Chapter 2: MAX V Architecture
2–31
I/O Structure
The 5M1270Z and 5M2210Z devices support four I/O banks, as shown in Figure 2–23.
Each of these banks support all of the LVTTL, LVCMOS, LVDS, and RSDS standards
shown in Table 2–4. PCI compliant I/O is supported in Bank 3. Bank 3 supports the
PCI clamping diode on inputs and PCI drive compliance on outputs. You must use
Bank 3 for designs requiring PCI compliant I/O pins. The Quartus II software
automatically places I/O pins in this bank if assigned with the PCI I/O standard.
Figure 2–23. I/O Banks for 5M1270Z and 5M2210Z Devices (Note 1), (2)
I/O Bank 2
Also Supports
the 3.3-V PCI
I/O Standard
All I/O Banks Support
3.3-V LVTTL/LVCMOS,
2.5-V LVTTL/LVCMOS,
1.8-V LVTTL/LVCMOS,
1.5-V LVCMOS,
I/O Bank 1
I/O Bank 3
1.2-V LVCMOS (3),
LVDS (4),
RSDS(5)
I/O Bank 4
Notes to Figure 2–23:
(1) Figure 2–23 is a top view of the silicon die.
(2) Figure 2–23 is a graphical representation only. Refer to the pin list and the Quartus II software for exact pin locations.
(3) This I/O standard is not supported in Bank 1.
(4) Emulated LVDS output using a three resistor network (LVDS_E_3R).
(5) Emulated RSDS output using a three resistor network (RSDS_E_3R).
Each I/O bank has dedicated VCCIO pins that determine the voltage standard support
in that bank. A single device can support 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V interfaces;
each individual bank can support a different standard. Each I/O bank can support
multiple standards with the same VCCIO for input and output pins. For example, when
VCCIO is 3.3 V, Bank 3 can support LVTTL, LVCMOS, and 3.3-V PCI. VCCIO powers
both the input and output buffers in MAX V devices.
The JTAG pins for MAX V devices are dedicated pins that cannot be used as regular
I/O pins. The pins TMS, TDI, TDO, and TCKsupport all the I/O standards shown in
Table 2–4 on page 2–29 except for PCI and 1.2-V LVCMOS. These pins reside in Bank 1
for all MAX V devices and their I/O standard support is controlled by the VCCIO
setting for Bank 1.
December 2010 Altera Corporation
MAX V Device Handbook
ALTERA [ ALTERA CORPORATION ]
