Visible to Intel only — GUID: riq1599634283935
Ixiasoft
Visible to Intel only — GUID: riq1599634283935
Ixiasoft
2.3.2.3. Input Path Signals
Signal Name | Direction | Width | Description |
---|---|---|---|
group_<n>_data_to_core | Output | Quarter-rate DDR: 8 x PIN_WIDTH Quarter-rate SDR: 4 x PIN_WIDTH |
Output data to the core logic. Valid on group_<n>_rdata_valid. Synchronous to the core_clk_out output from the IP. |
group_rdata_en | Input | Quarter-rate: 4 |
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_out output from the IP. When using the IP as a receiver, assert this signal after interface_locked signal is asserted and group_strobe_in is stable. This signal is shared across all groups. |
group_<n>_rdata_valid | Output | Quarter-rate: 4 |
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_out output from the IP. |
group_<n>_data_in/ group_<n>_data_io |
Input/Bidirectional | 1 to 34 |
Input and output data from/to external device. Synchronous to the group_<n>_strobe_in or group_<n>_strobe_io input. The first data_in must be associated with positive edge of group_<n>_strobe_in/group_<n>_strobe_io. If the pin type is set to Input, the group_<n>_data_in ports are used. If the pin type is set to bidirectional, the group_<n>_data_io ports are used. |
group_<n>_strobe_in/ group_<n>_strobe_io | Input/Bidirectional | 1 | Input and output strobe from/to external device. If the pin type is set to Input, the group_<n>_strobe_in signal is used. If the pin type is set to Bidirectional, the group_<n>_strobe_io signal is used. |
group_<n>_strobe_in_n/group_<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. If the pin type is set to Input, the group_<n>_strobe_in_n signal is used. If the pin type is set to Bidirectional, the group_<n>_strobe_io_n signal is used. |