Chapter 5 ATAPI Interface
Page 46 Seagate Travan 40 Product Manual
Page 31hSpecial Information
Data Bits
Byte 7 6 5 4 3 2 1 0 Hex
0 0 0 Page Code 31
1 0 0 0 0 0 0 0 0 00
2
3
MSB
Additional Page Length
LSB
00
1F
4
5
MSB
Parameter Code
LSB
00
00
6 DU DS TSD ETC TMC 0 LP E1
7 Parameter Length 06
8
D
MSB
Unit Serial Number
LSB
XX
XX
Page 31hSpecial 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 is always set to 1.
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 1, indicating the
drive does not provide a target defined 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 drives ten-digit serial number.