參數(shù)資料
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(yè)數(shù): 36/82頁(yè)
文件大?。?/td> 1056K
代理商: MC92600
3-14
MC92600 WarpLink Quad Users Manual
Reference Clock Frequencies
3.6 Reference Clock Frequencies
The legal ranges of reference clock frequencies vary depending on the operating modes
selected. Table 3-5 shows the ranges allowed for each mode of operation.
3.7 Receiver Interface Error Codes
The receivers status and data error conditions are coded on the RECV_n_ERR,
RECV_n_IDLE and RECV_n_K signals. When RECV_n_ERR is low, the receiver is
operating normally and no error conditions exist (with exception of underrun/overrun error
in byte mode.) When RECV_n_ERR is high, the data on the receivers output is
questionable due to an error condition or lack of synchronization. Initially, RECV_n_ERR
is asserted indicating that the receiver is in one of its start-up phases. Table 3-6 describes
the error conditions and their signal coding for byte interface mode.
Table 3-5. Legal Reference Clock Frequency Ranges
DDRE
HSE
Reference Frequency
Min (MHz)
Reference Frequency
Max (MHz)
Link Transfer Rate
(Gigabaud)
Low
Low
95.00
135.0
1.350D0.950
Low
High
47.50
67.50
0.675D0.475
High
Low
47.50
67.50
1.350D0.950
High
High
23.75
33.75
0.675D0.475
Table 3-6. Receiver Interface Error Codes (Byte Interface)
RECV_n_ERR
RECV_n_K
RECV_n_IDLE
Priority
Description
Low
Low
Low
8
Normal operation, valid data character received.
Low
Low
High
3
Overrun/UnderrunThe receiver interface
synchronization logic detected an overrun/underrun
condition. Data may be dropped or repeated.
Low
High
Low
7
Normal operation, valid control character received.
Low
High
High
6
Normal operation, valid idle (K28.5) character
received.
High
Low
Low
4
Code ErrorThe 8B/10B decoder detected an
illegal character.
High
Low
High
5
Disparity ErrorThe 8B/10B decoder detected a
disparity error.
High
High
Low
1
Not byte SyncThe receiver is in start-up or has lost
byte alignment and is searching for alignment.
High
High
High
2
Not Word SyncThe receiver is byte synchronized
but has not achieved or has lost word alignment and
is searching for alignment.
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