User guide

Signal Name Direction Description
led_char_err Output 10-bit character error. Asserted for one rx_
clkout_1g cycle when an erroneous 10-bit
character is detected. Synchronous to mgmt_
clk.
led_link Output When asserted, this signal indicates
successful link synchronization. Synchro‐
nous to mgmt_clk.
led_disp_err Output When asserted, this signal indicates a 10-bit
running disparity error. Asserted for one
rx_clkout_1g cycle when a disparity error
is detected. A running disparity error
indicates that errors were detected on more
received groups than the previous and
possibly current groups. Synchronous to
mgmt_clk.
led_an Output This signal indicates the auto-negotiation
status. The PCS function asserts this signal
when an autonegotiation completes.
Synchronous to mgmt_clk.
Serial Data Interface
Table 2-130: Serial Data Signals
Signal Name Direction Description
rx_serial_data Input RX serial input data
tx_serial_data Output TX serial output data
Control and Status Interfaces
Table 2-131: Control and Status Signals
Signal Name Direction Clock Domain Description
led_link
Output
Synchronous to rx_
clkout
When asserted, indicates successful link synchro‐
nization.
led_disp_err
Output
Synchronous to rx_
clkout
Disparity error signal indicating a 10-bit running
disparity error. Asserted for one rx_clkout_1g
cycle when a disparity error is detected. A running
disparity error indicates that more than the
previous and perhaps the current received group
had an error.
led_an
Output
Synchronous to rx_
clkout
Clause 37 Auto-negotiation status. The PCS
function asserts this signal when auto-negotiation
completes.
2-180
Serial Data Interface
UG-01143
2015.05.11
Altera Corporation
Implementing Protocols in Arria 10 Transceivers
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