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)： 41/82頁
文件大?。?/td> 1056K
代理商： MC92600
Chapter 4. System Considerations
4-3
Repeater Mode
4.3.1 10-Bit Interface Mode
When the device is in TBI mode (TBIE = high) the internal 8B/10B encoder and decoder
are bypassed and the 10-bit data received is forwarded directly to the transmitter. Running
disparity is assumed correct and is not checked. This is important when using
disparity-based word synchronization where incorrect running disparity is used as a word
synchronization event marker. 10-bit mode must be enabled for disparity-based word
alignment to operate properly because it allows the improper disparity to pass through the
repeater.
When byte interface mode is enabled (TBIE = low), received data is passed through the
8B/10B decoder where it is converted into its eight-bit data or control byte. Running
disparity and code validity are checked and reported with the received byte at the receiver
interface as described in Section 3.5.4, òReceiver Interface Modes.ó The decoded byte is
re-coded by the transmitters 8B/10B encoder for transmission.
NOTE:
Byte interface mode must not be used with non-aligned mode
or disparity-based word synchronization.
4.3.2 Byte Alignment Mode
The byte alignment mode must be consistent with the transmitter and receiver with which
the repeater is being used. All byte alignment modes are supported in repeater mode.
When establishing byte alignment for the link through the repeater, the byte alignment
sequence must be repeated twice, once for the repeater and once for the destinations
receiver. For example, if the byte aligned with realignment mode is enabled
(BSYNC_0/BSYNC_1 = low/low), at least eight idle characters must be transmitted, four
for repeater alignment and four for the destinations receiver alignment.
4.3.3 Word Synchronization Mode
Word synchronization may be used in repeater mode. This allows the incoming bytes to be
synchronized into their corresponding words, removing cable skew from the transmission
Half-Speed Enable
HSE
Dont care
User programable depending on desired reference
clock frequency. See Section 4.3.6 for mode
details.
Double Data Rate
DDRE
Dont care
User programable depending on desired reference
clock frequency. See Section 4.3.6 for mode
details.
Table 4-2. Settings for Repeater Mode (Continued)
Mode
Signals
Recommended
State
Description
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