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Seagate ST300MM0026 Savvio 10K.1 FC Product Manual - Page 73

Signal characteristics

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9.5.12 Device control codes The drive inputs a Device Control Code on the DEV_CTRL_CODE lines at power up to determine the link rate on the Fibre Channel ports. Both ports run at the same rate. If the backpanel does not connect to these lines, the drive has 10K ohm pull up resistors that default the device control code to 7 (1.0625 GHz). Table lists the supported codes. Table 26: Device control code values 2 (pin 17) 0 0 0 0 1 1 1 1 1 (pin 18) 0 0 1 1 0 0 1 1 0 (pin 39) 0 1 0 1 0 1 0 1 Definition Reserved for power failure warning. Reserved for auto negotiation of link rate. Reserved. Reserved. Reserved. Reserved. 2.125 GHz operation on both ports. 1.0625 GHz operation on both ports. 9.6 Signal characteristics This section describes the electrical signal characteristics of the drive's input and output signals. See Table 22 on page 62 for signal type and signal name information. 9.6.1 TTL input characteristics Table 27 provides the TTL characteristics. Table 27: TTL characteristics State Voltage Input high Input low Output high (-EN Bypass A, B) Output low (-EN Bypass A, B) Output high (-Parallel ESI) Output low (-Parallel ESI) Output high (all other outputs) Output low (all other outputs) 1.9 < VIH < 5.5V -0.5V < VIL < 0.9V 2.4 < VOH < 5.25V VOL < 0.5V 2.4 < VOH < 0.9 VCC VOH > 0.9VCC 0 < VOL < .45V 2.4 < VOH < 0.9 VCC VOH > 0.9VCC 0 < VOL < .45V Current IIH = ±500nA max. IOL = ±500nA max. IOH < -3mA IOL < 3mA IOH < -2.4mA IOH < -500µA IOL < 2.4mA IOH < -1.6mA IOH < -500µA IOL < 1.6mA Savvio FC Product Manual, Rev. D 67

Section	Page
1.0 Scope	7
2.0 Applicable standards and reference documentation	9
2.1 Standards	9
2.1.1 Electromagnetic compatibility	9
2.1.1.1 Electromagnetic susceptibility	9
2.1.2 Electromagnetic compliance	10
2.2 Reference documents	11
3.0 General description	13
3.1 Standard features	13
3.2 Media description	14
3.3 Performance	14
3.4 Reliability	15
3.5 Formatted capacities	15
3.5.1 Programmable drive capacity	15
3.6 Factory-installed accessories	16
3.7 Factory-installed options	16
3.8 User-installed accessories	16
4.0 Performance characteristics	17
4.1 Internal drive characteristics	17
4.2 Seek performance characteristics	17
4.2.1 Access time	17
4.2.2 Format command execution time for ³ 512-byte sectors (minutes)	18
4.2.3 General performance characteristics	18
4.3 Start/stop time	18
4.4 Prefetch/multi-segmented cache control	19
4.5 Cache operation	19
4.5.1 Caching write data	20
4.5.2 Prefetch operation	20
4.5.3 Optimizing cache performance for desktop and server applications	21
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Recoverable Errors	23
5.1.2 Unrecoverable Errors	23
5.1.3 Seek errors	24
5.1.4 Interface errors	24
5.2 Reliability and service	24
5.2.1 Mean time between failures (MTBF)	24
5.2.2 Preventive maintenance	24
5.2.3 Hot plugging the drive	24
5.2.4 S.M.A.R.T.	25
5.2.5 Thermal monitor	26
5.2.6 Drive Self Test (DST)	27
5.2.6.1 DST failure definition	27
5.2.6.2 Implementation	28
5.2.6.2.1 State of the drive prior to testing	28
5.2.6.2.2 Invoking DST	28
5.2.6.2.3 Short and extended tests	28
5.2.6.2.4 Log page entries	29
5.2.6.2.5 Abort	29
5.2.7 Product warranty	29
6.0 Physical/electrical specifications	31
6.1 AC power requirements	31
6.2 DC power requirements	31
6.2.1 Conducted noise immunity	33
6.2.2 Power sequencing	33
6.2.3 Current profiles	33
6.3 Power dissipation	36
6.4 Environmental limits	38
6.4.1 Temperature	38
6.4.2 Relative humidity	38
6.4.3 Effective altitude (sea level)	38
6.4.4 Shock and vibration	39
6.4.4.1 Shock	39
6.4.4.2 Vibration	41
6.4.5 Air cleanliness	41
6.4.6 Corrosive environment	41
6.4.7 Acoustics	42
6.4.8 Electromagnetic susceptibility	42
6.5 Mechanical specifications	43
7.0 Defect and error management	45
7.1 Drive internal defects/errors	45
7.2 Drive error recovery procedures	45
7.3 FC-AL system errors	46
8.0 Installation	47
8.1 Drive orientation	47
8.2 Cooling	47
8.3 Drive mounting	48
8.4 Grounding	48
9.0 Interface requirements	49
9.1 FC-AL features	49
9.1.1 Fibre Channel link service frames	49
9.1.2 Fibre Channel task management functions	50
9.1.3 Fibre Channel task management responses	50
9.1.4 Fibre Channel port login	51
9.1.5 Fibre Channel port login accept	52
9.1.6 Fibre Channel Process Login	52
9.1.7 Fibre Channel Process Login Accept	53
9.1.8 Fibre Channel fabric login	53
9.1.9 Fibre Channel fabric accept login	54
9.1.10 Fibre Channel Arbitrated Loop options	55
9.2 Dual port support	55
9.3 SCSI commands supported	56
9.3.1 Inquiry data	61
9.3.2 Mode Sense data	61
9.4 Miscellaneous operating features and conditions	65
9.5 FC-AL physical interface	66
9.5.1 Physical characteristics	66
9.5.1.1 Physical description	66
9.5.2 Connector requirements	67
9.5.3 Electrical description	67
9.5.4 Pin descriptions	68
9.5.5 FC-AL transmitters and receivers	69
9.5.6 Power	69
9.5.7 Fault LED Out	69
9.5.8 Active LED Out	70
9.5.9 Enable port bypass signals	70
9.5.10 Motor start controls	70
9.5.11 SEL_6 through SEL_0 ID lines	71
9.5.11.1 Parallel Enclosure Services Interface (ESI)	71
9.5.12 Device control codes	73
9.6 Signal characteristics	73
9.6.1 TTL input characteristics	73
9.6.2 Differential PECL output	74
9.6.3 Differential PECL input	74