User guide

Resetting Transceiver Channels
4
2015.05.11
UG-01143
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To ensure that transceiver channels are ready to transmit and receive data, you must properly reset the
transceiver PHY. Altera recommends a reset sequence that ensures the physical coding sublayer (PCS)
and physical medium attachment (PMA) in each transceiver channel initialize and function correctly.
You can either use the Altera Reset Controller IP or create your own reset controller.
Figure 4-1: Typical Transceiver PHY Implementation
(user-coded
Reset
Controller
Transceiver PHY Instance
tx_analogreset
tx_digitalreset
rx_analogreset
rx_digitalreset
tx_cal_busy
rx_cal_busy
rx_is_lockedtoref
rx_is_lockedtodata
Transmit
PLL
pll_powerdown
pll_cal_busy pll_locked
clock
You can logical OR the pll_cal_busy
and tx_cal_busy signals.
Receiver
PCS
Receiver
PMA
Transmitter
PCS
Transmitter
PMA
or Altera IP)
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