11
ATF15xx-DK3-U Development/Programmer Kit [USER GUIDE]
Atmel-8961A-CPLD-ATF15xx-DK3-U-Development-Kit-UserGuide_072015
V
CC
IO and V
CC
INT Voltage Selection Jumpers and LEDs
The V
CC
IO and V
CC
INT Voltage Selection Jumpers, labeled VCCIO Selector and VCCINT Selector
respectively on ATF15xx-DK3 Development/Programming Kit, allow the selection of the I/O supply
voltage level (V
CC
IO) and core supply voltage level (V
CC
INT) that are used for the target CPLD on the
kit. Once these jumpers are set correctly, the LEDs (labeled VCCINT LED and VCCIO LED) will turn
on; however, at lower supply voltage levels (i.e. 2.5V or lower), the LEDs might be very dim.
For ATF15xxAS/ASL (5.0V) CPLDs, both the VCCIO Selector and VCCINT Selector jumpers
must be
set to 5.0V.
For ATF15xxASV/ASVL (3.3V) CPLDs, both the VCCIO Selector and VCCINT Selector Jumpers
must be
set to 3.3V only.
I
CC
IO and I
CC
INT Jumpers
The I
CC
IO and I
CC
INT jumpers can be removed and used as I
CC
measurement points. When the
jumpers are removed, current meters can be connected to the posts to measure the current
consumption of the target CPLD. When users are not using these jumpers to measure the current,
these jumpers
must be
set in order for the kit and CPLD to operate.
Voltage Regulators
Two voltage regulators, labeled VR1 and VR2, are used to independently generate and regulate the
V
CC
INT and V
CC
IO voltages from the 9VDC power supply. For details, please see the ATF15xx-DK3 kit
schematic,
Figure 11
.
Power Supply Switch and Power LED
The Power Supply Switch, labeled POWER SWITCH, can be switched to the
on
or
off
position, which
is used to turn on or off the power of the ATF15xx-DK3 board respectively. It allows the 9VDC voltage
at the Power Supply Jack to pass to the voltage regulators when it is in the
on
position. When the
Power Supply Switch is turned
on
, the Power LED (labeled POWER LED) will light up to indicate that
the ATF15xx-DK3 Kit is supplied with power.
Power Supply Jack and Power Supply Header
The ATF15xx-DK3 board contains two different types of power supply connectors labeled JPower and
JP Power. Either one of these power supply connectors can be used to connect a 9VDC power source
to the kit. The first power connector labeled JPower, is a barrel power jack with a 2.1mm diameter post,
and it mates to a 2.1mm (inner diameter) x 5.5mm (outer diameter) female plug. The second power
supply header labeled JP Power, is a 4-pin male 0.100" header with 0.025" square posts. The
availability of these two types of power connectors allows the users to choose the type of power supply
equipment to use for ATF15xx-DK3 Development/Programmer Kit.
The power of the CPLD Development/Programmer Kit
must be
turned OFF when
changing the position of the V
CC
IO or V
CC
INT Voltage Selection Jumper (VCCIO
Selector or VCCINT Selector).
Only one of these two power supply connectors should be powered with a 9VDC
source but not both at the same time.
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