Simplifying the Management of General Purpose Input Output in Mobile Systems
General Purpose Input Output (GPIO) signals are prevalental most everywhere processors are connected together. They have traditionally provided a basic though useful ability to send control information from one integrated circuit to another; in the evolution of recent mobile sytems, an increasing number of GPIOs are used for side-band and other signaling between host processor and peripherals. As the use of GPIOs increased, the number of connection pins on the components increased, affecting the complexity of the system and adding to system cost.
Because there was no available solution addressing I/O reduction without involving software drivers and related issues, the MIPI Board of Directors has chartered the Reduced Input Output Working Group (RIO WG).
The group has the following goals:
All MIPI Members at the Contributor level and above are welcome to participate in the group. Log on to the MIPI members web site, and subscribe to the RIO WG forum:
If you do not already have a user account, one may be requested through the link provided on the log-in page.
The RIO WG will meet by teleconference as well as face-to-face on an occasional basis, in cluding the MIPI-wide meetings. We hope to see you there!
Lalan Mishra, Qualcomm Technologies, Inc.
Satwant Singh, Lattice Semiconductor