Data signal receiver and method of calibrating a data signal receiver

A data signal receiver, said data signal receiver configured to receive a multi-bit data signal and an associated data strobe signal, wherein transitions of said data strobe signal indicate sample points for said multi-bit data signal, the data signal receiver configured to perform a calibration process and comprising:

• a receiver configured to receive, on each bit of said multi-bit data signal, a sample of a predetermined data pattern;
• a timing calculator configured to determine, for each bit of said multi-bit data signal, a relative start timing value indicative of a start of said predetermined data pattern,
• said timing calculator configured to determine, for each bit of said multi-bit data signal, a relative end timing value indicative of an end of said predetermined data pattern, and
• said timing calculator configured to determine, for each bit of said multi-bit data signal, a mid-point timing value halfway between said relative start timing value and said relative end timing value;
• bit timing delay circuitry configured to apply a bit timing delay to each bit of said multi-bit data signal such that the mid-point timing values are aligned;
• and
• strobe timing delay circuitry configured apply a strobe timing delay to said associated data strobe signal to align said associated data strobe signal with the aligned mid-point timing values.

A data signal receiver, said data signal receiver configured to receive a multi-bit data signal and an associated data strobe signal, wherein transitions of said data strobe signal indicate sample points for said multi-bit data signal, the data signal receiver configured to perform a calibration process and comprising:

• means for receiving, on each bit of said multi-bit data signal, a sample of a predetermined data pattern;
• means for determining, for each bit of said multi-bit data signal, a relative start timing value indicative of a start of said predetermined data pattern;
• means for determining, for each bit of said multi-bit data signal, a relative end timing value indicative of an end of said predetermined data pattern;
• means for determining, for each bit of said multi-bit data signal, a mid-point timing value halfway between said relative start timing value and said relative end timing value;
• means for applying a bit timing delay to each bit of said multi-bit data signal such that the mid-point timing values are aligned;
• and
• means for applying a strobe timing delay to said associated data strobe signal to align said associated data strobe signal with the aligned mid-point timing values.