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21020285 D User’s Guide
Appendix B Cables and Connectors
Page B - 2 Introduction
Introduction
The SCSI specification allows devices to operate with either a single-ended or
a differential SCSI interface. The difference between interfaces is the manner
in which SCSI signals are driven on the cable.
The differential interface uses two lines for each signal (+SIGNAL and -
SIGNAL). A signal is true when +SIGNAL is more positive than -SIGNAL.
This interface provides better noise immunity than the single-ended interface
and so allows a longer cable length to be used.
The single-ended interface uses one line for each SCSI signal. All devices on
a single SCSI bus must operate with the same interface.
The RF3880 is available with a 16-bit differential interface, using a 68-pin high
density shielded “P” connector.
Summary
This appendix provides the following information:
• Pin-outs of the SCSI connector used for the RF3880 adapter.
• Cable Length allowed for the differential SCSI interface.
• Pinouts of the P1 and P2 VMEbus backplane connectors.
This appendix is most useful for those integrating devices into a system.
- Rimfire 3880 SCSI Host 1
- Organization 5
- Conventions 7
- Documents 8
- Table of 9
- Contents 9
- Product Overview 21
- About the 22
- Rimfire 3880 22
- Management 23
- What next? 24
- Hardware Essentials 25
- Structure and 27
- Description 27
- Block Diagram 28
- Addressing 29
- Ports: General 30
- Address Buffer 32
- SET 0 0 0 0 WID WSC BSC 33
- Channel 34
- Attention Port 34
- Status Port: 38
- Reset Port 40
- Descriptions of 41
- Port Usage 41
- Hardware Installation 43
- Overview of the 45
- Installation 45
- Step 1: 46
- Unpacking the 46
- Step 2: 47
- Jumpers and 47
- Termination 47
- Configuration 48
- Bus Request/ 49
- Grant Jumper 49
- Addresses 51
- SCSI bus 52
- Step 3: Board 53
- Insertion 53
- Step 4: Apply 54
- Conditions 55
- Step 5: 56
- Configure and 56
- Connect SCSI 56
- Command Operation 59
- What the 61
- Adapter must 61
- The Base 62
- Parameter 62
- Multiple 66
- Status Blocks 66
- 000 0 0 INT ID 68
- Using a Single 69
- Some Example 70
- 2:Inquiry 73
- Pass-through 73
- Command List 76
- Creating the 78
- Using a 79
- Adding a 80
- Removing a 80
- Example ‘C’ 81
- Routines for 81
- Initiator Mode Pass 85
- Initiator Pass 87
- Block Format 87
- DBV 0 ICC 0 IRS DAT DIR 0 88
- Setting DBV 89
- DAT and DIR 89
- Table Values 89
- Table of DAT 90
- Automatic 90
- Settings 90
- 21020285 D User’s Guide 102
- Target Mode Pass 103
- Introduction 104
- Overview of 105
- Target Mode 105
- What must the 106
- Target Mode? 106
- Commands 107
- Special Target 107
- Command 108
- Descriptor 108
- Block Group 108
- Operation 109
- Sequence of 111
- Responding to 111
- Selection Data 112
- Structure 112
- 76543210 113
- CC ERR RTY 0 0 0 0 TME 113
- 0000000SAV 116
- Response 117
- 0 0 ICC TMO 0 DAT DIR 0 118
- Status Block 121
- CC ERR RTY 0 0 CSB 0 TMS 122
- Board-control Commands 125
- Using the 127
- Reference 127
- General Status 128
- List of 129
- Start Command 130
- List (01H) 130
- 1514131211109876543210 131
- 0 0 0 0 0 INT Status/ID 131
- Stop Command 132
- List (02H) 132
- Identify (05H) 133
- Identify 134
- Description of 134
- Statistics (06H) 136
- Statistics Data 138
- General 139
- Options (07H) 139
- Unit Options 142
- 0 0 0 RBE RCE RPE ISB INT 143
- 0 TAG 0 0 WID IAT SYN UNQ 144
- Diagnostic/ 148
- Self-test (09H) 148
- Enable (0AH) 151
- 000 0 0 INT Status/ID 152
- Disable (0BH) 153
- Abort (0DH) 154
- SCSI Hard 155
- Reset (10H) 155
- Information 156
- Data Structure 157
- Extended 165
- Statistics (16H) 165
- Extended Unit 169
- Options (18H) 169
- Options Data 170
- Details of Usage 175
- Byte and Word 177
- Swapping 177
- How to Use 182
- How It Works 183
- Notes on 184
- Usage and 185
- SCSI Protocol 185
- Handling 185
- Routines 188
- Disconnect 189
- Privilege 189
- Error Codes 193
- User’s Guide 21020285 D 195
- Appendix A Error Codes 195
- Summary Page A - 3 195
- Table 116: Error Codes 195
- Appendix A Error Codes 196
- Page A - 4 Summary 196
- Summary Page A - 5 197
- Status Port 198
- Self-test Error 199
- Self-test 199
- Cables and Connectors 201
- Connector 203
- Table 123: P2 Connector 205
- Specifications 207
- Appendix C Specifications 210
- Page C - 4 Specifications 210
- Defaults 211
- Hardware 213
- Appendix D Defaults 216
- Design Differences 217
- Features no 219
- Supported 219
- Implementation 220
- Differences 220
- Maximize 222
- Performance 222
- Index 224
- Page ii 224
- Index 225
- Page iii 225
- Page iv 226
- Page vi 228
- 21020285 D 230
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