Altera ALTDLL - Manual (Page 113)

A–12 Appendix A: Clear Box Generator
Clear Box Generator Options
ALTDLL and ALTDQ_DQS Megafunctions User Guide © February 2012 Altera Corporation
DQ_INPUT_REG_CLK_SOURCE Optional dqs_bus dqs_bus,
Core If Core , _INPUT_FF:clk /
_DDIO_IN:clk port on the
primitive is fed by
dq_input_reg_clk port on the
megafunction
If dqs_bus , _INPUT_FF:clk
/ _DDIO_IN:clk port on the
primitive is fed by dqs_bus_out
port on the megafunction
DQ_INPUT_REG_CLK_USE_
CLKN
Optional FALSE FALSE, TRUE If TRUE , _DDIO_IN:clk port
on the primitive is fed by
dqs_bus_out port on the
megafunction and
_DDIO_IN:clkn port on the
primitive is fed by dqsn_bus_out
port on the megafunction
USE_DQ_IPA Optional FALSE FALSE, TRUE Instantiates _IPA_HIGH /
_IPA_LOW if TRUE
USE_DQ_IPA_PHASECTRLIN Optional FALSE FALSE, TRUE _IPA_HIGH.use_phasectr
lin port on the primitive
_IPA_LOW.use_phasectrl
in port on the primitive
DQ_IPA_PHASE_SETTING Optional 0 0..7 _IPA_HIGH.phase_settin
g port on the primitive
_IPA_LOW.phase_setting
port on the primitive
DQ_IPA_ADD_INPUT_CYCLE_
DELAY
Optional FALSE FALSE, TRUE,
DYNAMIC _IPA_HIGH.add_input_cy
cle_delay port on the primitive
_IPA_LOW.add_input_cyc
le_
delay port on the primitive
DQ_IPA_BYPASS_OUTPUT_
REGISTER
Optional FALSE FALSE, TRUE _IPA_HIGH.bypass_outpu
t_
register port on the primitive
_IPA_LOW.bypass_output
_
register port on the primitive
DQ_IPA_ADD_PHASE_
TRANSFER_REG
Optional FALSE FALSE, TRUE,
DYNAMIC _IPA_HIGH.add_phase_
transfer_reg port on the primitive
_IPA_LOW.add_phase_
transfer_reg port on the primitive
Table A–7. Megafunction Parameters to Configure DQ Input Path (Part 2 of 3)
Parameter Name
Optional/
Required Default Legal Values Description