ep1s25 Altera Corporation, ep1s25 Datasheet - Page 126

• Manufacturer Part Number: ep1s25
• Description: Stratix Device Family Data Sheet
• Manufacturer: Altera Corporation

I/O Structure
Figure 2–65. Stratix IOE in DDR Input I/O Configuration
Notes to
(1)
(2)
(3)
2–112
Stratix Device Handbook, Volume 1
Column or Row
Interconnect
All input signals to the IOE can be inverted at the IOE.
This signal connection is only allowed on dedicated DQ function pins.
This signal is for dedicated DQS function pins only.
I/O Interconnect
Figure
[15..0]
2–65:
ioe_clk[7..0]
(1)
DQS Local
Bus (1), (2)
(1)
sclr
clkin
aclr/prn
Chip-Wide Reset
Enable Delay
Output Clock
Input Register
Input Register
Note (1)
D
ENA
CLRN/PRN
D
CLRN/PRN
ENA
Input Register Delay
Input Pin to
Q
Q
D
ENA
CLRN/PRN
To DQS Local
Latch
Bus (3)
Q
VCCIO
Altera Corporation
VCCIO
Optional
PCI Clamp
Bus-Hold
Circuit
July 2005
Programmable
Pull-Up
Resistor