ep20k1000e Altera Corporation, ep20k1000e Datasheet - Page 39

• Manufacturer Part Number: ep20k1000e
• Description: Programmable Logic Device Family
• Manufacturer: Altera Corporation

Altera Corporation
Figure 25. APEX 20K Bidirectional I/O Registers
Note to
(1)
or Local Interconnect
The output enable and input registers are LE registers in the LAB adjacent to the bidirectional pin.
Row, Column,
Figure
25:
4 Dedicated
Inputs
Clock Inputs
2 Dedicated
2
Peripheral Control
Bus
12
OE[7..0]
VCC
CLK[1..0]
CLK[3..2]
ENA[5..0]
CLRn[1..0]
VCC
Input Pin to Input
Core to Output
Register Delay
VCC
VCC
Register Delay
VCC
VCC
VCC
APEX 20K Programmable Logic Device Family Data Sheet
Chip-Wide
Chip-Wide
Chip-Wide Reset
Input Pin to
Reset
Reset
Core Delay
Note (1)
Output Enable
Output Register
Chip-Wide
Input Register
OE Register
D
ENA
D
ENA
D
ENA
CLRN
CLRN
CLRN
Q
Q
Q
Open-Drain
Slew-Rate
Output
Control
Output Register
t
CO
Delay
VCCIO
Optional
PCI Clamp
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