SYSTEM AND METHOD FOR PROVIDING A COMMUNICATION CHANNEL TO A POWER MANAGEMENT INTEGRATED CIRCUIT IN A PCD

摘要

Communication channels among a connector port module, a debug interface module, and a power communication interface module may be established. Each of these elements may be part of a system-on-chip. The power communication interface module may be coupled to an integrated circuit, such as a power management integrated circuit. The connector port module may be coupled to a connector, in which the connector may facilitate connections between the PCD and one or more external devices, such as a testing/debugging device. The connector may comprise an SD connector. The connector may be monitored for a device present signal. If a device present signal has been detected, then it may be determined if a valid access code has been received for allowing access to communications within the PCD. If a valid access code is received, then a command may be issued to relinquish control of the integrated circuit from a master processor.

主权项

1. A method for providing a communication channel to a power management integrated circuit of a portable computing device (“PCD”), the method comprising:
establishing communication channels among a connector port module, a debug interface module, and a power communication interface module which are part of a system on a chip, the power communication interface module being coupled to an integrated circuit; establishing communications between the connector port module and a connector; determining if a device present signal has been detected at the connector; if a device present signal has been detected, then determining if a valid access code has been received; and if a valid access code has been received, then issuing a command to relinquish control of the integrated circuit.