TRS Star CompactFlash Card Industrial-Grade Datasheet

Industrial-Grade CompactFlash CardTRS Star SpecificationFor more information visit us under:http://www.trs-star.com3.4.1 Attribute Memory FunktionAttribute memory is a space where CompactFlash Memory Card identification and configurationinformation is stored, and is limited to 8-bit wide accesses only at even addresses. The cardconfiguration registers are also located here.For the Attribute Memory Read function, signals -REG and -OE must be active and -WE inactiveduring the cycle. As in the Main Memory Read functions, the signals -CE1 and -CE2 control the evenbyteand odd-byte address, but only the even-byte data is valid during the Attribute Memory access.Refer to Table 3.4.1 for signal states and bus validity for the Attribute Memory function.Table 3.4.1 Attribute Memory FunctionFunction Mode -REG -CE2 -CE1 A9 A0 -OE -WE D15-8 D7-0Standby Mode X H L X X X X High Z High ZRead ByteAccess CIS ROM (8 bits)L H L L L L H High Z Even ByteWrite ByteAccess CIS (8 bits)L H L L L H L Not care Even Byte{Invalid}Read ByteAccess ConfigurationL H L H L L H High Z Even Byte(8 bits)Write ByteAccess ConfigurationL H L H L H L Not care Even Byte(8 bits)Read WordAccess CIS (16 bits)L L L L X L H Not Valid Even ByteWrite WordAccess CIS (16 bits)L L L L X H L Not care Even Byte{Invalid}Read WordAccess ConfigurationL L L H X L H Not Valid Even Byte(16 bits)Write WordAccess Configuration(16 bits)L L L H X H L Not care Even ByteNOTE:The -CE signal or both the -OE signal and the -WE signal must be de-asserted betweenconsecutive cycle operations.TRS* Tele-Radio-Space GmbH, reserves the right Page 35 from 113 Industrial-Grade CompactFlash Cardto change products or specifications without notice. Rev. 1.4 Stand 06/2006