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5.7. External PLL Interface Signals
The external PLL interface signals are only available in the L-Tile and H-Tile device variations. For the E-tile device variations, tie the input signals low. The output signals can float.
Signal Name | Feature Support | Width (Bits) | I/O Direction | Description |
---|---|---|---|---|
tx_pll_locked | ILK and ILA | 1 | Input | PLL-locked indication from external TX PLL. This signal is only available in Intel® Stratix® 10 H-tile device variations. |
tx_pll_cal_busy | 1 | Input | PLL-busy indication from external TX PLL. This signal is only available in Intel® Stratix® 10 H-tile device variations. |
|
tx_serial_clk | NUM_LANES | Input | High-speed clock for transceiver channel, provided from external TX PLL This signal is only available in Intel® Stratix® 10 H-tile device variations. |
|
tx_pll_powerdown | 1 | Output | Output signal from the IP core internal reset controller. The IP core asserts this signal to tell the external PLLs to power down. This signal is only available in Intel® Stratix® 10 H-tile device variations. |
|
mac_pll_locked | 1 | Input | Lock indicator for the PLL that generates mac_clkin. This signal is only available in PAM4 mode of E-Tile device variations. |
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