GTS Serial Lite IV Intel® FPGA IP User Guide

ID 813966
Date 8/05/2024
Public
Document Table of Contents

2.6. Bandwidth Efficiency

Table 6.  Bandwidth Efficiency
Variables Settings
Transceiver mode NRZ
Streaming mode Full Basic
RS-FEC Disabled Disabled
Serial interface bit rate in Gbps (RAW_RATE) 10.3125 10.3125
Burst size of a transfer in number of word (BURST_SIZE) 1 2,048 4,194,304
Alignment period in clock cycle (SRL4_ALIGN_PERIOD) 4,096 4,096
64/66b encode 0.96969697 0.96969697
Overhead of a burst size in number of word (BURST_SIZE_OVHD) 2 2 0 3
Alignment marker period in clock cycle (ALIGN_MARKER_PERIOD) 81,916 81,916
Alignment marker width in clock cycle (ALIGN_MARKER_WIDTH) 0 0
Bandwidth efficiency 4 0.96827698 0.96922348
Effective rate (Gbps) 5 9.98535635625 9.9951171375
Maximum user clock frequency (MHz) 6 156.02119306640625 156.1737052734375
1 The BURST_SIZE for Basic mode approaches infinity, hence a large number is used.
2 In Full mode, the BURST_SIZE_OVHD size is inclusive of the START/END paired Control Words in a data stream.
3 For Basic mode, BURST_SIZE_OVHD is 0 because there is no START/END during streaming.
4 Refer to Link Rate and Bandwidth Efficiency Calculation for bandwidth efficiency calculation.
5 Refer to Link Rate and Bandwidth Efficiency Calculation for effective rate calculation.
6 Refer to Link Rate and Bandwidth Efficiency Calculation for maximum user clock frequency calculation.