initiator can determine which message is rejected. After the file sends a MESSAGE R E J E C T message and if
A T N signal is still asserted then it shall return to the MESSAGE O U T phase. The subsequent MESSAGE
O U T phase shall begin with the first byte of a message.
9.1.10 NO OPERATION (08)
This message is sent from the initiator to the file when the initiator does not currently have any other valid
message to send. This message is ignored by the file and will not affect any operation.
9.1.11 MESSAGE PARITY ERROR (09)
This message is sent from the initiator to inform the file that the last message byte received had a parity
error.
If the initiator intends to send this message, the initiator must assert the A T N signal prior to its release of
ACK for the R E Q / A C K handshake of the message byte that has the parity error. This provides an interlock
so the file can determine which message byte has the parity error.
If the file receives this message under any other circumstance, the file will change to BUS F R E E to signal a
catastrophic error. After receiving this message, the file will retry sending the previous message to the initi-
ator.
9.1.12 LINKED COMMAND COMPLETE (0A)
The file sends this message to the initiator to indicate that execution of a linked command (with flag bit
equal to zero) has completed and that valid status has been sent to the initiator. After successfully sending
this message, the file goes to C O M M A N D phase to receive the next command.
9.1.13 LINKED COMMAND COMPLETE WITH FLAG (0B)
The file sends this message to the initiator to indicate that the execution of a linked command with flag bit
set to one has completed and that valid status has been sent to the initiator. After successfully sending this
message, the file goes to C O M M A N D phase to receive the next command.
9.1.14 BUS DEVICE RESET (0C)
This message is sent from an initiator to direct the file to clear all current commands. This message forces a
hard reset condition which will reset the file to an initial state with no operations pending for any initiator.
After receiving this message, the file will go to the BUS F R E E phase.
9.1.15 ABORT TAG (0D)
When the target receives this message successfully, it clears the current I/O process and go to Bus Free. If
the target has already started execution of an I/O process, the execution will be halted. Pending status, data
and commands for other active or queued I/O processes shall not be affected.
9.1.16 CLEAR QUEUE TAG (0E)
All I/O processes for all initiators shall be cleared. All active I/O processes shall be terminated. The target
shall go to the Bus Free phase following successfully receipt of this message.
172
O E M Spec. of DCAS-34330/32160
Содержание DCAS-32160 - Ultrastar 2.1 GB Hard Drive
Страница 2: ......
Страница 14: ...xii OEM Spec of DCAS 34330 32160...
Страница 16: ...2 OEM Spec of DCAS 34330 32160...
Страница 18: ...4 OEM Spec of DCAS 34330 32160...
Страница 19: ...Part 1 Functional Specification Copyright IBM Corp 1996 5...
Страница 20: ...6 OEM Spec of DCAS 34330 32160...
Страница 22: ...8 OEM Spec of DCAS 34330 32160...
Страница 32: ...18 OEM Spec of DCAS 34330 32160...
Страница 34: ...20 OEM Spec of DCAS 34330 32160...
Страница 56: ...6 7 1 2 68 pin Model Figure 35 Outline of 68 pin Model 42 OEM Spec of DCAS 34330 32160...
Страница 57: ...6 7 1 3 80 pin Model Figure 36 Outline of 80 pin Model Specification 43...
Страница 59: ...6 7 3 Interface Connector 6 7 3 1 50 pin Model Figure 39 Interface Connector 50 pin Model Specification 45...
Страница 60: ...6 7 3 2 68 pin Model Figure 40 Interface Connector 68 pin Model 46 OEM Spec of DCAS 34330 32160...
Страница 61: ...6 7 3 3 80 pin Model Figure 41 Interface Connector 80 pin Model Specification 47...
Страница 62: ...6 7 4 Mounting Positions and Tappings Figure 42 Mounting Positions and Tappings 48 OEM Spec of DCAS 34330 32160...
Страница 70: ...56 OEM Spec of DCAS 34330 32160...
Страница 71: ...Part 2 SCSI Interface Specification Copyright IBM Corp 1996 57...
Страница 72: ...58 OEM Spec of DCAS 34330 32160...
Страница 176: ...162 OEM Spec of DCAS 34330 32160...
Страница 178: ...164 OEM Spec of DCAS 34330 32160...
Страница 198: ...184 OEM Spec of DCAS 34330 32160...
Страница 218: ...204 OEM Spec of DCAS 34330 32160...
Страница 228: ...214 OEM Spec of DCAS 34330 32160...
Страница 232: ...IBML Part Number 73H7993 Published in Japan S73H 7993 03...