Altera ALTDLL - Manual (Page 73)

4–37 Chapter 4: Functional Description
ALTDQ_DQS Megafunction Ports
ALTDLL and ALTDQ_DQS Megafunctions User Guide © February 2012 Altera Corporation
DQ/DQS OCT Path Megafunction Ports
Table 4–14 summarizes all the ports on the megafunction that configure the OCT path.
The possible values for <IO> are DQS , DQSn , BIDIR_DQ , and OUTPUT_DQ .
Table 4–14. Megafunction Ports to Configure OCT Path (Part 1 of 2)
Port Name Type
Optional/
Required
Default Description
bidir_dq_hr_oct_in
[2*n
b
-1..0]
Input Optional GND This port feeds the half-rate bidirectional DQ signal for the
BIDIR_DQ_OCT_HR_DDIO_OUT:datainhi /
datainlo ports.
bidir_dq_oct_in
[n
b
-1..0]
Input Optional GND This port feeds the full-rate bidirectional DQ signal for the
BIDIR_DQ_OCT_FF:d ,
BIDIR_DQ_OCT_DDIO_OE:oe ,
BIDIR_DQ_OCT_DELAY_CHAIN1:datain ,
BIDIR_DQ_OCT_DELAY_CHAIN2:datain , or
bidir_dq_oct_out port.
bidir_dq_oct_out
[n
b
-1..0]
Output Optional — This port outputs signal from the
BIDIR_DQ_OCT_DELAY_CHAIN2:dataout ,
BIDIR_DQ_OCT_DELAY_CHAIN1:dataout ,
BIDIR_DQ_OCT_FF:q ,
BIDIR_DQ_OCT_DDIO_OE:dataout , or
bidir_dq_oct_in port.
dqs_hr_oct_in[1..0] Input Optional GND This port feeds the half-rate DQS signal for the
DQS_OCT_HR_DDIO_OUT:datainhi / datainlo
ports.
dqs_oct_in Input Optional GND This port feeds the full-rate DQS signal for the
DQS_OCT_FF:d , DQS_OCT_DDIO_OE:oe ,
DQS_OCT_DELAY_CHAIN1:datain ,
DQS_OCT_DELAY_CHAIN2:datain , or
dqs_oct_out port.
dqs_oct_out Output Optional — This port outputs signal from the
DQS_OCT_DELAY_CHAIN2:dataout ,
DQS_OCT_DELAY_CHAIN1:dataout ,
DQS_OCT_FF:q , DQS_OCT_DDIO_OE:dataout ,
or dqs_oct_in port.
dqsn_hr_oct_in[1..0] Input Optional GND This port feeds the half-rate DQSn signal for the
DQSN_OCT_HR_DDIO_OUT:datainhi /
datainlo ports.
dqsn_oct_in Input Optional GND This port feeds the full-rate DQSn signal for the
DQSN_OCT_FF:d , DQSN_OCT_DDIO_OE:oe ,
DQSN_OCT_DELAY_CHAIN1:datain ,
DQSN_OCT_DELAY_CHAIN2:datain , or
dqsn_oct_out port.
dqsn_oct_out Output Optional — This port outputs signal from the
DQSN_OCT_DELAY_CHAIN2:dataout ,
DQSN_OCT_DELAY_CHAIN1:dataout ,
DQSN_OCT_FF:q ,
DQSN_OCT_DDIO_OE:dataout , or dqsn_oct_in
port.
hr_oct_reg_clk Input Optional GND This port feeds the half-rate clock signal for the
<IO>
_OCT_HR_DDIO_OUT:clkhi / clklo / muxsel .