Datasheet

11.2.2 Card Configuration Status Register (Offset 02h)

The Card Configuration and Status Register contains information about the card condition.

00PwrDwn0-XEIOis8SigChg0Write

0IntPwrDwn0-XEIOis8SigChgChangedRead

D0D1D2D3D4D5D6D7Operation

Figure 42. Card Configuration Status Register (Offset 02h)

Changed: This bit indicates that one or both of the Pin Replacement register CRdy, or CWProt bits are

set to one (1). When the Changed bit is set, pin 46 (–STSCHG) is held low if the SigChg bit is a one (1)

and the card is configured for the I/O interface.

SigChg: This bit serves as a gate for pin 46 (–STSCHG). If the card is configured for the I/O interface

and this bit is zero (0), pin 46 (–STSCHG) is held high. If the card is configured for the I/O interface and

both the Changed and SigChg bits are set to one (1), the card asserts pin 46 (–STSCHG) upon changes

in the Changed bit.

IOis8: This bit is set to one (1) when the card is configured in 8-bit I/O mode as the host provides I/O

cycles only with an 8-bit (D7–D0) data path.

-XE: Extended power enabled. When the host sets this bit to zero (0), the card enables extended power

operations. When the host sets this field to one (1), the card disables extended power operations. When

this filed is read, the bit indicates the card's acceptance of extended power operations. If it is read as

one (1), extended power operations are being disabled. If it is read as zero (0), the card can perform ex-

tended power operations. This bit is read as zero (0) after power-up and hardware reset. Identify Device

information word 170 also has –XE bit for the same purpose. These –XE bits are always consistent.

Extended power operations are defined as a command that requires the extended power capability of the

host. For the device, extended power operations includes any read, write and seek commands. Identify

Device, Set Features (Enable Extended Power and Disable Extended Power), Request Sense and

Execute Device Diagnostics are not extended power operations, that is, these commands can be per-

formed regardless of the setting in –XE bit.

PwrDwn: This bit indicates whether the hosts requires the card to be in the power saving or active mode.

When the bit is one (1), the card enters power down mode, which is the same mode the card enters upon

a completion of SLEEP command. When the bit is zero (0), the card enters the active mode. The

PCMCIA Rdy/-Bsy signal becomes BUSY when this bit is changed. Rdy/-Bsy will not become READY

until the power sate requested has been entered. The device automatically powers down when it is idle

and powers back up when it receives a command. Duration of active mode to power down mode is vari-

able as determined by the Adaptive Battery Life Extender 3 (ABLE-3) technology.

Int: This bit represents the internal state of the interrupt request. This value is available whether or note

I/O interface has been configured. This signal remains true until the condition which caused the interrupt

request has been serviced. If interrupts are disabled byte –IEN bit in the Device Control Register, this bit

is zero (0).

Hard disk drive specification for DSCM-11000/-10512/-10340