參數(shù)資料
型號: PM5372-BI
英文描述: Telecommunication IC
中文描述: 通信集成電路
文件頁數(shù): 137/169頁
文件大?。?/td> 989K
代理商: PM5372-BI
TSE Transmission Switch Element Datasheet
Released
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1991258, Issue 7
137
OCA implies OFA until character alignment is re-achieved. OCA will most likely cause some
LCVs but not necessarily a continual stream of them. Since character boundaries are not known,
framing and disparity are effectively meaningless anyway.
OFA, by itself, does not cause any of the other conditions.
FUO may produce zero, one or many LCVs, depending on how the FIFO overrun/underrun
occurs.
Persistent LCVs (five or more in any sequence of 15 characters) cause OCA.
12.9 Accessing Indirect Registers
Indirect registers are used to conserve address space in the TSE. Writing the indirect address
register accesses indirect registers. The following steps should be followed for writing to indirect
registers:
Read the BUSY bit. If it is equal to logic 0, continue to step 2. Otherwise, continue polling the
BUSY bit.
Write the desired configurations for the channel into the indirect data registers.
Write the channel number (indirect address) to the indirect address register with RWB set to logic
0.
Read BUSY. Once it equals 0, the indirect write has been completed.
The following steps should be followed for reading indirect registers:
Read the BUSY bit. If it is equal to logic 0, continue to step 2. Otherwise, continue polling the
BUSY bit.
Write the channel number (indirect address) to the indirect address register with RWB set to logic
1.
Read the BUSY bit. If it is equal to logic 0, continue to 4. Otherwise, continue polling the BUSY
bit.
Read the indirect data registers to find the state of the register bits for the selected channel
number.
12.10 Using the Performance Monitoring Features
The performance monitor counters within the TSE are the R8FA line code violation counters. The
counters will saturate and not roll over if they reach their maximum value.
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