Visible to Intel only — GUID: wqa1704169618282
Ixiasoft
Visible to Intel only — GUID: wqa1704169618282
Ixiasoft
6.4. GTS Transceiver Reconfiguration Signals
You can access the transceiver control and status registers using the transceiver reconfiguration interface. The reconfiguration interface provides direct access to the programmable space of each channel. The signals are described below. For more information, refer to the GTS Transceiver PHY User Guide .
Port Name | Direction | Width | Description |
---|---|---|---|
reconfig_clk | Input | 1 | Reconfiguration clock. The clock frequency ranges from 100 MHz to 125 MHz. |
reconfig_reset | Input | 1 | Resets the Avalon® memory-mapped interface and all of the registers to which it provides access. |
reconfig_write | Input | 1 | Write enable signal. |
reconfig_read | Input | 1 | Read enable signal. |
reconfig_address | Input | 21 | Address bus. |
reconfig_writedata | Input | 32 | A 32-bit data write bus. reconfig_address specifies the address. |
reconfig_readdata | Output | 32 | A 32-bit data read bus. Drives read data from the specified address. Signal is valid after reconfig_waitrequest is deasserted. |
reconfig_waitrequest | Output | 1 | Indicates the Avalon® memory-mapped interface is busy. |
reconfig_readdatavalid | Output | 1 | Reconfiguration read data valid. |
To perform dynamic reconfiguration across various channels, use a common reconfiguration interface. The IP only supports the shared reconfiguration method. The reconfiguration address for the IP is 21 bits in size, with the most significant bit (MSB), bit 20, being set to '1' to enable or disable the PMA operation for selecting the PMA. The width of the reconfig_address is 21 bits, where bit 20 is not utilized. Bits 19 and 18 of the reconfig_address are designated for selecting the PMA lane, while the remaining bits, reconfig_address[17:0], specify a word-aligned address for each individual PMA lane.
For example to access the Transceiver PHY loopback register with the address 0x91418 for PMA lane-1, set the reconfig_address[20:0] to 0x64506. The reconfig address [19:0] is then directly relayed to the GTS PMA transceiver without alteration.