Datasheet

Fibre Channel Interface
1-106 C141-C008
START_1/START_2
1 sec max device dela
y
max drive dela
y
1 usec max enclosure dela
y
–PARALLEL ESI
–DSK_WR
SEL_6
–DSK_RD
SEL_5
D(0:3)
SEL_(0:3)
1 second max enclosure dela
y
–ENCL_ACK
SEL_4
–SEL_ID (0:3)
*1 *2 *3 *4 *5
5 ms
*1 Enclosure Services Processor negates START_1 and START_2 to indicate
that it is requesting communication with the SCSI device.
*2 SCSI device asserts –PARALLEL ESI to indicate it is ready to begin
communication with the Enclosure Services Processor.
*3 SCSI device determines that enclosure is SFF-8067 compliant by noting that
SEL_(0:3) bits have inverted and that SEL_6 and SEL_7 have the value that
the device is presenting.
*4 The Enclosure Services Processor asserts –ENCL_ACK to indicate it is ready
to begin communication with the SCSI device.
*5 The SCSI device negates –PARALLEL ESI to end the ESI transfer and
prepares for power removal. (This drive does not support this function.)
Figure 1.61 Prepare for removal
1.11.6.2 EIE operations
Following successful discovery of an EIE transfer request, the SCSI device
transfers an ESI command to the enclosure using the write and command phase
procedure. The contents of the command are defined in 1.11.6.3. The device
follows the command with a read phase procedure to retrieve the transfer request
information from the enclosure. The definition of the enclosure request is in
1.11.6.3.
If the enclosure is requesting information, the SCSI device sends an ESI
command with Send = 1 to indicate to the enclosure it is ready to transfer the
requested information. The command is followed by a write of the information
requested by the enclosure. This information is defined in 1.11.6.3. Following
the write, the device negates –Parallel ESI to end the operation. Figure 1.62 is a
summary of these operations.