Datasheet

PedalSync™

Tru-Foot

LFO chip MV-55(B)

Datasheet - p.7

PedalSync_MV-55_MV-55B_Tru-Foot_LFO_Datasheet.doc DRAFT v9.1

When a program is read from memory the Clock or Pot/Tap mode is recalled. If, for example,

the program uses Clock mode and the pin is already grounded, the user will need to toggle the

switch twice to enter Pot/Tap mode.

The program default is Pot, allowing stand-alone effects that do not need an external clock

signal. If the design does not use an incoming clock, the Clock/Pot pin should remain

grounded.

In Clock mode, the LFO starts automatically and runs even when no clock is coming in. The

tempo stored and recalled from memory will be the tempo that was happening at the time it

was stored.

In Clock mode, the waveform resets upon each MIDI Start command.

Clock Mode LED

(pin 26)

The Clock Mode LED will be lit when then LFO is controlled by the incoming clock. When the

LFO is controlled by the Speed knob and/or Tap button the LED is not lit.

When in Clock Mode, the tempo is controlled by an incoming PedalSync or MIDI Clock at pin

21. If no Clock is present, the LFO runs at the last incoming value, which is also stored when

a program is written.

Bypass button

(pin 7)

Pressing the Bypass button sends both waveform outputs to the maximum voltage as well as

turning off pin 18. Pressing again re-starts the waveform outputs.

The program default for the Bypass Button is ON. If using the Relay Bypass chip (MV-57), this

corresponds to having the device engaged.

Bypass Output or LED

(pin 18)

The Bypass LED is illuminated when the LFO is being sent. Pin 18 can alternatively be used

to control the PedalSync Relay Bypass chip (MV-57). Pin 18 can also be connected via an

inverter to the Clock Inhibit pin of a 4017 Decade Counter chip to synchronize the start and

stop of a sequencer circuit.

If more than one circuit is connected, be sure to buffer the output.