Kontron MOPSlcdGX1, Руководство по эксплуатации продукта

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MOPSlcdGX1 Product Manual chipDISK-IDE Interface
Kontron Embedded Modules Revision 1.3 29
14.3.3 D[0:15]
Input / output
16-bit bi-directional data bus between the host and the drive. The lower eight bits,
D0:D7, are used for register and error-correction code (ECC) access. All 16 bits are used
for data transfers.
14.3.4 IOW#
Input low active
Write strobe, the rising edge of which clocks data from the host data bus, D0:D15, into a
register of the
chip DISK.
14.3.5 IOR#
Input low active
Read strobe, which when low enables data from a register of the chip DISK onto the host
data bus, D0:D15.
14.3.6 IRQ
Output tri state
Interrupt to the host system.
The interrupt is enabled only when:
•
chip DISK is selected
•
Host activates the —IEN bit as active high
•
Drive is not selected
This output is in a high impedance state regardless of the state of the IRQ bit. The
interrupt is set when the IRQ bit is set by the
chip DISK. IRQ is reset to zero by a host
read of the status register or a write to the command register.
14.3.7 IOCS16#
Output tri state
Indication to the host system that the 16 bit data register has been addressed and that the
chip DISK is prepared to send or receive a 16-bit data word.
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