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Chapter 5 ATAPI Interface
Page 48 Seagate Travan 40 Product Manual
Data Bits
Byte 7 6 5 4 3 2 1 0 Hex
34 Parameter Length 04
35
38
MSB
Longest Time Between Cleanings
(in Minutes)
LSB
XX
XX
XX
XX
39
3A
MSB
Parameter Code
LSB
00
06
3B DU DS TSD ETC TMC 0 LP 40
3C Parameter Length 02
3D
3E
MSB
Cleaning Interval (in Minutes)
LSB
XX
XX
Page 33h—Special Information Definitions
Byte
00 Page Code
Set to 31h.
01 Reserved
Set to 00h
02-03 Additional Page
Length
Set to 1Eh.
04-05 Parameter Code
Set to 00 00h, indicating the first parameter follows.
06 DU
The Disable Update bit must be set to 0, indicating the drive
updates parameter values for all events.
DS
The Disable Save bit is always set to 1, indicating the drive does
not save parameter values.
TSD
The Target Save Disable bit is always set to 0 indicating the
drive defines a method for saving log parameters.
ETC
The Enable Threshold Comparison bit is always set to 0,
indicating comparison to the threshold value is not performed
whenever the cumulative value is updated.
TMC
The Threshold Met Criteria bits are used with the ETC bit and
are always set to 0.
LP
The List Parameters bit is always set to 1, indicating the
parameter is a list parameter.
07 Parameter Length
Set to 0Ch, indicating 12 bytes in the counter.
08-13 Unit Serial Number
Set to the ASCII value of the drive’s ten-digit serial number. The
ten-digit value is interpreted as follows: PPSYWWNNNN.
Where: PP is the product code, i.e., TG is NS20 SCSI.
S is the manufacture location, i.e., T is Thailand.
Y is the last digit of the calendar year, i.e., 8 is 1998.
WW is the calendar week.
NNNN is the alphanumeric serial number.
(The serial number markings are detailed in document 44872.)
…
18-1A Cartridge Insertions
The number of physical loads of any cartridge type during the
life of the drive. The number of cartridge loads includes cleaning
cartridge loads and failed load attempts. The field is never reset.
…