Maxtor 10K III manual Pxm, Isn, Iwn, Asdp, Uscio, Sae

					SCSI Description
(KGNF	&GHCWNV			&GUETKRVKQP
		When SSSIE (Byte 3, bit 7) = 1, this field determines the disk drive’s SCSI
Software		ID. When changing SCSI ID via the MODE SELECT command, the SCSI ID
Selectable	0	changes after the next reset or power cycle. If at initial power on the SSSIE
SCSI ID		bit is set to 1 (the bit’s previous setting was saved to disk) the Software
		Selectable SCSI ID field’s value determines the disk drive’s SCSI ID.
Reselection		The value of this field specifies the number of reselection attempts the drive
Retries	7	will make to the initiator. A value of 0 indicates an infinite number of rese-
		lection attempts.
ERSS	0	Enable Rotational Position Locking (RPL) Sector Synchronization.
Stagger	0	WhenD[￿VJG￿theFTKXGvalue￿	of this field =1, the Stagger Spin Delay field (Bytes0QV6￿WUGF& 7)￿
Spin		is in effect. The disk drive operates as if its Spin Delay jumper was installed.
Auto Master		When this field = 0, this disk drive does not act as the master in a storage
	0	array configuration (refer to the Hard Disk Geometry page). When this field
Enable
		= 1, this disk drive becomes the master.
Force 8	0	When this field = 0, 16-bit wide data0QVtransfer￿WUGFWUGFresponses￿D[￿VJare￿FTKXGallowed.￿
		When this field = 1, negotiations are limited to 8-bit responses.
DFCP	0	Delay Following Command Phase.			￿D[￿VJG￿FTKXG￿
		Preserve Synchronous and Wide Mode. If set = 1, this bit causes the disk
PXM	0	drive to preserve the most recent wide and synchronous states for all initi-
		ators across power on resets, bus reset, and bus device reset messages.
		Initiate Synchronous Negotiation. When this field is set = 1, the disk drive
		initiates a synchronous transfer negotiation with the initiator. This is done
ISN	0	on the first selection with ATTENTION following a power on reset, bus re-
		0QV￿WUGF￿D[￿VJG￿FTKXG￿
		set, or bus device reset. The negotiation is done for each initiator. Note that
		if both ISN and IWN (Byte 5, bit 0) are set =1, the wide data transfer ne-
		gotiation takes place first.
		Initiate Wide Negotiation. When this field is set = 1, the disk drive initiates
		a wide data transfer negotiation with the initiator. This is done on the first
		selection with ATTENTION following a power on reset, bus reset, or bus de-
		vice reset. The negotiation is done for each initiator. Note that if the disk
IWN	0	drive is not capable of actually transferring data on a wide bus, the firmware
		will only negotiate for an 8-bit bus. If both ISN (Byte 5, bit 1) and IWN are
		set =1, the wide data transfer negotiation takes place first. A wide data
		transfer negotiation causes the disk drive to reset any synchronous agree-
		ment to asynchronous mode.
		The Stagger Spin Delay is a value in 100 millisecond units that is used to
		determine the length of the period of time delay before starting the disk
		drive’s motor if the Stagger Spin feature is used. The actual amount of the
		delay is determined using the following formula:
Stagger	28h	Spin Up Delay = (SCSI ID x Stagger Spin Delay).
Spin Delay
		Refer to the description of Delay Spin (Byte 3, bit 4).
		Note that for the value in Stagger Spin Delay field to have effect, the Spin
		Delay hardware jumper must be installed (Chapter 3).
ASDP	0	Always Save Data Pointers. If set = 1, the drive will always send an SDP
		message before sending a DISCONNECT message.
EnableQuiet	0	Enable Quiet Seek Mode. If set = 1, Quiet Seek mode is enabled.
USCIO	0	Use Same Cylinder Optimization in OPTWORK. When set = 1, helps multi-
		ple sequential streams.
SAE	0	Show All Errors. When this field = 1, errors usually hidden are shown.

Maxtor Atlas 10K III 5-69