
HSMC Connector J4B
RX_SENSE_N Output
The sink uses this to detect the source power.
• 0=Source DisplayPort cable is not powered.
• 1=Source DisplayPort cable is powered.
This is connected to the sink rx_pwr_detect input.
In the demonstration design, the rx_pwr_detect
input is set to 1 in the RTL.
RX_HPD Input
RX Hot Plug Detect.
The sink asserts HPD when both rx_cable_detect
and rx_pwr_detect are set to 1 and HPD is
enabled.
TX_HPD Output
TX Hot Plug Detect.
The HPD pulse duration is used to determine an
HPD event type: Hot Plugging/Unplugging or HPD
IRQ.
RX_ENA Input Device enable for RX Main Link redriver.
TX_ENA Input Device enable for TX Main Link redriver.
AUX_RX_PC, AUX_RX_NC I/O
RX AUX channel differential pair.
If the external AUX driver/receiver chip,
SN65MLVD200 (U3), is populated on Bitec card,
the FPGA device should not drive these differential
signals.
To avoid bus contention, remove the on-chip
bidirectional buffer, aux_buffer_rx, in the
demonstration top module. Instead, the FPGA
device should use AUX_RX_DRV_IN, AUX_RX_DRV_OE,
and AUX_RX_DRV_OUT signals.
Note: The rx_aux_in and rx_aux_out signals are
inverted. If the external AUX driver/receiver chip is
used, undo the inversion.
AUX_RX_DRV_IN Output
RX AUX channel input.
Use this signal if the external AUX driver/
receiver(U3) is populated.
AUX_RX_DRV_OE Input
RX AUX channel output enable.
Use this signal if the external AUX driver/
receiver(U3) is populated.
6-18
Required Hardware
UG-01131
2015.05.04
Altera Corporation
DisplayPort IP Core Hardware Demonstration
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