Visible to Intel only — GUID: bhc1410942042989
Ixiasoft
Visible to Intel only — GUID: bhc1410942042989
Ixiasoft
6.3.2.3. Input Path Signals
Signal Name | Direction | Width | Description |
---|---|---|---|
data_to_core | Output | Quarter-rate DDR: 8 x PIN_WIDTH Half-rate DDR: 4 x PIN_WIDTH Full-rate DDR: 2 x PIN_WIDTH Quarter-rate SDR: 4 x PIN_WIDTH Half-rate SDR: 2 x PIN_WIDTH Full-rate SDR: 1 x PIN_WIDTH |
Output data to the core logic. Valid on rdata_valid. Synchronous to the core_clk output from the PHY Lite for Parallel Interfaces Intel® FPGA IP. |
rdata_en | Input | Quarter-rate: 4 Half-rate: 2 Full-rate: 1 |
This signal represents the number of expected words to read from the external device. This signal is set to high after a read command is issued. Synchronous to the core_clk output from the PHY Lite for Parallel Interfaces Intel® FPGA IP. When using the IP as a receiver, assert this signal after interface_locked signal is asserted and strobe_in is stable. |
rdata_valid | Output | Quarter-rate: 4 Half-rate: 2 Full-rate: 1 |
This signal determines which data are valid when reading from Read FIFO. Delayed by READ_LATENCY with margin and aligned to the core clock rate. For example, in quarter-rate, the delay is a multiple of 4 external clock cycles. Synchronous to the core_clk output from the PHY Lite for Parallel Interfaces Intel® FPGA IP. |
data_in/ data_io |
Input/Bidirectional | 1 to 48 if data configuration is Single Ended 1 to 24 if data configuration is Differential |
Input and output data from/to external device. Synchronous to the strobe_in or strobe_io input. The first data_in must be associated with positive edge of strobe_in/strobe_io. If the pin type is set to Input, the data_in ports are used. If the pin type is set to bidirectional, the data_io ports are used. |
data_in_n/ data_io_n |
Input/Bidirectional | 1 to 24 | Negative data input/output from external device enabled when data configuration is set to Differential. Data is synchronous to the strobe_in or strobe_io input. If the pin type is set to Input, the data_in_n ports are used. If the pin type is set to bidirectional, the data_io_n ports are used. |
strobe_in/strobe_io | Input/Bidirectional | 1 | Input and output strobe from/to external device. If the pin type is set to Input, the strobe_in signal is used. If the pin type is set to Bidirectional, the strobe_io signal is used. |
strobe_in_n/strobe_io_n | Input/Bidirectional | 1 | Negative strobe from/to external device. This is used if the Strobe Configuration parameter is set to Differential or Complementary. If the pin type is set to Input, the strobe_in_n signal is used. If the pin type is set to Bidirectional, the strobe_io_n signal is used. |