Retrieving status information from a remote device and corresponding host system

摘要

Retrieval of status information from a remote device performed on a host system is provided, wherein the remote device is connected to the host system via a bus system comprising at least two signal lines terminated with resistors on the host system side and on the remote device side. The retrieval method includes: activating a sensing phase; sensing the at least two terminated signal lines during the sensing phase; and determining operating state of the remote device based on the sensing result; wherein at least a first operating state representing a connected and powered remote device is detectable.

主权项

1. A method comprising:
retrieving, by a host system, status information from a remote device, wherein said remote device is connected to said host system via a bus system comprising multiple signal lines, at least two signal lines of the multiple signal lines each terminating with a termination resistor on the host system side, and another termination resistor on the remote device side, at least one signal line of the at least two signal lines being a clock line or a data line of the bus system, the retrieving comprising:
activating a sensing phase of the bus system, wherein during the sensing phase, the at least two signal lines are operated as sensing lines;sensing said at least two signal lines during said sensing phase; anddetermining operating state of said remote device based on said sensing result; wherein at least a first operating state representing a connected and powered remote device is detectable based on the sensing result.