Chapter 2 — Overview and Operation
117
SCSI Command Error Conditions
Sense Data Error Codes
After Power-up, SCSI Reset, or Bus Device Reset
The Vela 4-Channel MPEG-2 Decoder will respond only with SCSI Status Check
Condition without any transfer of data to any SCSI command except
INQUIRY
and
REQUEST
SENSE
. The host adapter (initiator), after seeing the check condition,
should respond by performing a
REQUEST
SENSE
. Per the SCSI-2 recommenda-
tions, the initiator should renegotiate for synchronous data transfers and wide
transfers. This is done to enable hot swap capability and proper negotiation for
Sync and Wide data.
NOTE: Hot swap is not addressed within the SCSI-2 specification.
After the above, the decoder will respond to the
INQUIRY
,
REQUEST
SENSE
, and
TEST
UNIT
READY
commands. The decoder will return the Check Condition SCSI Status to
TEST
UNIT
READY
or any other SCSI command. The host must see the Check Condi-
tion and perform
REQUEST
SENSE
at which time the sense data will be:
UNIT ATTENTION, POWER ON, RESET, OR BUS DEVICE RESET Occurred
After the initiator has seen the Unit Attention, all valid SCSI commands become
operational. While the decoder is still initializing video and audio hardware for the
DECODER
(45h) command,
MPEG
PLAY
(A5h),
MPEG
WRITE
(2Ah), and
TEST
UNIT
READY
(00h), the decoder will return:
NOT READY, LOGICAL UNIT IS IN PROCESS OF BECOMING READY
SCSI Command Error Conditions
The listing below includes the possible values of SCSI Status and sense data on a
SCSI command basis. In addition to the sense values listed below, the decoder
may return other sense values which relate to playback status and MPEG error
reporting. Refer to “Error Reporting,” page 135.
SCSI Status
Check Condition
Sense Key
6h
Additional Sense Code and Qualifier
2900h
SCSI Status
Check Condition
Sense Key
2h
Additional Sense Code and Qualifier
0401h
Содержание CineCast 2000-0422
Страница 4: ......
Страница 10: ......
Страница 14: ......
Страница 59: ...Chapter 1 Getting Started 45 Customer Support Figure 1 20 CineCast Quad Pro Decoder Chassis Layout...
Страница 61: ...Chapter 1 Getting Started 47 Customer Support Figure 1 22 Quad Pro Connector Panel...
Страница 63: ...Chapter 1 Getting Started 49 Customer Support Figure 1 24 Typical Audio Cable Pinouts Balanced...
Страница 163: ...Chapter 3 The Video Playback Controller 149 Figure 3 4 Playlist Open Files Window Figure 3 5 Playlist Save As Window...
Страница 196: ......