Altera ALTDLL - Manual (Page 55)

4–19 Chapter 4: Functional Description
ALTIOBUF Megafunction and Delay Chains Integration
ALTDLL and ALTDQ_DQS Megafunctions User Guide © February 2012 Altera Corporation
Figure 4–12. Input Only—Complementary
ALTIOBUF
datain_p dataout_p
datain_n
IO_IBUF
ALTDQ_DQS
ALTIOBUF
dataout_n
IO_IBUF
Figure 4–13. Output Only—Single-Ended
Note to Figure 4–13 :
(1) The oe port is optional.
Figure 4–14. Output Only—Differential
Note to Figure 4–14 :
(1) The oe_p and oe_n ports are optional.
ALTIOBUF
oe (1)
dataout
ALTDQ_DQS
datain
IO_OBUF
ALTIOBUF
oe_p (1)
oe_n (1)
dataout
ALTDQ_DQS
datain
dataout_n
IO_OBUF
IO_OBUF
PSEUDO_DIFF_OUT