Nonvolatile memory device and storage device containing nonvolatile memory device

A storage device comprising:

• a storage controller configured to output training data, a first logic unit number instructing buffer chip broadcasting
• a buffer chip comprising a first write training module configured to:
• generate first pattern data,
• receive the training data through a first channel based on the first logic unit number,
• compare the training data with the first pattern data, and
• generate a first pass/fail value for the training data;
• and
• a second write training module configured to:
• generate second pattern data,
• receive the training data through the first channel based on the first logic unit number, compare the training data with the second pattern data, and
• generate a second pass/fail value for the training data.

A storage device comprising:

• a storage controller including a memory including:
• a first logic unit number instructing buffer chip broadcasting,
• a second logic unit number instructing a plurality of memory dies included in a group die,
• a pattern generator configured to generate pattern data, and
• a delay circuit configured to delay the pattern data according to a delay value and outputting training data;
• a buffer chip configured to:
• receive an address corresponding to the first logic unit number, an address corresponding to the second logic unit number, and the training data at substantially the same timing from the storage controller through a first channel,
• generate first pattern data, and delay the first pattern data according to a delay value, and
• output first training data;
• and
• a nonvolatile memory configured to:
• receive an address corresponding to the second logic unit number and the first training data from the buffer chip through a second channel at substantially the same timing, and
• generate a pass/fail value based on the first training data.