User guide
Reconfigura‐
tion Address
(HEX)
Reconfigura‐
tion Bit
Attribute
Name
Related
Addresses
Attribute
Encoding
Bit
Encoding
Description
0x13F [3:0] deser_factor
10 4'b0001 10-bit mode
64 4'b1110 64-bit mode
Examples of Enabling the PRBS Data Checker
Example 6-6: Enable the PRBS9 pattern checker in 10-bit mode
1. Write 0x02 to address 0x000 of the channel
2. Perform a read-modify-write to address x00A[7:0] with the following bits: 8’b1- - - - - - -
3. Perform a read-modify-write to address x00B[7:0] with the following bits: 8’b0010 00 - -
4. Perform a read-modify-write to address x00C[7:0] with the following bits: 8’b - - - - 1 - - 0
5. Perform a read-modify-write to address x13F[7:0] with the following bits: 8’b - - - - 0001
6. Write 0x03 to address 0x000 of the channel
Note:
A dash (-) indicates that the corresponding bit value should not be modified
Example 6-7: Enable the PRBS31 pattern checker in 64-bit mode
1. Write 0x02 to address 0x000 of the channel
2. Perform a read-modify-write to address x00A[7:0] with the following bits: 8’b1- - - - - - -
3. Perform a read-modify-write to address x00B[7:0] with the following bits: 8’b0000 11 - -
4. Perform a read-modify-write to address x00C[7:0] with the following bits: 8’b - - - - - - - 1
5. Perform a read-modify-write to address x13F[7:0] with the following bits: 8’b - - - - 1110
6. Write 0x03 to address 0x000 of the channel
Note:
A dash (-) indicates that the corresponding bit value should not be modified
Enabling PRBS Pattern Inversion
You can enable pattern inversion for PRBS data leaving or entering the PRBS data pattern generator and
checker, respectively. The following table shows the addresses and bits to invert either the generator or
checker. To invert the PRBS pattern for the PRBS generator or checker, follow these steps:
• To invert the PRBS pattern leaving the PRBS generator, perform a read-modify-write to bit[2] with a
value of 1'b1 to address 0x7.
• To invert the PRBS pattern entering the PRBS checker, perform a read-modify-write to bit[4] with a
value of 1'b1 to address 0xA.
UG-01143
2015.05.11
Examples of Enabling the PRBS Data Checker
6-53
Reconfiguration Interface and Dynamic Reconfiguration
Altera Corporation
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