14.11.6 Tri-State Buffer Macros
Names for the bi-directional buffers are composed of up to 4 parts:
- A base name indicating the type of buffer :TRIBUFF
- Optional IO Technology like LVCMOS
- An optional number code 8,12,16,24 indicating 1x, 2x, 3x or 4x-drive strength.
- An optional one character code (S/F) indicating high(F) slew or low(S) slew
- An optional one character code (U/D) designating a pull-up/down resistor. When the buffer has no resistor, this code is omitted.
For Example:
- TRIBUFF_LVCMOS25 - A bi-directional LVCMOS buffer with 2.5 CMOS voltage levels, pull-up resistor
- TRIBUFF_S_8- A bi-directional buffer with low slew and 1x drive strength
TRIBUFF_X
This component is supported by Accelerator families.
- Function: Tristate Output, High Slew
- Input: D, E
- Output: PAD
| E | PAD |
|---|---|
| 0 | Z |
| 1 | D |
| Family | Seq | I/O |
|---|---|---|
| All | — | 1 |
| Name | Description |
|---|---|
| TRIBUFF_LVCMOS25 | LVCMOS Tri-state buffer with 2.5 CMOS voltage level |
| TRIBUFF_LVCMOS25U | LVCMOS Tri-state buffer with 2.5 CMOS voltage level, pull-up resistor |
| TRIBUFF_LVCMOS25D | LVCMOS Tri-state buffer with 2.5 CMOS voltage level, pull-down resistor |
| TRIBUFF_LVCMOS18 | LVCMOS Tri-state buffer with 1.8 CMOS voltage level |
| TRIBUFF_LVCMOS18U | LVCMOS Tri-state buffer with 1.8 CMOS voltage level, pull-up resistor |
| TRIBUFF_LVCMOS18D | LVCMOS Tri-state buffer with 1.8 CMOS voltage level, pull-down resistor |
| TRIBUFF_LVCMOS15 | LVCMOS Tri-state buffer with 1.5 CMOS voltage level |
| TRIBUFF_LVCMOS15U | LVCMOS Tri-state buffer with 1.5 CMOS voltage level, pull-up resistor |
| TRIBUFF_LVCMOS15D | LVCMOS Tri-state buffer with 1.5 CMOS voltage level, pull-down resistor |
| TRIBUFF_PCI | PCI Tri-state buffer |
| TRIBUFF_PCIX | PCIX Tri-state buffer |
| TRIBUFF_GTLP25 | GTLP Tri-state buffer with 2.5 CMOS voltage level |
| TRIBUFF_GTLP33 | GTLP Tri-state buffer with 3.3 CMOS voltage level |
| TRIBUFF_F_8 | Tri-state buffer with high slew and 8 mA drive strength |
| TRIBUFF_F_8U | Tri-state buffer with high slew and 1x drive strength, pull-up resistor |
| TRIBUFF_F_8U | Tri-state buffer with high slew and 1x drive strength, pull-down resistor |
| TRIBUFF_F_12 | Tri-state buffer with high slew and 2x drive strength |
| TRIBUFF_F_12U | Tri-state buffer with high slew and 2x drive strength, pull-up resistor |
| TRIBUFF_F_12D | Tri-state buffer with high slew and 2x drive strength, pull-down resistor |
| TRIBUFF_F_16 | Tri-state buffer with high slew and 3x drive strength |
| TRIBUFF_F_16U | Tri-state buffer with high slew and 3x drive strength, pull-up resistor |
| TRIBUFF_F_16D | Tri-state buffer with high slew and 3x drive strength, pull-down resistor |
| TRIBUFF_F_24 | Tri-state buffer with high slew and 4x drive strength |
| TRIBUFF_F_24U | Tri-state buffer with high slew and 4x drive strength, pull-up resistor |
| Name | Description |
| TRIBUFF_F_24D | Tri-state buffer with high slew and 4x drive strength, pull-down resistor |
| TRIBUFF_S_8 | Tri-state buffer with low slew and 1x drive strength |
| TRIBUFF_S_8U | Tri-state buffer with low slew and 1x drive strength, pull-up resistor |
| TRIBUFF_S_8U | Tri-state buffer with low slew and 1x drive strength, pull-down resistor |
| TRIBUFF_S_12 | Tri-state buffer with low slew and 2x drive strength |
| TRIBUFF_S_12U | Tri-state buffer with low slew and 2x drive strength, pull-up resistor |
| TRIBUFF_S_12D | Tri-state buffer with low slew and 2x drive strength, pull-down resistor |
| TRIBUFF_S_16 | Tri-state buffer with low slew and 3x drive strength |
| TRIBUFF_S_16U | Tri-state buffer with low slew and 3x drive strength, pull-up resistor |
| TRIBUFF_S_16D | Tri-state buffer with low slew and 3x drive strength, pull-down resistor |
| TRIBUFF_S_24 | Tri-state buffer with low slew and 4x drive strength |
| TRIBUFF_S_24U | Tri-state buffer with low slew and 4x drive strength, pull-up resistor |
| TRIBUFF_S_24D | Tri-state buffer with low slew and 4x drive strength, pull-down resistor |
| TRIBUFF_SSTL2_I | SSTL2 Class I Tri-state buffer with 2.5V CMOS Voltage Level |
| TRIBUFF_SSTL2_II | SSTL2 Class II Tri-state buffer with 2.5V CMOS Voltage Level |
| TRIBUFF_SSTL3_I | SSTL3 Class I Tri-state buffer with 3.3V CMOS Voltage Level |
| TRIBUFF_SSTL3_II | SSTL3 Class II Tri-state buffer with 3.3V CMOS Voltage Level |
| TRIBUFF_HSTL_I | HSTL Class I Tri-state buffer with 1.5V CMOS Voltage Level |