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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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W83C554F датащи(PDF) 21 Page - Winbond |
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W83C554F датащи(HTML) 21 Page - Winbond |
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21 / 156 page  W83C554F Pin Descriptions WINBOND ELECTRONICS CORP. AMERICA 19 Table 2-4 (continued). IDE Interface Bus Signals Pin Name Pin # Input/ Output Description DA[2:0] 88,90,89 Output IDE Drive Address for command block and control block of device (drive). DD[15:0] 98,101,103, 105,108, 110,112, 114,115, 113,111, 109,106, 104,102, 100 Input/ Output IDE Drive Data. 16-bit bi-directional bus. IDECHRDY/ DDMARDY#/ DSTROBE 95 Input Multi-function pin. In PIO and Multiword DMA modes: IDE I/O Channel Ready. When IDECHRDY is negated, the current cycle will be extended. This input is connected to the primary port, and can also be connected to the secondary port. In UltraDMA Read mode: DSTROBE. 554F latches the data from the device (drive) on the rising and falling edge of DSTROBE. In UltraDMA Write mode: DDMARDY#. 554F uses this signal, when negated by the device (drive), to pause the UltraDMA transaction. IDEIRQB 91 Input IDE IRQ B. Secondary port interrupt request. IDEIRQA 92 Input IDE IRQ A. Primary port interrupt request. |
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