User manual MAXTOR ST9240AG

[. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST9300 Family: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST9300 Family: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ©1994 Seagate Technology, Inc. B September 1994 Seagate®, Seagate Technology® and the Seagate logo are registered trademarks of Seagate Technology, Inc. [. . . ] · Do not overtighten the screws (maximum torque: 3 inch-lb). 12 ST9300 Family Product Manual, Rev. B Dimensions are in inches (mm) 0. 489 ± 0. 015 (12. 42 ± 0. 38) 4. 010 (101. 85) max. (head/disc assembly) 0. 118 ± 0. 010 (3. 00 ± 0. 25) 0. 000 in (mm) 4X 3 mm × 0. 5 mm, 0. 15 in (3. 81mm) min. full thread 0. 152 ± 0. 005 (3. 86 ± 0. 13) 1. 227 ± 0. 020 (31. 17 ± 0. 51) 4. 020 (102. 11) max. (head/disc assembly to tip of pins) 1. 500 ± 0. 010 (38. 10 ± 0. 25) 0. 000 1. 375 ± 0. 015 (34. 93 ± 0. 38) 0. 155 ± 0. 020 (3. 94 ± 0. 51) 0. 000 0. 239 ± 0. 035 (6. 07 ± 0. 89) 2. 740 ± 0. 020 (69. 60 ± 0. 51) 2. 430 ± 0. 010 (61. 72 ± 0. 25) 4X 3 mm × 0. 5 mm, 0. 15 in (3. 81 mm) min. full thread Pin 1 0. 079 (2. 00) 0. 157 ± 0. 010 (3. 99 ± 0. 25) 0. 079 (2. 00) Pin 20 removed for keying Figure 2. Mounting dimensions for the ST9300 family drives ST9300 Family Product Manual, Rev. B 13 2. 3 Master/slave configuration You must establish a master/slave relationship between multiple drives attached to a single AT bus. You can configure a drive to become a master or slave by setting the master/slave jumpers, as described below and shown in Figure 3 on page 14. If only one jumper is installed or if neither jumper is installed, then the jumper settings on each drive determine whether that drive is a master or a slave. Alternatively, you can configure an ST9300 family drive as a master or slave using the cable select option. This requires a specialized daisychain cable that grounds pin 28 (CSEL) on one of its two drive connectors. If you attach the drive to the grounded CSEL connector, it becomes a master. If you attach the drive to the ungrounded CSEL connector, it becomes a slave. To use this option, the host system and both drives must support cable select. To configure an ST9300 family drive for cable select, install both master/slave jumpers. Regardless of which jumper settings are used, the slave drive must assert the DASP­ signal at power up and the master drive must monitor DASP­ at power up for the slave to be recognized. Jumper for pins A and B Removed Jumper for pins C and D Removed Configuration Drive is master; slave drive may be detected using DASP­ signal. Differentiate master and slave drives using cable select: If a drive is attached to a connector in which pin 28 is grounded, then it becomes a master. If a drive is attached to a connector in which pin 28 is ungrounded, then it becomes a slave. Removed Installed Installed Installed Removed Installed 14 ST9300 Family Product Manual, Rev. B Master/slave configuration jumpers Pin 1 B A D C Pin 20 removed for keying Circuit board Drive is master; slave may be detected using DASP­ signal Drive is master; Seagate slave drive present Drive is slave; Seagate master drive present Use CSEL pin grounding to differentiate master from slave Figure 3. Connector setup for the ST9300 family drives ST9300 Family Product Manual, Rev. B 15 2. 4 Remote LED The drive indicates activity to the host through the DASP­ line (pin 39) on the ATA interface. [. . . ] Because the Rest mode can be used in addition to the other powermanagement modes, if the BSY or DRQ bits are set, the host should wait up to 30 seconds for these bits to clear after the completion of any previous command. If either the DRQ or BSY bits are set, the host may use the DASP­ signal to determine when to initiate Rest mode. The drive asserts DASP­ when a Rest command is received and negates it when the Rest command has completed. After the Rest command is issued, the host should wait up to 10 seconds for the drive to assert INTRQ. [. . . ]