LS-E2-L-BASE-PC-N Lattice, LS-E2-L-BASE-PC-N Datasheet - Page 10

• Manufacturer Part Number: LS-E2-L-BASE-PC-N
• Description: MCU, MPU & DSP Development Tools ispLEVER Base - LS ECP2 50E Std Dev Kit
• Manufacturer: Lattice

Specifications of LS-E2-L-BASE-PC-N

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
Table 23. 3.3V to V
The LatticeECP2 is divided into 10 banks of I/Os (see Table 24), and each of these banks has a separate and inde-
pendent V
and 5, which connect to PCI/PCI-X, require a fixed voltage, not all of the banks on this evaluation board are adjust-
able. The jumpers listed in Table 24 allow the user to select the voltage (V
Note that if the LatticeECP2 will be configured from the SPI Serial Flash, bank 8 must be set to 3.3V (because SPI
Serial Flash is 3.3V). Also, if the board is plugged into a PCI/PCI-X connector, bank 6 must be set to 3.3V (because
the PCI clock is routed to bank 6 on this board).
Table 24. Bank Voltage Selection
The following tables detail the various I/O standards supported by the LatticeECP2 sysIO™ structures. More infor-
mation can be found in Lattice technical note TN1102, LatticeECP2 sysIO Usage Guide, available on the Lattice
web site at www.latticesemi.com.
Table 25. Mixed Voltage I/O Support
For example, if V
thresholds will be correct, assuming the user has also selected the desired input level using ispLEVER
Output levels are tied directly to V
J29
V
1.2V
1.5V
1.8V
2.5V
3.3V
Location
CCIO
CC.
1.2V
Yes
Yes
Yes
Yes
Yes
Each bank supports voltages from 1.2V to 3.3V. However, because some banks, such as banks 4
1 to 2
J17, 18, 37, and 39 must have no more than one jumper installed.
CCIO
CCAUX
Position
is 3.3V, then signals from devices powered by 1.2V, 2.5V, or 3.3V can be input and the
1.5V
Bank
V
Yes
Input sysIO Standards
CCJ
0
1
2
3
4
5
6
7
8
Connects 3.3V to VCCAUX
CCIO.
1.8V
Yes
sysCONFIG
ispJTAG™
Function
2.5V
Yes
Yes
Yes
Yes
Yes
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
3.3V
Yes
Yes
Yes
Yes
Yes
10
Function
LatticeECP2 Standard Evaluation Board
Jumper
1.2V
J37
J18
J17
J39
Yes
—
—
—
—
—
—
CCIO
1.5V
Yes
Output sysIO Standards
) applied to the adjustable banks.
1 - 2 = 3.3V
5 - 6 = 1.2V
1 - 2 = 3.3V
5 - 6 = 1.2V
1 - 2 = 3.3V
5 - 6 = 1.2V
1 - 2 = 3.3V
5 - 6 = 1.2V
3 - 4 = ADJ
3 - 4 = ADJ
3 - 4 = ADJ
3 - 4 = ADJ
3.3V Only
3.3V Only
3.3V Only
3.3V Only
3.3V Only
3.3V Only
Settings
1.8V
Yes
2.5V
Yes
User’s Guide
Default
®
software.
X
3.3V
Yes