10.1.21.3 Tri-State Buffers Implementation Rules
The following table lists the implementation rules for a tri-state buffer.
| Parameter | Value | Function |
| LPMTYPE | LPM_IO/LPM_OB_IO | Tri-state buffers |
| LPM_HINT | TRIBUFF/OTB (Flash) | Regular tri-state buffers |
| TRIBUFF_SP (Axcelerator Only) | Special tri-state buffers | |
| TRIBUFF_PU (Axcelerator Only) | Pull-up tri-state buffers | |
| TRIBUFF_PD (Axcelerator Only) | Pull-down tri-state buffers |
* Not supported in ProASIC® PLUS