4.4.4. Transceiver PHY Reset Controller Resource Utilization
This section describes the estimated device resource utilization for two configurations
of the transceiver PHY reset controller. The exact resource count varies by Quartus
Prime version number, as well as by optimization options.
Table 249. Reset Controller Resource Utilization
Configuration Combination ALUTs Logic Registers
Single transceiver channel approximately 50 approximately 50
Four transceiver channels, shared TX reset, separate RX resets approximately 100 approximately 150
4.5. Using a User-Coded Reset Controller
You can design your own user-coded reset controller instead of using Transceiver PHY
Reset Controller. Your user-coded reset controller must provide the following
functionality for the recommended reset sequence:
• A clock signal input for your reset logic
• Holds the transceiver channels in reset by asserting the appropriate reset control
signals
•
Checks the PLL status (for example, checks the status of pll_locked and
pll_cal_busy)
Note: You must ensure a stable reference clock is present at the PLL transmitter before
releasing pll_powerdown.
4.5.1. User-Coded Reset Controller Signals
Refer to the signals in the following figure and table for implementation of a user-
coded reset controller.
4. Resetting Transceiver Channels
UG-01143 | 2018.06.15
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