Visible to Intel only — GUID: bhc1411023535288
Ixiasoft
1.2.1. Setting the Transmitter Driver to Tri-State
Use the procedure below to set the transmitter driver to tri-state using Streamer mode 3.
To set the transmitter driver to tri-state:
- Ensure that the transceiver reconfiguration controller is correctly connected to the Native PHY IP core.
- Enable the .MIF streamer module by selecting the Enable channel/PLL reconfiguration option in the transceiver reconfiguration controller.
- Write the logical channel number to address 0x38.
- Write the MIF mode 0xC to address 0x3A.
- Write the rtx_pdb address 0x25A to address 0x3B.
- Write the Control and status register with a value of 0xE to address 0x3A to initiate a read.
- Read address 0x3c.
- With the data obtained from step 7, perform a RMW with the 15-bit data pattern that selects the rtx_pdb bit.
- Write the data pattern generated from step 8 to address 0x3C.
- Write the Control and status register with a value of 0xD to address 0x3A.
After changing rtx_pdb to 0 to set the transmitter driver in tri-state, tx_pma_rxfound will go high after asserting tx_pma_txdetectrx and tx_pma_qpipullup, if the RX link exists with a 42.5Ω termination, as shown in the following figure.