 Datasheet PDF下载

PM73487图片预览
型号: PM73487
PDF下载: 下载PDF文件 查看货源
内容描述: 622 Mbps的ATM流量管理设备 [622 Mbps ATM Traffic Management Device]
分类和应用: 异步传输模式ATM
文件页数/大小: 251 页 / 2936 K
品牌: PMC [ PMC-SIERRA, INC ]
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Released  
Datasheet  
PM73487 QRT  
PMC-Sierra, Inc.  
PMC-980618  
Issue 3  
622 Mbps ATM Traffic Management Device  
Field (Bits)  
Description  
RX_CH_ALTERNATE_ENCODE  
(16)  
1
0
Enable RX_CH alternate congestion encoding. This set of values of the  
RX_CH_EXP_MAX_QD and RX_CH_EXP_CONG_QD defines many  
of the codepoints with higher values. This increases the resolution of the  
congestion limits where they are used most of the time. The table is  
shown in the text for RX_ALTERNATE_ENCODE.  
Disable RX_CH alternate encoding. This setting uses the original set of  
values which are approximately 2**N. The table is shown in the text for  
RX_ALTERNATE_ENCODE.  
DISABLE_P4  
(15)  
1
0
Disable the 4th instance of the P process. The P process updates the data  
structures with the results of crossing the switch fabric. P4 works as a  
pair with S4.  
Enable this process.  
DISABLE_P3  
(14)  
1
0
Disable the 3rd instance of the P process. P3 works as a pair with S3.  
Enable this process.  
DISABLE_P2  
(13)  
1
0
Disable the 2nd instance of the P process. P2 works as a pair with S2.  
Enable this process.  
DISABLE_P1  
(12)  
1
0
Disable the 1st instance of the P process. P1 works as a pair with S1.  
Enable this process.  
DISABLE_S4  
(11)  
1
Disable the 4th instance of the S process. The S process selects the cells  
to be sent to the switch fabric. When  
DISABLE_RANDOMIZATION=1, S4 is associated with switch fabric  
port 3.  
0
1
Enable this process.  
DISABLE_S3  
(10)  
Disable the 3rd instance of the S process.When  
DISABLE_RANDOMIZATION=1, S3 is associated with switch fabric  
port 2.  
0
1
Enable this process.  
DISABLE_S2  
(9)  
Disable the 2nd instance of the S process. When  
DISABLE_RANDOMIZATION=1, S2 is associated with switch fabric  
port 1.  
0
1
Enable this process.  
DISABLE_S1  
(8)  
Disable the 1st instance of the S process. When  
DISABLE_RANDOMIZATION=1, S1 is associated with switch fabric  
port 0.  
0
Enable this process.  
DROP_ALL_RX_CELLS  
(7)  
1
0
Drop all cells received in the RX direction.  
Normal operation.  
DISABLE_U3  
(6)  
1
0
Disable the 3rd instance of the U process. The U process enqueues the  
cells onto the data structures.  
Enable this process.  
DISABLE_U2  
(5)  
1
0
Disable the 2nd instance of the U process.  
Enable this process.  
DISABLE_U1  
(4)  
1
0
Disable the 1st instance of the U process.  
Enable this process.  
126  
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