Power module

The power module controls two power supplies: the “platform” socket power supply and the “dut” socket power supply. Each power supply can be turned on and off.

A positive input pulse on the “tearing” input of the board (SMA connector on the left side) will automatically power-off both power supplies.

Python API example

# Turn DUT on
scaffold.power.dut = 1 # True is also valid
# Check current power supply status
# (it may be off due to external tearing)
if scaffold.power.dut: # Will return 0 or 1
    print('DUT is still ON')
# Turn DUT off
scaffold.power.dut = 0 # False is also valid

The following example controls both power supplies at the same time.

# Turn on all power supplies
scaffold.power.all = 0b11
# Check current power status of both power supplies
if (scaffold.power.all == 0b11):
    print('Both power supplies are ON')
# Turn off all power supplies
scaffold.power.all = 0b00

It is also possible to output the power enable signal to one of the IOs, for triggering or monitoring:

scaffold.d0 << scaffold.power.dut_trigger

For more API documentation, see scaffold.Power

Internal registers

control

0x0600

control register

7	6	5	4	3	2	1	0
reserved						platform	dut

dut

Write 1 to enable the DUT socket power supply. Write 0 to disable. This bit is cleared when the tearing input is high.

platform

Write 1 to enable the platform socket power supply. Write 0 to disable. This bit is cleared when the tearing input is high.