RAM trim control
| RM | N/A |
| RME | Read-Write margin enable control. This selects between the default Read-Write margin setting, and the external RM[3:0] Read-Write margin settting. |
| WPULSE | Write Assist Pulse to control pulse width of negative voltage on SRAM bitline. |
| RA | Read Assist control for WL under-drive. |
| WA | Write assist enable control (Active High).
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