manuais Seagate Ultra 160

Seagate Ultra 160 Manual do Utilizador (186 páginas)

Marca: Seagate | Categoria: Hardware | Tamanho: 5.14 MB |

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Parallel SCSI Interface

1

Revision status summary sheet

5

Table of Contents

7

List of Figures

13

1.0 Interface requirements

15

standards

16

1.4 Summary of SCSI messages

26

2.0 SCSI bus

27

2.1 SCSI bus signals overview

29

2.2 Signal states

31

2.3 OR-tied signals

32

2.4 Signal sources

33

2.5 SCSI bus timing

34

0 0.5 0 0.2

39

induced time asymmetry

39

due to resis

43

2.6 Measurement points

47

2.9 Data transfer modes

51

2.12 Negotiation

53

PPR, SDTR Less than or equal

55

2.12.4 Transfer agreements

56

Table 13: Transfer agreements

56

bit shall be set to zero

61

Transfer

62

3.0 Logical characteristics

65

3.2 SELECTION phase

69

3.3 RESELECTION phase

72

3.4 SCSI bus fairness

73

3.6 COMMAND phase

89

3.7 DATA phase

89

3.8 STATUS phase

90

3.9 MESSAGE phase

90

3.11 SCSI bus phase sequences

92

3.12 Data bus protection

95

4.2 Message formats

97

4.3 Message categories

99

7 6 5 4 3 2 1 0

101

0 IDENTIFY DISCPRIV LUN

101

Target’s Parallel Protocol

109

4.4 Task attribute messages

116

4.5 Task management messages

119

5.1 Attention condition

121

5.2 Bus reset condition

122

5.3 Hard reset

122

5.4 Reset events

123

6.0 SPI information units

127

[3] See Figure 16

129

[4] See Figure 18

129

[3] See Figure 18

130

6.2 SPI information units

132

field shall be reserved

135

field is not zero

135

129

143

7.0 SCSI commands

145

See notes following Table 61

148

7.3 Status

152

7.4 Command examples

154

7.5 Timing examples

156

7.8 Parameter rounding

163

8.0 Drive features

165

Command, Message, and Status

168

(Bits 14

171

Seagate Technology LLC

186

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