| 摘要 |
An indirect interface of the present invention is for use between a processing device and a display device, the indirect interface using fewer pins by following a set of predetermined rules. Address and data signals are multiplexed onto an address/data bus of the indirect interface so that a single set of pins can be used as both address line/pins and data line/pins. In one preferred embodiment, a processor interface means transfers signals between the indirect interface system and the external processing device and a display interface means transfers signals between the indirect interface system and the external display device. In one preferred embodiment, the signals may be transferred between the indirect interface system and the external processing device using a command cycle followed by at least one data cycle. In one preferred embodiment, command/data determination signals used to distinguish between the command cycle and the data cycle may be transferred over a predetermined a command/data determination line/pin.
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