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Table 2-58: Bit Encodings for Basic Double Width Mode
For basic double width mode, total word length is 66-bit with 128-bit data, and 4-bit synchronous header.
Name Bit Functionality Description
rx_control
[1:0] Synchronous header The value 2'b01 indicates a data word.
The value 2'b10 indicates a control
word.
[7:2] Unused
[8] Synchronous header error status Active-high status signal that indicates
a synchronous header error.
[9] Block lock is achieved Active-high status signal indicating
when block lock is achieved.
[11:10] Synchronous header The value 2'b01 indicates a data word.
The value 2'b10 indicates a control
word.
[17:12] Unused
[18] Synchronous header error status Active-high status signal that indicates
a synchronous header error.
[19] Block lock is achieved Active-high status signal indicating
when Block Lock is achieved.
Table 2-59: Bit Encodings for Basic Mode
In this case, the total word length is 67-bit with 64-bit data and 2-bit synchronous header.
Name Bit Functionality Description
rx_control
[1:0] Synchronous header The value 2'b01 indicates a data word. The
value 2'b10 indicates a control word.
[2] Inversion control A logic low indicates that built-in disparity
generator block in the Enhanced PCS
maintains the running disparity.
UG-01143
2015.05.11
Enhanced PCS TX and RX Control Ports
2-67
Implementing Protocols in Arria 10 Transceivers
Altera Corporation
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