LFXP2-17E-L-EV Lattice, LFXP2-17E-L-EV Datasheet - Page 4

• Manufacturer Part Number: LFXP2-17E-L-EV
• Description: MCU, MPU & DSP Development Tools LatticeXP2 EVAL BRD STD
• Manufacturer: Lattice

Specifications of LFXP2-17E-L-EV

• Processor To Be Evaluated: LatticeXP2-17 FPGA
• Interface Type: RS-232, USB
• Silicon Manufacturer: Lattice
• Core Architecture: FlexiFLASH
• Silicon Core Number: LFXP2-17E-4F484C
• Silicon Family Name: LatticeXP2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
Figure 1. LatticeXP2 Standard Evaluation Board
Power Supply
The LatticeXP2 Standard Evaluation Board features a single coaxial input connector to apply power. The coaxial
connector is located at the southwest side of the board. A 5V DC source must be applied to power the board.
The 5V input voltage is used to power the ispPAC-POWR607 Power Manager device (U1). The input voltage is reg-
ulated down with a zener diode and a transistor. The Power Manager uses this supply rail to boot and run a power
up sequence. While the LatticeXP2 does not require any specific order for the voltage rails to be applied, the Power
Manager can be used to try a wide variety of sequence options.
The Power Manager controls the enable inputs of three Bellnix BSV-m DC/DC converters. The Bellnix BSV-m is a
point-of-load power supply. Each point-of-load supply is placed physically near the DC load. In this case the DC
load of interest is the LatticeXP2 FPGA. There are three Bellnix converters on the LatticeXP2 Standard Evaluation
Board. One supplies the LatticeXP2 core voltage, which is 1.2V. Another supplies the VCCAUX, VCCIO1/2/3/4/5/7,
and all other 3.3V logic on the board. The third converter is adjustable from 1.1V to 2.5V and can be used to power
VCCIO6.
The ispPAC-POWR607 is pre-programmed to initialize the power system in a specific order. The order is arbitrary,
and is not a power-sequencing guideline for the LatticeXP2. The ispPAC-POWR607 starts by turning on the 1.2V
core voltage. It does not turn on any other supply on the board until the 1.2V supply reaches a programmed thresh-
ispPAC-POWR607
Connector
Footprint
SMA
Switch
DIP
SMA Connector
Footprint
Compact Flash
4
Oscillator
USB Programming
Connector
Evaluation Board User’s Guide
DAC
RS232 DB9
ADC
LatticeXP2 Standard
MachXO
LatticeXP2 FPGA
SRAM
RS232
PHY
Connector
Footprint
SMA