| 摘要 |
PURPOSE:To transfer data to a device connected to an extension bus at a high speed by producing the data transfer clock synchronously with the data latch clock sent from a 1st bus system expanding device when the data are transferred from a 2nd bus system expanding device. CONSTITUTION:The generation timing of the data transfer clock DTC2 sent to an extension bus from an expanding device BE2 is controlled to be synchronous with the data latch clock DLC0 and DLC1. Thus the device BE2 transfers the fetched data DATA2 to an extension bus by the clock DTC2 produced by the BE2 itself every time the data is fetched from an expanding device BE1. In such a way of control, the data transfer speed is extremely increased to an expanded system. |
