PHY Lite for Parallel Interfaces Intel® FPGA IP User Guide

ID 683716
Date 4/10/2023
Public

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2.3.2.2. Output Path Signals

Table 16.  Output Path SignalsOutput path signals are signals that are available when you set Pin Type to either Output or Bidirectional. The <n> in the signal names in the following table represents the group number in the IP
Signal Name Direction Width Description

group_<n>_data_from_core

Input

Quarter rate-DDR: 8 x PIN_WIDTH

Half rate-DDR: 4 x PIN_WIDTH

Full rate-DDR: 2 x PIN_WIDTH

Quarter-rateSDR: 4 x PIN_WIDTH

Half rate-SDR: 2 x PIN_WIDTH

Full rate-SDR: 1 x PIN_WIDTH

Data signal from Intel FPGA core. Synchronous to the core_clk_out output from the IP.
group_oe_from_core Input

Quarter-rate: 4

Half-rate: 2

Full-rate: 1

Output enable signal from FPGA core. Synchronous to the core_clk_out output from the IP.

Each group has separate output enable.

group_strobe_out_en Input

Quarter-rate: 4

Half-rate: 2

Full-rate: 1

Strobe output enable from FPGA core. Synchronous to the core_clk_out output from the IP.

Each group has separate strobe enable.

group_strobe_from_core Input

Quarter-rate:8

Half-rate:4

Full-rate:2

Strobe pattern from core. Simple strobe pattern can be generated by this signal with 8’h55 values.

group_<n>_data_out

/group_<n>_data_io

Output/ Bidirectional 1 to 22

Data output from the IP. Synchronous to the group_<n>_strobe_out or group_<n>_strobe_io output from the IP.

If Pin Type is set to Output, the group_<n>_data_out signals are used. If Pin Type is set to Bidirectional, the group_<n>_data_io signals are used.

group_<n>_data_out_n

/group_<n>_data_io_n

Output/ Bidirectional 1 to 22

Differential data output from IP. Synchronous to the group_<n>_strobe_out_n or group_<n>_strobe_io_n output from the IP.

group_<n>_strobe_out/ group_strobe_io/ group_<n>_strobe_io Output/ Bidirectional 1 Positive output strobe from the IP. If the Pin Type is set to Output, the group_<n>_strobe_out signal is used. If the Pin Type is set to Bidirectional, the group_<n>_strobe_io signal is used.
group_<n>_strobe_out_n / group_<n>_strobe_io_n Output/ Bidirectional 1

Negative output strobe from the IP.

This is used if Strobe Configuration is set to Differential.

If the Pin Type is set to Output, the group_<n>_strobe_out_n signal is used. If the Pin Type is set to Bidirectional, the group_<n>_strobe_io_n signal is used.