User manual MAXTOR CFP1080S

[. . . ] CFP1080S/CFP1080E Intelligent Disk Drive Product Manual Production Release Per ECO 6561 P/N 20401007-001 Revision A August 1995 3081 Zanker Road San Jose, CA 95134-2128 (408) 456-4500 FCC Notice This equipment generates and uses radio frequency energy and, if not installed and used properly; that is, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment on and off, you are encouraged to try to correct the interference by one or more of the following measures: · · · Reorient the receiving antenna. [. . . ] Refer to Table 5-8 on page 44 for interface connector pin assignments. Table 4-1 Setting the SCSI ID SCSI ID 0 1 2 3 4 5 6 7 SCSI ID(0) Open Ground Open Ground Open Ground Open Ground SCSI ID(1) Open Open Ground Ground Open Open Ground Ground SCSI ID(2) Open Open Open Open Ground Ground Ground Ground Page 28 Conner CFP1080E/CFP1080S Installing the Drive Chapter 4 Disabling Spin-Up at Power On - CFP1080E Spin up upon application of power to the drive can be disabled by grounding the RMT_START line on the interface. Disabling spin up on application of power can also be enabled by setting the DSPN bit in MODE SELECT page 00H (Vendor Specific Parameters). The Host must issue a START STOP UNIT command to cause the drive to spin up. Refer to the Eighth Generation Disk Drive SCSI Interface Manual for additional information regarding the MODE SELECT and START STOP UNIT commands. Table 4-2 Disabling Spin Up at Power On RMT_START Interface Pin Ground Ground Open Open Mode Page 0 DSPN bit 0 1 0 1 Power-On Behavior Spin Disabled Spin Disabled Spin up on Power On Spin Disabled Delaying Spin Up at Power On - CFP1080E Grounding the DLYD_START signal on the interface delays spin up on power-up by the value of the drive's SCSI ID multiplied by 4 seconds (i. e. Delaying spin up on application of power can also be enabled by setting the SDLY bit in MODE SELECT page 00H (Vendor Specific Parameters). Refer to Eighth Generation Disk Drive SCSI Interface Manual for additional information regarding the MODE SELECT command. Table 4-3 Delaying Spin Up at Power On DLYD_START Interface Pin Ground Ground Open Open Mode Page 0 SDLY bit 0 1 0 1 Power-On Behavior Spin Delayed Spin Delayed Spin up on Power On Spin Delayed Host Interface Connection - CFP1080E The drive may be connected to the host SCSI interface directly through a backplane SCA connector or through cabling. Both the connector and cabling is described in Chapter 5. The design of the SCSI bus interconnect system should meet the following guidelines, particularly with FAST SCSI-2 systems: Technical Reference Manual Page 29 Chapter 4 Installing the Drive · · · · · · Do not route the data signals next to any high frequency or large current switching signals. Unreliable drive operation can result from improper signal routing. Signal line stubs should not exceed 0. 1 meter (4 inches). There should be 0. 3 meters (12 inches) of transmission line between drives. The total length of any signal line should not exceed 6 meters (20 feet) and may have to be reduced if excessive impedance discontinuities exist on the bus. Maintain a minimum of 0. 050 inches (1. 27mm) gap between adjacent signal. runs to control crosstalk between signal lines. Signals routed over a ground plane or between ground planes have different characteristic impedance. Signals with critical timing like REQ, ACK and Data should be routed similarly. The signal length between devices should either be spaced shorter than the stub length, which treats a group of devices as a lumped element, or far enough apart that a transmission line exists (0. 3 meters or 12 inches). These signal length considerations should include the length of signal traces and connectors on the printed circuit board. The diagram below shows how it is possible to interconnect six 1-inch height drives over a relatively short length of interconnect. 3" [0. 08m] maximum 12" [0. 3m] minimum These guidelines apply to both cabled and backplane implementations. Guidelines specifically for cabled implementations can be found on page 36. While it is possible to connect SCA drives using a cable, users should be aware that the mating connector is designed for 0. 025 inch (0. 63 mm) pitch 30 AWG wire. There are four +12 volt and three +5 volt line pairs carrying power to the drive on the SCA so spin up must be staggered to connect two drives on the same cable. [. . . ] Interleave: Defines the interleave value used by the drive. Track Skew Factor: Defines the number of physical sectors between the last logical block of one track, and the first logical block on the next sequential track of the same cylinder. Cylinder Skew Factor: Specifies the number of physical sectors between the last logical block of one cylinder and the first logical block on the next sequential cylinder. SSEC (Soft Sector Format): Set to zero to indicate the drive does not support a soft sector format. [. . . ]