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THNCF032MBA Datasheet(PDF) 10 Page - Toshiba Semiconductor |
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THNCF032MBA Datasheet(HTML) 10 Page - Toshiba Semiconductor |
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10 / 48 page ![]() THNCFxxxMBA/BAI Series 2002-10-20 10/48 Preliminary Access Specifications 1. Attribute access specifications When CIS-ROM region or Configuration register region is accessed, read and write operations are executed under the condition of –REG=”L” as follows. That region can be accessed by Byte/World/Old-byte modes, which are defined by PC card standard specifications. • Attribute Read Access Mode Mode −REG −CE2 −CE1 A0 −OE −WE D8 to D15 D0 to D7 Standby mode X H H X X X High-Z High-Z L H L L L H High-Z even byte Byte access (8bit) L H L H L H High-Z invalid Word access (16bit) L L L X L H invalid even byte Odd byte access (8bit) L L H X L H invalid High-Z Note: X → L or H • Attribute Write Access Mode Mode −REG −CE2 −CE1 A0 −OE −WE D8 to D15 D0 to D7 Standby mode X H H X X X Don’t care Don’t care L H L L H L Don’t care even byte Byte access (8bit) L H L H H L Don’t care Don’t care Word access (16bit) L L L X H L Don’t care even byte Odd byte access (8bit) L L H X H L Don’t care Don’t care Note: X → L or H Write CIS-ROM region is invalid. • Attribute Write Timing Example −CE2/−CE1 −WE −OE D0~D15 −REG A0~A10 Dout Din Read cycle Write cycle |
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