| 摘要 |
A circuit and method serves as a slave interface to support both register read/write and monitor detection operations by a graphics controller chip, or other display data source, with a plurality of display devices. The circuit supports differing monitor detection protocols including, for example, I<2>C protocol and non-DDC type protocols. The circuit may be set in two modes, a register mode and a bypass mode. The register mode is used to facilitate standard I<2>C protocol to a display device. Display detection bypass circuitry is used to selectively bypass the register based display detector interface by connecting input pins to any two of a plurality of I/O pins so that the system may be used for monitor detection of a plurality of different display devices, such as CRTs and LCDs to facilitate multiprotocol display detection.
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