Altera ALTDLL - Manual (Page 80)

Chapter 4: Functional Description 4–44
ALTDQ_DQS Megafunction Ports
© February 2012 Altera Corporation ALTDLL and ALTDQ_DQS Megafunctions User Guide
dqsn_input_data_out Output Optional — This port outputs the signal from the DQSn input
path. This port is connected to the
DQSN_INPUT_DELAY_CHAIN:dataout or
dqsn_input_data_in port.
dqsn_oe_in Input Optional GND This port feeds the input signal for the DQSn OE
path. This port is connected to the
DQSN_OE_FF:d , DQSN_OE_DDIO_OE:oe ,
DQSN_OE_DELAY_CHAIN1:datain ,
DQSN_OE_DELAY_CHAIN2:datain ,
dqsn_oe_out port.
dqsn_oe_out Output Optional — This port is fed by the output signal from DQSn OE
path. This port can be driven by the
DQSN_OE_DELAY_CHAIN2:dataout ,
DQSN_OE_DELAY_CHAIN1:dataout ,
DQSN_OE_FF:q ,
DQSN_OE_DDIO_OE:dataout ,
dqsn_oe_in port.
dqsn_output_data_in Input Optional GND This port feeds the input signal for DQSn output
path. This port is connected to the
DQSN_OUTPUT_FF:d ,
DQSN_OUTPUT_DELAY_CHAIN1:datain ,
DQSN_OUTPUT_DELAY_CHAIN2:datain ,
or dqsn_output_data_out port.
dqsn_output_data_in_hig
h
Input Optional GND This port feeds the full-rate DDR input signal
(rising edge) to the DQSn output path. This port is
connected to the
DQSN_OUTPUT_DDIO_OUT:datainhi port.
dqsn_output_data_in_low Input Optional GND This port feeds the full-rate DDR input signal
(falling edge) to the DQSn output path. This port is
connected to the
DQSN_OUTPUT_DDIO_OUT:datainlo port.
dqsn_output_data_out Output Optional — This port outputs the output signal from the DQSn
output path. This port can be driven by
DQSN_OUTPUT_DELAY_CHAIN2:dataout ,
DQSN_OUTPUT_DELAY_CHAIN1:dataout ,
DQSN_OUTPUT_FF:q ,
DQSN_OUTPUT_DDIO_OUT:dataout , or
dqsn_output_data_in port.
dqsn_sreset Input Optional GND This port is connected to all sreset ports in the
DQSn IO primitives that is used to synchronously
reset the registers in those primitives.
Table 4–18. Megafunction Ports to Configure DQSN IO Path (Part 2 of 2)
Port Name Type
Optional/
Required Default Description