
Specification, Revision 1.2. The TX Out-of-Band Flow Control Block Signals for Application Use table
describes the signals on the application side of the TX out-of-band flow control block.
Table 10-2: TX Out-of-Band Flow Control Interface Signals
Signal Name Direction Width
(Bits)
Description
fc_clk Output 1 Output reference clock to an upstream out-of-band RX block.
Clocks the fc_data and fc_sync signals. You must connect
this signal to a device pin.
fc_data Output 1 Output serial data pin to an upstream out-of-band RX block.
You must connect this signal to a device pin.
fc_sync Output 1 Output sync control pin to an upstream out-of-band RX block.
You must connect this signal to a device pin.
Table 10-3: TX Out-of-Band Flow Control Block Signals for Application Use
Signal Name Direction Width
(Bits)
Description
double_fc_clk Input 1 Reference clock for generating the flow control output clock
fc_clk. The frequency of the double_fc_clk clock must be
double the intended frequency of the TX fc_clk output clock.
double_fc_
arst
Input 1 Asynchronous reset for the out-of-band TX block.
ena_status Input 1 Enable transmission of the lane status and link status to the
downstream out-of-band RX block. If this signal is asserted,
the lane and link status information is transmitted on fc_data.
If this signal is not asserted, only the calendar information is
transmitted on fc_data.
lane_status Input Number
of Lanes
Lane status to be transmitted to a downstream out-of-band RX
block if ena_status is asserted. Width is the number of lanes.
link_status Input 1 Link status to be transmitted to a downstream out-of-band RX
block if ena_status is asserted.
calendar Input 16 Calendar status to be transmitted to a downstream out-of-band
RX block.
Related Information
Interlaken Protocol Specification, Revision 1.2
UG-01140
2015.05.04
TX Out‑of‑Band Flow Control Signals
10-3
Out-of-Band Flow Control in the 50G Interlaken MegaCore Function
Altera Corporation
Send Feedback
Comentarios a estos manuales