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SC2500 User Guide Ver 2.1 

May 6, 2003 

Page 16 of 26 

3.3.12  Read Capacity – 25h 
 
The READ CAPACITY command provides a means for the initiator to request 
information regarding the capacity of the logical unit. 
 

 

Read Capacity CDB 
 
3.3.13  Extended Read (10) – 28h 
 
The READ (10) command requests that the target transfer data to the initiator. 
The most recent data value written in the addressed logical block is returned. 
 
 

 

Read (10) CDB 
 

Summary of Contents for SC2500 Stinger

Page 1: ...SC2500 Stinger 2 5 Solid State SCSI Drive User Guide 153866 001 Revision 2 1 May 6 2003 Memtech SSD Corporation 7628 Las Positas Road Livermore CA 94550 800 445 5511 www memtech com...

Page 2: ...chments 21 5 4 Software Installation Procedure 21 6 JUMPER CONFIGURATION 22 6 1 Switch Locations 22 6 2 Default Jumper Configuration 23 6 3 SCSI ID Selection 23 6 4 Write Protection 23 6 5 Termination...

Page 3: ...perate It is essentially a drop in replacement for standard rotating media The SC2500 can be used in applications where operating conditions are harsh and when reliability is critical A 100 CMOS logic...

Page 4: ...nds and several optional commands to enhance functionality The following is a list of commands and their equivalent hexadecimal representation 1 Test Unit Ready 00h M 2 Rezero Unit 01h O 3 Request Sen...

Page 5: ...s a 50 pin right angle 2mm center connector mounted on the PCB to create both a power and signal connection to the host Maximum cable length is 6 meters The diagram below depicts connector orientation...

Page 6: ...16 DB5 17 KEY 18 DB6 19 GROUND 20 DB7 21 GROUND 22 DBP 23 GROUND 24 TERMPWR 25 ATN 26 BSY 27 GROUND 28 ACK 29 RST 30 MSG 31 GROUND 32 SEL 33 IO 34 C D 35 GROUND 36 REQ 37 GROUND 38 GROUND 39 5 Volt Po...

Page 7: ...rational or is in a state such that an initiator action is required to make the unit ready the target shall return CHECK CONDITION status with a sense key of NOT READY 3 3 2 Rezero Unit Command 01h Re...

Page 8: ...riptor block b An unrecovered parity error is detected on the data bus c A target malfunction prevents return of the sense data If a recovered error occurs during the execution of the REQUEST SENSE co...

Page 9: ...SC2500 User Guide Ver 2 1 May 6 2003 Page 9 of 26 Sense data format...

Page 10: ...e logical unit is reserved or any extent reservation from any initiator is active in the specified logical unit During the execution of the FORMAT UNIT command the SC2500 may perform a medium defect m...

Page 11: ...fer length of zero indicates that 256 logical blocks shall be transferred Any other value indicates the number of logical blocks that shall be transferred 3 3 6 Write 6 Command 0Ah The WRITE 6 command...

Page 12: ...EVPD bit of zero specifies that the SC2500 return the standard INQUIRY data If the page code field is not zero the target shall return CHECK CONDITION status with the sense key set to ILLEGAL REQUEST...

Page 13: ...SC2500 User Guide Ver 2 1 May 6 2003 Page 13 of 26 Standard Inquiry Data Format Please refer to the SCSI specification for further details on the vital product data pages and formats...

Page 14: ...cal unit or if the extent reservation option is implemented extents within a logical unit Reserve CDB 3 3 9 Release Unit 17h The RELEASE command is used to release a previously reserved logical unit o...

Page 15: ...MODE SENSE data at the target s discretion A DBD bit of one specifies that the target shall not return any block descriptors in the returned MODE SENSE data The page control PC field defines the type...

Page 16: ...des a means for the initiator to request information regarding the capacity of the logical unit Read Capacity CDB 3 3 13 Extended Read 10 28h The READ 10 command requests that the target transfer data...

Page 17: ...SC2500 User Guide Ver 2 1 May 6 2003 Page 17 of 26 3 3 14 Extended Write 10 The WRITE 10 command requests that the SC2500 write the data transferred by the initiator to the medium Write 10 CDB...

Page 18: ...nd the sense key shall be set to ILLEGAL REQUEST with an additional sense code of INVALID FIELD IN CDB If the ERA bit is zero a transfer length of zero indicates that no blocks shall be erased This co...

Page 19: ...Data Access time 0 3 msec Environmental Requirements Operating Ambient Temperature Commercial 0o C to 70o C Extended 20o C to 75o C Industrial 40 o C to 85 o C Storage Temperature 55o C to 125o C Ambi...

Page 20: ...hat the system disk be addressed as device 0 or 1 on the SCSI bus If a different ID is required refer to section 6 for proper switch settings 5 2 2 Power off the computer system by throwing the main p...

Page 21: ...able is keyed and cannot be inserted backwards At this point installation is complete 5 2 10 Reattach the AC power cable to the system and power up 5 3 Power and Cable Attachments The following diagra...

Page 22: ...N 6 1 Switch Locations The following diagram shows the unit as viewed from the bottom and shows the relative location of the switches and jumpers as described in the text below LED CR2 WP ID2 ID1 ID0...

Page 23: ...ON ON SCSI ID 7 ON ON OFF SCSI ID 6 ON OFF ON SCSI ID 5 ON OFF OFF SCSI ID 4 OFF ON ON SCSI ID 3 OFF ON OFF SCSI ID 2 OFF OFF ON SCSI ID 1 OFF OFF OFF SCSI ID 0 6 4 Write Protection The WP switch of...

Page 24: ...list of possible error indicators or messages what they indicate and possible solutions to the source problem If no solution is found contact the factory for further assistance 7 1 Error Blink Codes...

Page 25: ...te protected 3 Remap Table disabled SW1 7 ON 7 3 Unit does not respond to SCSI commands If the unit passes power up diagnostics but does not respond to SCSI commands there may be a SCSI ID contention...

Page 26: ...p for the life of the drive The warranty is void in the case of misuse accident alteration improper installation misapplication or the result of unauthorized service or repair The implied warranties o...

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