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Transmitter, or transceiver, Line Driver, Cable, Receiver, Line Receiver

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Medalist Pro Product Manual, Rev. D 71 Receiver characteristics Single-ended drives use an ANSI SCSI single-ended receiver with hysteresis gate or equivalent as a line receiver. Line Driver Transmitter (or transceiver) TP [4] 110 [1] Ohm Flat Cable Pair Line Receiver TP [4] Receiver 110 [1] Ohm [3] [2] [2] Figure 23. Single-ended transmitters and receivers Notes. [1] Part of active terminator circuits. Non-removable LSI terminators, enabled in the drive (models "N" and "W" only) with jumper plug TE when it is first or last in the daisy chain. Interface signals levels and logical sense at the drive I/O connector are defined as follows: Logic level Driver output Receiver input NEGATED (0) >2.5 V: 2.0 V:

Section	Page
Medalist Pro	1
Medalist Pro	3
Revision status summary sheet	5
Contents	7
1.0 Scope 1	7
2.0 Applicable standards and reference documentation 3	7
2.1 Standards 3	7
2.1.1 Electromagnetic compatibility 3	7
2.1.2 Electromagnetic susceptibility 3	7
2.2 Electromagnetic compliance 3	7
2.3 Reference documents 4	7
3.0 General description 5	7
3.1 Standard features 7	7
3.2 Media characteristics 7	7
3.3 Performance 7	7
3.4 Reliability 7	7
3.5 Unformatted and formatted capacities 8	7
3.6 Programmable drive capacity 8	7
3.7 Factory installed accessories 8	7
3.8 Options (factory installed) 8	7
3.9 Accessories (user installed) 8	7
4.0 Performance characteristics 9	7
4.1 Internal drive characteristics (transparent to user) 9	7
4.2 SCSI seek performance characteristics (visible to user) 9	7
4.2.1 Access time 9	7
4.2.2 Format command execution time (minutes) 10	7
4.2.3 Generalized performance characteristics 10	7
4.3 Start/stop time 11	7
4.4 Prefetch/multi-segmented cache control 11	7
4.5 Cache operation 11	7
4.5.1 Caching write data 12	7
4.5.2 Prefetch operation 12	7
5.0 Reliability specifications 13	7
5.1 Error rates 13	7
5.1.1 Environmental interference 13	7
5.1.2 Read errors 13	7
5.1.3 Write errors 13	7
5.1.4 Seek errors 14	7
5.2 Reliability and service 14	7
5.2.1 Mean time between failure 14	7
5.2.2 Preventive maintenance 14	7
5.2.3 Service life 14	7
5.2.4 Service philosophy 14	7
5.2.5 Service tools 14	7
5.2.6 Hot plugging Medalist Pro disc drives 15	7
5.2.7 S.M.A.R.T. 15	7
5.2.8 Product warranty 16	7
6.0 Physical/electrical specifications 19	7
6.1 AC power requirements 19	7
6.2 DC power requirements 19	7
6.2.1 Conducted noise immunity 20	7
6.2.2 Power sequencing 20	7
6.2.3 12 V - Current profile 21	7
6.3 Power dissipation 22	7
6.4 Environmental limits 22	7
6.4.1 Temperature 22	7
6.4.2 Relative humidity 24	7
6.4.3 Effective altitude (sea level) 24	8
6.4.4 Shock and vibration 24	8
6.4.5 Air cleanliness 26	8
6.4.6 Acoustics 26	8
6.4.7 Electromagnetic susceptibility 26	8
6.5 Mechanical specifications 27	8
7.0 Defect and error management 31	8
7.1 Drive internal defects and errors 31	8
7.2 SCSI systems errors 31	8
8.0 Installation 33	8
8.1 Drive ID/option select header 33	8
8.1.1 Notes for Figures 9, 10, 11, 12, 13, and 14. 38	8
8.1.2 Function description 40	8
8.2 Drive orientation 41	8
8.3 Cooling 41	8
8.3.1 Air flow 41	8
8.4 Drive mounting 42	8
8.5 Grounding 42	8
9.0 Interface requirements 43	8
9.1 General description 43	8
9.2 SCSI interface messages supported 43	8
9.3 SCSI interface commands supported 44	8
9.3.1 Inquiry Vital Product data 47	8
9.3.2 Mode Sense data 49	8
9.4 SCSI bus conditions and miscellaneous features supported 53	8
9.5 Synchronous data transfer 54	8
9.5.1 Synchronous data transfer periods supported 54	8
9.5.2 REQ/ACK offset 54	8
9.6 Physical interface 55	8
9.6.1 DC cable and connector 55	8
9.6.2 SCSI interface physical description 58	8
9.6.3 SCSI interface cable requirements 58	8
9.6.4 Mating connectors 59	8
9.7 Electrical description 70	8
9.7.1 Single-ended drivers/receivers 70	8
9.7.2 Multimode—SE or LVD alternative 71	8
9.8 Terminator requirements 73	8
9.9 Terminator power 74	8
10.0 Seagate Technology support services 77	8
List of Figures	9
Figure 1. Medalist Pro family drive 1	9
Figure 2. Medalist Pro family drive (50-pin I/O connector version) 6	9
Figure 3a. Typical Medalist Pro family drive +12 V current profile 21	9
Figure 3b. Typical Medalist Pro family drive +5 V current profile 21	9
Figure 4. Locations of printed circuit board (PCB) components listed in Table 3 23	9
Figure 5. Recommended mounting 25	9
Figure 6. Mounting configuration dimensions for “N” models 27	9
Figure 7. Mounting configuration dimensions for “W” and “LW” models 28	9
Figure 8. Mounting configuration dimensions for “WC” and “LC” models 29	9
Figure 9. Medalist Pro family drive ID select header for “N” models 34	9
Figure 10. Medalist Pro family drive ID select for “W,” “WC,” “LW,” and “LC” models 35	9
Figure 11. Medalist Pro family drive ID select header J1-auxiliary for “W” and “LW” models (J1-Au...	9
Figure 12. Medalist Pro family drive option select header for “N” and “W” models 37	9
Figure 13. Medalist Pro family drive option select header for “WC” models 37	9
Figure 14. Medalist Pro family drive option select header for models “LW” and “LC” 38	9
Figure 15. Air flow (suggested) 41	9
Figure 16. Physical interface for “N” model drives 56	9
Figure 17. Physical interface for “W” and “LW” model drives 57	9
Figure 18. Physical interface for “WC” and “LC” model drives 57	9
Figure 19. SCSI daisy-chain interface cabling for “N” and “W” model drives 61	9
Figure 20. Nonshielded 50 pin SCSI device connector used on “N” model drives 62	9
Figure 21. Non-shielded 68 pin SCSI device connector used on “W” and “LW” model drives 63	9
Figure 22. Non-shielded 80 pin SCSI “SCA-2” connector, used on “WC” and “LC” model drives 64	9
Figure 23. Single-ended transmitters and receivers 71	9
Figure 24. LVD output signals 72	9
Figure 25. Typical SE-LVD alternative transmitter receiver circuits 73	9
1.0 Scope	11
Figure 1. Medalist Pro family drive	11
2.0 Applicable standards and reference documentation	13
2.1 Standards	13
2.1.1 Electromagnetic compatibility	13
2.1.2 Electromagnetic susceptibility	13
2.2 Electromagnetic compliance	13
2.3 Reference documents	14
3.0 General description	15
Figure 2. Medalist Pro family drive (50-pin I/O connector version)	16
3.1 Standard features	17
3.2 Media characteristics	17
3.3 Performance	17
3.4 Reliability	17
3.5 Unformatted and formatted capacities	18
3.6 Programmable drive capacity	18
3.7 Factory installed accessories	18
3.8 Options (factory installed)	18
3.9 Accessories (user installed)	18
4.0 Performance characteristics	19
4.1 Internal drive characteristics (transparent to user)	19
4.2 SCSI seek performance characteristics (visible to user) [6]*	19
4.2.1 Access time [8]	19
4.2.2 Format command execution time (minutes) [1]*	20
4.2.3 Generalized performance characteristics	20
4.3 Start/stop time	21
4.4 Prefetch/multi-segmented cache control	21
4.5 Cache operation	21
4.5.1 Caching write data	22
4.5.2 Prefetch operation	22
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Environmental interference	23
5.1.2 Read errors	23
5.1.3 Write errors	23
5.1.4 Seek errors	24
5.2 Reliability and service	24
5.2.1 Mean time between failure	24
5.2.2 Preventive maintenance	24
5.2.3 Service life	24
5.2.4 Service philosophy	24
5.2.5 Service tools	24
5.2.6 Hot plugging Medalist Pro disc drives	25
5.2.7 S.M.A.R.T.	25
5.2.8 Product warranty	26
6.0 Physical/electrical specifications	29
6.1 AC power requirements	29
6.2 DC power requirements	29
6.2.1 Conducted noise immunity	30
6.2.2 Power sequencing	30
6.2.3 12 V - Current profile	31
Figure 3a. Typical Medalist Pro family drive +12 V current profile	31
Figure 3b. Typical Medalist Pro family drive +5 V current profile	31
6.3 Power dissipation	32
6.4 Environmental limits	32
6.4.1 Temperature	32
Figure 4. Locations of printed circuit board (PCB) components listed in Table 3	33
6.4.2 Relative humidity	34
6.4.3 Effective altitude (sea level)	34
6.4.4 Shock and vibration	34
6.4.4.1 Shock	34
Figure 5. Recommended mounting	35
6.4.4.2 Vibration	35
6.4.5 Air cleanliness	36
6.4.6 Acoustics	36
6.4.7 Electromagnetic susceptibility	36
6.5 Mechanical specifications	37
Figure 6. Mounting configuration dimensions for “N” models	37
Figure 7. Mounting configuration dimensions for “W” and “LW” models	38
Figure 8. Mounting configuration dimensions for “WC” and “LC” models	39
7.0 Defect and error management	41
7.1 Drive internal defects and errors	41
7.2 SCSI systems errors	41
8.0 Installation	43
8.1 Drive ID/option select header	43
Figure 9. Medalist Pro family drive ID select header for “N” models	44
Figure 10. Medalist Pro family drive ID select for “W,” “WC,” “LW,” and “LC” models	45
Figure 11. Medalist Pro family drive ID select header J1-auxiliary for “W” and “LW” models (J1-Au...	46
Figure 12. Medalist Pro family drive option select header for “N” and “W” models	47
Figure 13. Medalist Pro family drive option select header for “WC” models	47
Figure 14. Medalist Pro family drive option select header for models “LW” and “LC”	48
8.1.1 Notes for Figures 9, 10, 11, 12, 13, and 14.	48
8.1.2 Function description	50
8.2 Drive orientation	51
8.3 Cooling	51
8.3.1 Air flow	51
Figure 15. Air flow (suggested)	51
8.4 Drive mounting	52
8.5 Grounding	52
9.0 Interface requirements	53
9.1 General description	53
9.2 SCSI interface messages supported	53
9.3 SCSI interface commands supported	54
9.3.1 Inquiry Vital Product data	57
9.3.2 Mode Sense data	59
9.4 SCSI bus conditions and miscellaneous features supported	63
9.5 Synchronous data transfer	64
9.5.1 Synchronous data transfer periods supported	64
9.5.2 REQ/ACK offset	64
9.6 Physical interface	65
9.6.1 DC cable and connector	65
Figure 16. Physical interface for “N” model drives	66
Figure 17. Physical interface for “W” and “LW” model drives	67
Figure 18. Physical interface for “WC” and “LC” model drives	67
9.6.2 SCSI interface physical description	68
9.6.3 SCSI interface cable requirements	68
9.6.3.1 Single-ended I/O circuits (“N” and “W” models)	69
9.6.4 Mating connectors	69
9.6.4.1 Mating connectors for “N” models	69
9.6.4.2 Mating connectors for “W” and “LW” models	70
9.6.4.3 Mating connectors for “WC” and “LC” models	70
Figure 19. SCSI daisy-chain interface cabling for “N” and “W” model drives	71
Figure 20. Nonshielded 50 pin SCSI device connector used on “N” model drives	72
Figure 21. Non-shielded 68 pin SCSI device connector used on “W” and “LW” model drives	73
Figure 22. Non-shielded 80 pin SCSI “SCA-2” connector, used on “WC” and “LC” model drives	74
9.7 Electrical description	80
9.7.1 Single-ended drivers/receivers	80
Figure 23. Single-ended transmitters and receivers	81
9.7.2 Multimode—SE or LVD alternative	81
Figure 24. LVD output signals	82
Figure 25. Typical SE-LVD alternative transmitter receiver circuits	83
9.8 Terminator requirements	83
9.9 Terminator power	84
10.0 Seagate Technology support services	87
Appendix A. Sense keys and additional sense codes supported	91
Index	95
Symbols	95
Numerics	95
A	95
B	95
C	95
D	95
E	96
F	96
G	97
H	97
I	97
J	97
L	97
M	97
N	98
O	98
P	98
R	98
S	99
T	100
U	100
V	100
W	100
X	100

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Medalist Pro Product Manual, Rev. D

Receiver characteristics

Single-ended drives use an ANSI SCSI single-ended receiver with hysteresis gate or equivalent as a line

receiver.

Figure 23.

Single-ended transmitters and receivers

Notes.

[1]

Part of active terminator circuits. Non-removable LSI terminators, enabled in the drive (models “N” and

“W” only) with jumper plug

when it is first or last in the daisy chain. Interface signals levels and logical

sense at the drive I/O connector are defined as follows:

The difference in the voltages between input and output signals is due to the losses in the cable.

[2]

ANSI SCSI compatible circuits.

[3]

Total interface cable length should not exceed that specified in Section 9.6.3.1.

[4]

Source of drive terminator power is an active circuit which has an input source voltage selected by jumper

plug

. See Figure 12. Applies to “N” and “W” models.

9.7.2

Multimode—SE or LVD alternative

“LW” and “LC” models have I/O circuits that can operate either in single-ended (SE) or low voltage differential

mode (LVD). When the interface “DIFFSNS” line is between 0 V and .6 V, the drive interface circuits operate

single-ended and up to and including 20 M transfers/s (Fast-20 or Ultra-1 SCSI). When “DIFFSENS” is betwen

+0.7 V and +1.9 V, the drive interface circuits operate low voltage differential and up to and including 40 M

transfers/s or less (Fast-40 or Ultra-2 SCSI). This arrangement is not intended to allow dynamically changing

transmission modes, but rather to prevent incompatible devices from attempting to interoperate. Drives must

operate only in the mode for which the installation and interface cabling is designed. Multimode I/O circuits

used by “LC” and “LW” devices do not operate at high voltage differential levels and should never be exposed

to high voltage differential environments unless the common mode voltages in the environment are controlled

to safe levels for single-ended and low voltage differential devices (see the ANSI SPI-2 specification X3T10/

1142D).

Multimode signals

Multimode circuit SE alternative signal characteristics are the same as described in Section 9.7.1. The SE

alternative for these circuits is selected as described above. SE cables and termination must be used.

Multimode circuit LVD alternative signal characteristics are not the same as the differential signals described in

Section 9.7.2.1. The Multimode signal lines (either SE or LVD) should be terminated with 110 ohm active termi-

nator circuits at each end of the total cable. Termination of the I/O lines must be provided for by the Host equip-

ment designers or end users.

The SE and differential alternatives are mutually exclusive.

Logic level

Driver output

Receiver input

NEGATED (0)

2.5 V: <5.25 V

2.0 V:

5.25 V

ASSERTED (1)

0.4 V: >0.0

0.8 V:

0. 0 V

Transmitter

(or transceiver)

Line Driver

Flat

Cable

Pair

[3]

[2]

[4]

[1]

110

Ohm

[4]

[1]

110

Ohm

Receiver

Line Receiver

[2]