IBM DTCA-24090 Hard Drive Specifications - Page 47

Interface Logic Signal Levels

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DSTROBE (Ultra DMA) This signal is used only for Ultra D M A data transfers between host and drive. DSTROBE is the data int strobe signal from the device for an Ultra D M A data in transfer. Both the rising and falling edge of DSTROBE latch the data from DD(15:0) into the host. The device may stop toggling DSTROBE to pause an Ultra DMA data in transfer. 6.3 Interface Logic Signal Levels The interface logic signal have the following electrical specifications: Inputs : Input High Voltage Input Low Voltage 2.0 V min./ Vcc+0.7 V max. 0.5 V min./ 0.8 V max. Outputs : Output High Voltage Output Low Voltage 2.4 V min. 0.5 V max. Current : Driver Sink Current Driver Source Current 24 mA min. 400 uA min. Electrical Interface Specifications 39

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DSTROBE (Ultra DMA)
This signal is used only for Ultra DMA data transfers between host and drive.
DSTROBE is the data int strobe signal from the device for an Ultra DMA data in transfer.
Both the rising and falling edge of DSTROBE latch the data from DD(15:0) into the host.
The device may stop toggling DSTROBE to pause an Ultra DMA data in transfer.
6.3
Interface Logic Signal Levels
The interface logic signal have the following electrical specifications:
Inputs
:
Input High Voltage
2.0 V min./ Vcc+0.7 V max.
Input Low Voltage
0.5 V min./ 0.8 V max.
Outputs :
Output High Voltage
2.4 V min.
Output Low Voltage
0.5 V max.
Current :
Driver Sink Current
24 mA min.
Driver Source Current
400 uA min.
Electrical Interface Specifications
39