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THNCF032MBA Datasheet(PDF) 13 Page - Toshiba Semiconductor |
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THNCF032MBA Datasheet(HTML) 13 Page - Toshiba Semiconductor |
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13 / 48 page  THNCFxxxMBA/BAI Series 2002-10-20 13/48 Preliminary 3. True IDE Mode The card can be configured in a True IDE This card is configured in this mode only when the-OE input signal is asserted GND by the host. In this True IDE mode Attribute Registers are not accessible from the host. Only I/O operation to the task file and data register is allowed. If this card is configured during power on sequence, data register is accessed in word (16-bit). The card permits 8-bit accessed if the user issues a Set Feature Command to put the device in 8-bit mode. • True IDE Mode Read I/O Function Mode −CE2 −CE1 A0~A2 −IORD −IOWR D8 to D15 D0 to D7 Invalid mode L L X X X High-Z High-Z Standby mode H H X X X High-Z High-Z Data register access H L 0 L H odd byte even byte Alternate status access L H 6H L H High-Z Status out Other task file access H L 1~7H L H High-Z Data Note: X → L or H • True IDE Mode Write I/O Function Mode −CE2 −CE1 A0~A2 −IORD −IOWR D8 to D15 D0 to D7 Invalid mode L L X X X Don’t care Don’t care Standby mode H H X X X Don’t care even byte Data register access H L 0 H L odd byte Don’t care Control register access L H 6H H L Don’t care Control in Other task file access H L 1~7H H L odd byte Data Note: X → L or H • True IDE Mode I/O Access Timing Example −IORD −IOIS16 −IOWR D0~D15 −CE A0~A2 Dout Din Read cycle Write cycle |
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