TRS Star CompactFlash Card Industrial-Grade Datasheet

Industrial-Grade CompactFlash CardTRS Star SpecificationFor more information visit us under:http://www.trs-star.com3.4.3 Card Configuration and Status Register (Addr. 202h in AttributeMemory)The Card Configuration and Status Register contain information about the Card’s condition.Table 3.4.3. Card Configuration and Status Register OrganizationOperation D7 D6 D5 D4 D3 D2 D1 D0Read Changed SigChg IOis8 0 0 PwrDwn Int 0Write 0 SigChg IOis8 0 0 PwrDwn 0 0ChangedSigChgIOis8PwrDwnIntIndicates that one or both of the Pin Replacement register CRdy, or CWProt bits areset to one (1). When the Changed bit is set, -STSCHG Pin 46 is held low if the SigChgbit is a One (1) and the CompactFlash Memory Card is configured for the I/Ointerface.This bit is set and reset by the host to enable and disable a state-change “signal” fromthe Status Register, the Changed bit control pin 46 the Changed Status signal. If nostate change signal is desired, this bit should be set to zero (0) and pin 46 (-STSCHG)signal will be held high while the CompactFlash Memory Card is configured for I/O.The host sets this bit to a one (1) if the CompactFlash Memory Card is to beconfigured in an 8-bit I/O mode. The CompactFlash Card is always configured for both8- and 16-bit I/O, so this bit is ignored.This bit indicates whether the host requests the CompactFlash Memory Card to be inthe power saving or active mode. When the bit is one (1), the CompactFlash Cardenters a power down mode. When zero (0), the host is requesting the CompactFlashCard to enter the active mode. The PC Card Rdy/-Bsy value becomes BUSY whenthis bit is changed. Rdy/-Bsy will not become Ready until the power state requestedhas been entered. The CompactFlash Card automatically powers down when it is idleand powers back up when it receives a command.This bit represents the internal state of the interrupt request. This value is availablewhether or not I/O interface has been configured. This signal remains true until thecondition that caused the interrupt request has been serviced. If interrupts aredisabled by the -IEN bit in the Device Control Register, this bit is a zero (0).TRS* Tele-Radio-Space GmbH, reserves the right Page 37 from 113 Industrial-Grade CompactFlash Cardto change products or specifications without notice. Rev. 1.4 Stand 06/2006