Independent head, dual reader control logic

A system comprising:

• a preamplifier configured to be connected to a plurality of magnetic read/write heads, wherein each of the magnetic read/write heads includes a read sensor to read data from a disc and a write element to write data to the disc;
• the preamplifier further configured to:
• activate, based on a control signal received via an input line, reading of data from a first head substantially simultaneously with reading of data from a second head;
• select the first head from the plurality of magnetic read/write heads based on one or more primary head selection bits stored in a first set of registers of the preamplifier;
• select the second head from the plurality of magnetic read/write heads based on one or more secondary head selection bits stored in a second set of registers of the preamplifier;
• provide data from the first head to a first output of the preamplifier;
• and
• provide data from the second head to a second output of the preamplifier.

A method comprising:

• receiving, by a preamplifier, a control signal, the preamplifier configured to be connected to a plurality of magnetic read/write heads, wherein each of the magnetic read/write heads includes a read sensor to read data from a disc and a write element to write data to the disc;
• activating, based on the control signal, reading of data from a first head substantially simultaneously with reading of data from a second head;
• selecting the first head from the plurality of magnetic read/write heads based on one or more primary head selection bits stored in a first set of registers of the preamplifier;
• selecting the second head from the plurality of magnetic read/write heads based on one or more secondary head selection bits stored in a second set of registers of the preamplifier;
• receiving, at a first signal processing module of the preamplifier, a first read signal from the first head including the data from the first head;
• applying, by the first signal processing module, a first signal processing to the first read signal, the first signal processing including at least one of bias, gain and bandwidth processing;
• receiving, at a second signal processing module of the preamplifier, a second read signal from the second head including the data from the second head;
• applying, by the second signal processing module, a second signal processing to the second read signal, the second signal processing including at least one of bias, gain and bandwidth processing;
• providing the processed first read signal to a first output of the preamplifier;
• and
• providing the processed second read signal to a second output of the preamplifier.