參數(shù)資料
型號(hào)： MC92600CJUB
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： SPECIALTY MICROPROCESSOR CIRCUIT, PBGA217
封裝： 23 X 23 MM, 2.32 MM HEIGHT, 1.27 MM PITCH, PLASTIC, BGA-217
文件頁(yè)數(shù)： 37/98頁(yè)
文件大?。?/td> 1288K
代理商： MC92600CJUB
3-14
MC92600 SERDES User’s Manual
MOTOROLA
Receiver Interface Error Codes
3.6
Receiver Interface Error Codes
The receiver’s status and data error conditions are coded on the RECV_x_ERR,
RECV_x_IDLE and RECV_x_K signals. When RECV_x_ERR is low, the receiver is
operating normally and no error conditions exist (with exception of underrun/overrun error
in byte mode.) When RECV_x_ERR is high, the data on the receiver’s output is
questionable due to an error condition or lack of synchronization. Initially, RECV_x_ERR
is asserted indicating that the receiver is in one of its start-up phases. Table 3-5 describes
the error conditions and their signal coding for byte interface mode.
Table 3-5. Receiver Interface Error Codes (Byte Interface)
RECV_x_ERR
RECV_x_K
RECV_x_IDLE
Priority
Description
Low
8
Normal operation, valid data character received.
Low
High
3
Overrun/Underrun—The 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
6
Normal operation, valid idle (K28.5) character
received.
High
Low
4
Code Error—The 8B/10B decoder detected an illegal
character.
High
Low
High
5
Disparity Error—The 8B/10B decoder detected a
disparity error.
High
Low
1
Not byte Sync—The receiver is in start-up or has lost
byte alignment and is searching for alignment.
High
2
Not Word Sync—The receiver is byte synchronized
but has not achieved or has lost word alignment and
is searching for alignment.
Table 3-6 describes the error conditions and their signal coding for 10-bit interface
mode.
Table 3-6. Receiver Interface Error Codes (10-Bit Interface)
RECV_x_ERR
RECV_x_IDLE
Priority
Description
Low
4
Normal operation, non-idle character received.
Low
High
3
Normal operation, idle (K28.5) character received.
High
Low
1
Not byte/word sync—The receiver is in start-up or has lost
byte or word alignment and is searching for alignment.
High
2
Overrun/Underrun—The receiver interface synchronization
logic detected and overrun/underrun condition. Data may be
dropped or repeated.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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