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| 型號(hào)： | 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)： | 40/82頁 |
| 文件大?。?/td> | 1056K |
| 代理商： | MC92600 |
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4-2
MC92600 WarpLink Users Manual
Repeater Mode
asserted, the device will force all transmitter link outputs to their disabled state as deTned
in Section 2.5.2, òTransmit Driver Operation,ó and will disable all internal clocking. An
important feature of standby mode is that the internal PLL is not disabled. It remains
operating and locked to the reference clock. Keeping the internal PLL enabled greatly
reduces the time needed to recover from standby mode to run mode, because only the
receiver initialization and word alignment start-up steps are required.
4.3 Repeater Mode
To send 32 bytes of data WarpLink Quad can be conTgured into a four-link receive-transmit
repeater by setting REPE high. In repeater mode data received on link A's receiver is
forwarded to link A's transmitter, link B's receiver to link B's transmitter, and so on. The
following conTguration inputs may be used to control how the repeater handles data that
passes through it: 10-bit interface, byte alignment, word synchronization, add/drop idle,
half-speed, and double data rate modes.
Certain conTgurations are more effective than others for various applications. The
transmitter at the source, the receiver at the destination, and the repeater must have
compatible conTgurations to ensure proper operation. The following sections describe how
each conTguration control affects repeater operation.
Table 4-2. Settings for Repeater Mode
Mode
Signals
Recommended
State
Description
Word Synchronization
Mode
WSE
Dont care
Enables word synchronization if desired. See
Section 4.3.3 for more details.
Byte Alignment Mode
BSYNC_0,
BSYNC_1
Any mode
Byte alignment is required for idle detection. All byte
alignment modes are supported in repeater mode.
See Section 4.3.2 for more details.
Add / Drop Idle Mode
ADIE
High
When enabled, allows the receiver to add/delete idle
patterns to maintain word alignment. This is the
recommended operating mode when the reference
clock is being used to time the receiver interface
(RCCE = Low) and there is a frequency offset
between the transmitter and receiver. Idles are
added or dropped to maintain word alignment.
This is also recommended when the four
transmitters have a frequency offset. (This is a
questionable application, however, it is supported.)
If disabled, a frequency offset will eventually cause
word synchronization to be lost.
10-bit Interface
TBIE
Dont care
When enabled, the idle character must be part of
the TBI code set.
When disabled, the idle is naturally supported by the
8B10B codes.
Recovered Clock
RCCE
Illegal
Recovered clock mode cannot be run in repeater
mode. Repeater mode uses reference clock mode
exclusively.
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