Maxtor 10K III Operation Code 4Dh Reserved, Ppc, Parameter Pointer Allocation Length Control

.1)The￿5'05'Command￿%QOOCPFDescriptor￿&GUETKRVQTBlock for the￿$LOGNQEMSENSE command is shown in Table -45. Table -46contains field descriptions.

LOG SENSE Command Descriptor Block-Data Format

SCSI Description

￿￿￿￿￿￿

						Operation Code (4Dh)
						Reserved			PPC	SP
		2		PC				Page Code
	3 – 4						Reserved
		– 6					Parameter Pointer
	7 – 8						Allocation Length
		9					Control
	$$[VGKV			LOG SENSE Command Descriptor Block￿-Field Descriptions￿ ￿						￿
				The Parameter Pointer Control bit controls the type of parameters that can be
(KGNFPPC				requested from the drive. This bit&GUETKRVKQPmust be 0, indicating that all log parameters
				for the specified page (subject to the allocation length specified) are returned
				to the initiator.
	SP		Table	The Save Pages bit specifies whether the parameters are to be saved. This
				bit must be 0, indicating that no parameters are to be saved and are reset at
				-power45	-on or by a TARGET RESET.
				The Page Control field defines the type of parameter values to be selected.
	PC			The field must be 01b indicating that the current values are to be returned.
				Mode 11b (return default values) is not supported because all counters have
				a default value of 0.
Page Code				The value specified as the Page Code determines the page to be returned. Ta-
				ble 5-44contains a list of supported log pages and their page codes.
Parameter Pointer				This field is related to the PPC field. This bit must be 0.
				This specifies the number of bytes of data that the drive is allowed to pass
Allocation Length				during the DATA IN phase. The requested page is truncated if its length ex-
		Table5-		46ceeds the number of bytes specified in this field.

5-38 Maxtor Atlas 10K III