Gen 4 Default TX Preset Register @0x374
This is register specifies the default transmitter preset and default receiver preset hint used by Controller for lanes that have not received 16G EQ TS2s during Recovery.RcvrConfig LTSSM state.
| Bits | SW | Name | Description | Reset |
|---|---|---|---|---|
| 3:0 | R/W | Default Gen4 Transmitter Preset [GDTXP] | Default Gen4 transmitter preset value used for a lane that did not receive 16G EQ TS2 in Recovery.RcvrCfg LTSSM state. | 0x0 |
| 6:4 | R | Reserved [R6] | Reserved | 0x0 |
| 7 | R | Reserved [R7] | Reserved | 0x0 |
| 18:8 | R/W | Supported 16G Preset [S16GPR] | This register can be used to program the Presets that are supported by local
Transmitter at 16Gbps. Default value of this register is determined by the
SUPPORTED_PRESET strap input. Note: At 8.0 GT/s and 16.0 GT/s all preset values must
be supported for Full swing signaling. Reduced swing signaling must implement presets
#4, #1, #9, #5,#6, and #3. |
11'h7ff |
| 31:19 | R | Reserved [R31] | Reserved | 0x0 |