Chapter 2: MAX V Architecture
2–27
I/O Structure
Fast I/O Connection
A dedicated fast I/O connection from the adjacent LAB to the IOEs within an I/O
block provides faster output delays for clock-to-output and tPD propagation delays.
This connection exists for data output signals, not output enable signals or input
signals. Figure 2–20, Figure 2–21, and Figure 2–22 illustrate the fast I/O connection.
Figure 2–19. IOE Structure for MAX V Devices
Data_in Fast_out
Data_out OE
DEV_OE
Optional
PCI Clamp (1)
Programmable
Pull-Up (2)
V
V
CCIO
CCIO
I/O Pin
Optional Bus-Hold
Circuit
Drive Strength Control
Open-Drain Output
Slew Control
Optional Schmitt
Trigger Input
Programmable
Input Delay
Notes to Figure 2–19:
(1) Available only in I/O bank 3 of 5M1270Z and 5M2210Z devices.
(2) The programmable pull-up resistor is active during power-up, in-system programming (ISP), and if the device is unprogrammed.
December 2010 Altera Corporation
MAX V Device Handbook
ALTERA [ ALTERA CORPORATION ]
