Altera DisplayPort MegaCore Function - Manual (Page 79)

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
Send Feedback