ep2s130 Altera Corporation, ep2s130 Datasheet - Page 84

• Manufacturer Part Number: ep2s130
• Description: Stratix Ii Device Family Data Sheet
• Manufacturer: Altera Corporation

I/O Structure
Figure 2–51. Stratix II IOE in Bidirectional I/O Configuration
Notes to
(1)
(2)
2–76
Stratix II Device Handbook, Volume 1
Column, Row,
Interconnect
or Local
All input signals to the IOE can be inverted at the IOE.
The optional PCI clamp is only available on column I/O pins.
ioe_clk[7..0]
Figure
2–51:
clkout
clkin
oe
ce_out
aclr/apreset
ce_in
sclr/spreset
Chip-Wide Reset
Figure 2–51
shows the IOE in bidirectional configuration.
Output Register
Input Register
OE Register
D
ENA
CLRN/PRN
ENA
D
CLRN/PRN
D
CLRN/PRN
ENA
Q
Q
Q
Drive Strength Control
Open-Drain Output
Pin Delay
Note (1)
Output
Input Register Delay
Logic Array Delay
Input Pin to
Input Pin to
OE Register
t
CO
Delay
V
CCIO
PCI Clamp (2)
V
Altera Corporation
CCIO
Bus-Hold
Circuit
Termination
On-Chip
Programmable
Pull-Up
Resistor
May 2007