The following table shows the difference in
LOOKUP_INTERFACE_FREQ for SINGLE_CLOCK and DUAL_CLOCK modes.
TDM Factor | Lookup Rate (Mlps) | Lookup Interface Freq (MHz) | RAM Clock (MHz) | Clocking Mode |
---|---|---|---|---|
4 | Up to 150 | Minimum 4x LOOKUP_RATE | LOOKUP_IF_FREQ | SINGLE CLOCK |
4 | Up to 150 | Minimum LOOKUP_RATE | Minimum 4x LOOKUP_RATE | DUAL CLOCK |
2 | Up to 300 | Minimum 2x LOOKUP_RATE | LOOKUP_IF_FREQ | SINGLE CLOCK |
2 | Up to 300 | Minimum 2x LOOKUP_RATE | Minimum 2x LOOKUP_RATE | DUAL CLOCK |
1 | Up to 600 | LOOKUP_IF_FREQ | LOOKUP_IF_FREQ | SINGLE CLOCK |
Note: Dual clock mode is
recommended for lookup rates up to 300 Mlps.