Patent ID: 7533253
Filing Date: 2009-05-12
Classification: G06F

Abstract:
1. A boot code fetch method of a multi-chip system including a volatile memory chip, a nonvolatile memory chip that stores the boot code, and a host, comprising: transferring the boot code from the nonvolatile memory chip to the volatile memory chip before any processor, including the host, loads or executes the boot code using a DRAM boot controller included in the nonvolatile memory chip; before transferring the boot code from the nonvolatile memory chip to the volatile memory chip, setting a mode register in the volatile memory chip to control the volatile memory chip, wherein setting the mode register of the volatile chip is performed by the nonvolatile chip; and receiving the boot code by the host from the volatile memory chip, wherein the volatile memory chip, the nonvolatile memory chip, and the host are connected to a common system bus.