Seagate Ultra 160 Product Manual page 176

Parallel scsi interface
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code value
reserved 131
command 4, 6
aborted 4
completed 5
ended 6
linked 7
overlapped 143
SCSI-3 standards 2
single, example 140
third party 11
unlinked 11
untagged 149
command complete message 140, 141
command completion 131
command data 5
command data signal 29
Command Descriptor Block
SPI command information unit 119, 120
command descriptor block 5, 131, 135, 144, 150
10-byte commands 133
12-byte commands 134
16-byte commands 134
6-byte commands 133
control field 136
format 133
linked 7
typical variable length 135
command descriptor byte
control byte 11
command phase 75
command processing 142
command queue 138
command set 149
command structure
packetized 131
common access method
SCSI-3 standards 2
completed command 5
completed task 5
compliance with a standard 7
condition met 138
confirmation 5
confirmed protocol service 5
confirmed service reply 6
connectors 12
contingent allegiance 5
NACA=0 145
contingent allegiance condition 6, 143
control byte 142, 143
control field 136
control mode page 5, 143, 148
control/data
SCSI bus signal 15
covered signal 155
162
CRC 82
CRC protection 1
CRC. see cyclic redundancy check
CRC-32 82
current task 5, 8
cyclic redundancy check 5, 7, 82
cylinder boundary 141
D
Data
SPI data information unit 125
SPI data stream information unit 126
data 6
data bus 29
data field 5
data group 5, 8
data group transfer 5
data group transfers 1, 38
data in phase 131, 136
Data Length
SPI L_Q information unit 122, 123
data length field 7
data out phase 131, 136
data transfer modes 37
DB(15—0) 17
DB(7—0) 17
DB(P_CRCA) signals 33
DB(P1) signals 33
default self-test 151
deferred error 149
delay 27
de-skewed data valid window 28
deskewing 74
destination device 5
device
destination 5
SCSI 9
source 10
device server 3, 5
device service
request 5
response 5
device service request 6
differential 5
differential drivers and receivers 5
differential sense
SCSI bus signal 15
DIFFSENS. see Differential Sense
disc media 140
disconnect 5
capability 140
example 141
disconnect message 87, 141
Disconnect Privilege
Identify message format 87
Parallel SCSI Interface Product Manual, Rev. A

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