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WED7P1G0ATA7003I25 Datasheet(PDF) 3 Page - White Electronic Designs Corporation |
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WED7P1G0ATA7003I25 Datasheet(HTML) 3 Page - White Electronic Designs Corporation |
3 / 15 page 3 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WED7PxxxATA70xxI25 July 2005 Rev. 1 White Electronic Designs Corp. reserves the right to change products or specifications without notice. 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/Word/Odd-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 Byte access (8bit) L H L L L H High-Z even byte 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 Byte access (8bit) L H L L H L Don’t care even byte 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. |
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