參數(shù)資料
型號: MC92600
廠商: Motorola, Inc.
英文描述: High-speed, Full-duplex, Serial Data Interface(高速全雙工串行數(shù)據(jù)接口)
中文描述: 高速,全雙工,串行數(shù)據(jù)接口(高速全雙工串行數(shù)據(jù)接口)
文件頁數(shù): 28/82頁
文件大小: 1056K
代理商: MC92600
3-6
MC92600 WarpLink Quad Users Manual
Alignment Modes
3.3.1.2 Byte-Aligned with Fast Alignment/Realignment
Fast alignment mode operates the same as the one described in Section 3.3.1.1,
òByte-Aligned with Realignment,ó with one exception: detection of one misaligned idle
pattern causes loss of alignment. The alignment of the later idle pattern is adopted as valid
without interrupting data ow through the receiver.
3.3.1.3 Byte-Aligned with Idle Realignment and Disparity Word
Alignment
This alignment mode is the same as the one described in Section 3.3.1.1, òByte-Aligned
with Realignment.ó The difference in this alignment mode is related to the style of word
synchronization. Word synchronization between receivers is accomplished by
synchronizing the received characters to a unique word synchronization event in the
incoming character stream. In this byte alignment mode, the word synchronization event is
deTned to be a disparity-based idle sequence as described in Section 2.4.1, òTransmitting
Uncoded Data.ó See Section 3.3.2.1, òWord Synchronization Method,ó for more
information on word synchronization.
3.3.1.4 Non-Aligned
In this mode no attempt is made to align the incoming data stream. The bits are simply
accumulated into 10-bit characters and forwarded. This mode should be used only with
10-bit interface mode (TBIE = high) and with word synchronization disabled (WSE =
low).
3.3.2 Word Alignment
The four receivers in the WarpLink Quad can be used cooperatively to receive 32-bit
aligned word transfers. Word alignment is enabled by setting the word synchronization
enable input, WSE, high.
Word alignment, or word synchronization, is possible in both byte interface mode or in TBI
mode. However, word synchronization is dependent on the detection of simultaneously
transmitted word synchronization events that contain idle characters. Therefore, if
operating in TBI mode, the idle character must be a supported member of the code set.
3.3.2.1 Word Synchronization Method
Word synchronization aligns characters in the receivers alignment FIFO. Synchronization
is accomplished by lining up word synchronization events detected by each of the receivers,
such that all are coincident at the same stage of their FIFO.
A word synchronization event is deTned differently depending on the byte alignment
method selected. Table 3-3 shows the type of word synchronization event used for each
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