4.3.2.2. Output Path Signals
| 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 the Altera 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 the FPGA core. Synchronous to the core_clk_out output from the IP. Each group has a 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. |