Quantum Audio STT2401A Manuel D’Utilisation

Page de 137
Chapter 5 
 
ATAPI Interface 
Page 36 
Seagate Travan 40 Product Manual 
 
LOG SELECT (Group 2, Code 4C) 
The LOG SELECT command provides a means for the Initiator to manage statistical 
information maintained by the tape drive about itself. 
CDB for LOG SELECT Command 
 
Data Bits 
 
Byte 
Hex 
4C 
PCR 
SP 
0X 
PC 
X0 
00 
00 
00 
00 
 
MSB 
Parameter List Length 
LSB 
XX 
 
XX 
00 
PCR: The Parameter Code Reset (PCR) bit shall be set to 1 with the parameter list 
length equal to 0 to reset CERTAIN FIELDS OF Log Sense Page 03h (see their 
respective definitions). If PCR bit is 1, and the parameter list length is greater than 0, 
the command will terminate with Check Condition status. The Sense Key will be set 
to Illegal Request and the additional Sense Code will be set to Invalid Field in CDB
SP: The Save Parameters (SP) bit must be set to 0. 
PC: The Page Control (PC) field must be set to 01b. This field defines the type of 
parameter values to be selected. The Cumulative Values parameter is the only one 
supported. 
Parameter Length: This field must be set to 0 when the PCR bit is set to 1 to cause 
the parameters to be reset. This field must be set to the appropriate size when using 
page 32 to modify the configuration and the PCR bit must be 0 when sending 
parameters.