Patent ID: 7970433

Claim:
A cellular handset, comprising: a cellular base band modem, comprising: a UART interface; and an SD host interface; a NAND flash memory; a NAND controller coupled with said NAND flash memory; and a convergence controller coupled with said cellular base band modem and said NAND controller, comprising: a UART port for transferring data to and from said cellular base band modem via said UART interface; a first SD port for transferring data to and from said cellular base band modem via said SD host interface; a second SD port for transferring data to and from said NAND flash memory via said NAND controller; a third SD port for transferring data to and from a controller of an external host device; a first mailbox into which said base band modem writes messages and from which the host device controller reads messages; and a second mailbox into which the host device controller writes messages and from which said cellular base band modem reads messages, wherein said convergence controller enables the host device controller to access said NAND flash memory when said cellular base band modem is in a sleep mode.