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PM8621 参数 Datasheet PDF下载

PM8621图片预览
型号: PM8621
PDF下载: 下载PDF文件 查看货源
内容描述: NSE- 8G⑩标准产品数据表初步 [NSE-8G⑩ Standard Product Data Sheet Preliminary]
分类和应用:
文件页数/大小: 184 页 / 957 K
品牌: PMC [ PMC-SIERRA, INC ]
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NSE-8G™ Standard Product Data Sheet  
Preliminary  
RC1FP (ext)  
outgoing  
outgoing  
messages  
messages  
1
2
3
4
1
2
3
4
NSE C1FP  
(int)  
NSE Frame  
Interrupt  
NSE CPU  
tasks  
SBS samples new page  
bits and set up page  
switch  
Switch occurs in the SBS  
Write new DCB  
page bit and  
disable Frame  
interrupt  
Write new SBS  
page words  
Enable Frame  
Interrupt  
SBS sample  
new bit  
DCB sample  
new bit  
NSE DCB samples CMP  
bit and set up page switch  
Switch occurs in the NSE  
12.5 Controlling Frame Alignment in the Receive Port  
After external data corruption on any port it may be necessary to force OCA to reset the  
alignment of the R8TD block. In order to detect this out of alignment condition, three hardware  
functions are implemented for each port. The registers are:  
“Correct R8TD_RX_C1 Pulse Monitor”, 012h  
“Unexpected R8TD_RX_C1 Pulse Interrupt”, 013h  
“Missing R8TD_RX_C1 Pulse Interrupt”, 014h  
These are qualified against a delayed version of the RC1FP input, which should occur every 4 or  
48 frames and in agreement with mf_swap mode (DCB Configuration Register, 04Ch). If all  
active ports are using carrying the same frequency of C1 frame pulses (1 in 4 or 1 in 48) then the  
unexpected interrupt (013h) should be used to signal that a C1 code word was detected at the  
wrong time, software can then poll the monitor register (012h) to see if the error condition is  
permanent.  
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use  
Document ID: PMC-2010850, Issue 1  
143