ATAPI InterfaceChapter 5
Introduction
The STT8000A provides an ATA Packet Interface (ATAPI) controller for communications between the host computer and the drive. The drive supports the QIC-157 standard interface.
Note: Refer to the QIC-157 Standard for detailed information about the this interface.
This chapter clarifies the use of several ATA-2 signals and ATAPI commands that are either vague or optional in the QIC-157 specification.
ATA-2 Interface
The information about the ATA-2 interface is presented in the following topics: ATA- 2 Signals, ATA Registers, and ATA Commands.
ATA-2 Signals
Only the DASP and PDIAG- signals are described in the following paragraphs.
DASP-
This signal is used during power-up handshake sequences for master/slave identification per ATA-2 specifications.
Because the device has its own front-panel activity LED, this signal is not driven by this device (to indicate activity) after power-up is complete.
PDIAG-
This signal is used during power-up handshake sequences for master/slave identification per ATA-2 specifications.
STT8000A Product Manual | Page 31 |
