This tab is used to set the runtime activity. The physical and throughput utilization values are used to determine the power estimate for the IP instance by defining the expected runtime activity. The physical utilization value is automatically calculated using the characteristics of the specified code(s).
- Physical Utilization
- Defines the utilization of SD-FEC functional blocks. The parameter value is calculated automatically based on the specified code configuration.
- Throughput Utilization
- Specifies activity in terms of instance throughput as a percentage of maximum throughput for the code configurations in use. For example, the maximum throughput of the DOCSIS v3.1 medium code is 1.57 Gb/s but if the block is operated at 1 Gb/s the activity figure can be reduced to ~64%. Note, the maximum throughput when different codes are interleaved can be higher or lower than the throughput of the individual codes.
Note: The following runtime loading parameters have been deprecated and are
no longer available unless you are upgrading from a previous revision
of the IP where these parameters had been set to non-default values.
- Percentage Loading
- Automatic or Manual. When Automatic, the appropriate Percentage Loading
parameter is updated based on the Throughput Utilization parameter and the
specific turbo or LDPC code parameters. When Manual
is selected, the following percentage loading parameters can be modified:
- Turbo Decoder Percentage Loading
- Percentage of maximum activity loading for this IP instance when configured for turbo decode.
- LDPC Decoder Percentage Loading
- Percentage of maximum activity loading for this IP instance when configured for LDPC decode.
- LDPC Encode Percentage Loading
- Percentage of maximum activity loading for this IP instance when configured for LDPC encode only.