LS-X2280-BASE-PC-N Lattice, LS-X2280-BASE-PC-N Datasheet - Page 10

• Manufacturer Part Number: LS-X2280-BASE-PC-N
• Description: MCU, MPU & DSP Development Tools ispLEVER Base MachXO -2280 Std Dev Kit
• Manufacturer: Lattice

Specifications of LS-X2280-BASE-PC-N

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

Lattice Semiconductor
LED Displays
On the south edge of the board is a set of eight green 0603 form factor LEDs. These LEDs are connected to I/O
pins dedicated to driving the LEDs. Table 7 shows which MachXO I/O controls each LED. The LEDs illuminate
when the corresponding I/O is driven to V
Table 7. LED Pin Assignments
Switches
The evaluation board includes an eight-bit input toggle switch at the south edge of the board. The MachXO I/O
location for each bit in the switch is indicated on the PCB silkscreen. When in the up position, the switch is pulled to
3.3V via a 10K resistor. When in the down position, the switch is tied to ground.
Table 8. Switch Assignments
Oscillator and Clock Inputs
The MachXO Standard Evaluation Board provides the ability to supply selectable reference frequencies to the
MachXO device. The board provides a unique clock source distribution method. A Lattice ispClock5610 is included
on the board to provide a number of different clock frequencies to the MachXO device.
The ispClock5610 receives a reference clock from one of two sources on the board. The primary clock source for
the ispClock5610 is the on-board DIP oscillator. In the southwest corner of the board is XU1. This is a socket for
installing 300mil wide 3.3V DIP oscillators. Figure 7 shows how each type of oscillator can be placed in the DIP
socket.
OL
.
Switch
LED
D0
D1
D2
D3
D4
D5
D6
D7
1
2
3
4
5
6
7
8
10
MachXO I/O
MachXO I/O
R11
R12
P11
P12
R13
R14
T13
T12
R4
R5
P5
P6
R6
T3
T4
T5
MachXO Standard Evaluation Board
Revisions 001 & 002 User’s Guide