Power Manager II
Hercules Development Kit
The Power Manager II Hercules Development Kit User’s Guide is available for download along with
the latest USB drivers and design software at www.latticesemi.com/herculesdevkit.
In the following steps, the evaluation board will be powered and made ready to run the pre-loaded
demonstrations. Verify the jumpers J5 (VMON7) and J6 (VMON8) select the “12V_OR” option and
not the “cPCI_HS” option.
1. Connect the AC adapter from a wall outlet to the power socket. After a connection is made to the
12V wall adapter plug, the green PWR_3.3V interface LED (D14) will light up indicating the on-
board 3.3V regulator (U1) is operational. The Power Manager II will next illuminate three supply
status LEDs: 12V_HS, 1.2V_SEQ, and PWR_GOOD (D1, D2, and D7). The TDO (D12) and
data (D8 through D11) LEDs may also light up.
Run the Demonstrations
This step describes the functionality of the pre-configured Power Manager II Hercules demos:
voltage supply trimming, supply margining, voltage monitoring, fault monitoring and logging.
Operation of the pre-loaded demos is accomplished by setting the demo DIP switches and pressing
the mode switch (SW3). The following tables summarize the demo and switch settings pertaining to
each of the pre-loaded demos.
Demo
SW3
Up=1
Pressed=0
Demo DIP Switch Setting
Comment
Mode
VMON
7 6 5 4 3 2 1 0
Default
n/a
0 0 0 0 0 0 0 0 LCD self-test
1
1=CLT, 0=OLT
0 0 0 0 0 0 0 1 Trim 1.2V to <1% error; SW3 = trim mode;
VMON1/LCD = Measured supply voltage
2
1=CLT, 0=OLT
0 0 0 1 0 0 0 1 Margin 1.2V down 7.5%; SW3 = trim mode;
VMON1/LCD = Measured supply voltage
2a
1=CLT, 0 =OLT
0 0 1 0 0 0 0 1 Margin 1.2V up 7.5%; SW3 = trim mode;
VMON1/LCD = Measured supply voltage
3
n/a
0 0 0 0 1 0 1 1 12V_HS voltage
VMON11/LCD = Measured supply voltage
4
n/a
0 0 0 0 1 0 0 1 Fault monitoring of slide potentiometer voltage (Vpot);
VMON9/LCD = Measured Vpot voltage (0V to 3.3V)
4a
1=Display
0=Clear All
1 x x x x x x x LCD = Total count of faults logged;
Press SW3 to reset count to zero
Demo
SW3
Default=1
Pressed=0
Demo DIP Switch Setting
Comment
Mode
VID
7 6 5 4 3 2 1 0
5
1=Hold, 0=Update 0 1 1 1 v8 v4 v2 v1
Add VID (DIP 0-3) value to 1.2V supply voltage;
VID (v8, v4, v2, v1) is a binary value multiplied by 10mV;
For example: 0000b=0*10mV=0V, 0100b=4*10mV=40mV,
1000b=8·10mV=80mV; 1100b=12*10mV=120mV;
VMON1/LCD=Measured supply voltage
5a
1=Hold, 0=Update 0 1 1 0 v8 v4 v2 v1
Subtract VID (DIP 0-3) value to 1.2V supply voltage;
VID (v8, v4, v2, v1) is a binary value multiplied by 10mV;
VMON1/LCD=Measured supply voltage
5b
1=Hold, 0=Update 0 1 0 x x x x x Turn off 1.2V supply; VMON1=LCD
Notes:
1. The mode switch (SW3) is equal to a logic one (1) when not pressed. Pressing the mode switch (SW3) enters a logic zero (0).
2. The demo DIP switches (SW5) are equal to a logic ones (1) when up. Placing the switches down makes them zeros (0).
3. CLT means closed loop trimming mode (supply setpoint is trimmed to an accurate value). OLT means open loop trim to prede-
termined value (supply setpoint is a preset voltage and not trimmed). In other words, Demos 1 and 2 use either CLT or OLT trim
mode depending on the condition of the mode switch (SW3).
4. Pressing the PLD reset switch (SW4) resets the LatticeMico8 controller in the MachXO (U4), not the POWR1220AT8 (U3).
5. The position of Interface Select Switches (SW2) does not affect any of the testing in the QuickSTART guide.
