Command paths, apparatuses and methods for providing a command to a data block

摘要

Command paths, apparatuses, and methods for providing a command to a data block are described. In an example command path, a command receiver is configured to receive a command and a command buffer is coupled to the command receiver and configured to receive the command and provide a buffered command. A command block is coupled to the command buffer to receive the buffered command. The command block is configured to provide the buffered command responsive to a clock signal and is further configured to add a delay before to the buffered command, the delay based at least in part on a shift count. A command tree is coupled to the command block to receive the buffered command and configured to distribute the buffered command to a data block.

主权项

1. A command path, comprising:
a command receiver configured to receive a command; a command buffer coupled to the command receiver and configured to receive the command and provide a buffered command; a command block coupled to the command buffer to receive the buffered command, the command block configured to provide the buffered command responsive to a clock signal and further configured to add a delay to the buffered command, the delay based at least in part on a shift count; a timing calibration block coupled to the command block and configured to provide the shift count, the timing calibration block including a model delay path having a model path delay based at least in part on a command path delay and a data circuit path delay, wherein the shift count based at least in part on the modeled path delay; and a command tree coupled to the command block to receive the buffered command and configured to distribute the buffered command to a data block.