Maxtor 10K V manual Appendix B Negotiated Rate Information page Reference

Appendix B NEGOTIATED RATE INFORMATION PAGE REFERENCE

This appendix provides information about the INQUIRY command’s Negotiated Rate Information Page that is not provided in Section 5.11.2.7. Specifically, it provides the codes and meanings for the Transfer Period Factor field (byte 4) and a table that explains the allowable settings for the QAS, DT, and IU fields (bits 2, 1, and 0, respectively, of byte 7).

B.1 TRANSFER PERIOD FACTOR FIELD

	Table B-1 provides the codes and meanings allowed for the Transfer Period Factor
	field if the value of PARL (Parallel Protocol, bit 2 of byte 6 of the Negotiated Rate
	Information Page) is 1.
	Table B-2 provides the allowable codes when the value of PARL = 0.
	Table B-1Transfer Period Factor Field Values When PARL = 1
Code		Description
00h – 07h		Reserved.
08h		Transfer period=6.25ns (Fast160 or U320 is latched every 6.25 ns)
		This code is valid only if the protocol options bits (QAS,DT and IU) of
		the page have values selected that support double transition (DT) Trans-
		fers.
00h – 08h		Transfer Period=6.25ns (Fast160 or U320 is latched every 6.25 ns)
		This code is valid only if the protocol options bits (QAS,DT and IU) of
		the page have values selected that support double transition (DT) Trans-
		fers.
09h		Transfer period = 12.5 ns (Fast-80 or U160 is latched every 12.5 ns).
		This code is valid only if the protocol options bits (QAS, DT, and IU) of
		the page have values selected that support double transition (DT) data
		transfers.
0Ah		Transfer period = 25 ns (Fast-40 or Ultra2 data is latched every 25 ns).
0Bh		Transfer period = 30 ns (Fast-40 data is latched every 30 ns).

Maxtor Atlas 10K V B-1