Source/Destination Id (Sdid) R/W; Selection Timeout Counter (Sltime) R/W - Epson S1R72105 Technical Manual

S1R72105 Technical Manual

7.3.37 Source/Destination ID (SDID) R/W

Sets both the SCSI-ID of the selector side and the target SCSI-ID when selection is made.
Address Register Name
2Fh SDID
In Initiator mode, sets the target SCSI-ID to be selected in DESTINATION ID.
When re-selection is received, the target SCSI-ID that makes a re-selection is set in SOURCE ID.
In Target mode, sets the initiator SCSI-ID to be re-selected in DESTINATION ID.
When selection is received, the initiator SCSI-ID that makes a selection is set in SOURCE ID.

7.3.38 Selection Timeout Counter (SLTIME) R/W

Sets time-out delay for selection and re-selection.
Address Register Name
30h SLTIME
The time-out delay value is calculated according to the following formula:
Delay value = count value × 2
Where T is an internal clock cycle (40MHz).
Detecting time-out causes the following operation of the IC:
Suspends output ID bit.
Negates XSSEL 4000×T×2 (about 200µs) after such suspension and outputs selection time-out interrupt.
No time-out is detected when this register is set to "0."
36
Bit Symbol
7: -
6: SID2
5: SID1
4: SID0
3: -
2: DID2
1: DID1
0: DID0
Bit Symbol
7: ST7
6: ST6
5: ST5
4: ST4
3: ST3
2: ST2
1: ST1
0: ST0
15
× T × 2
EPSON
Description
SOURCE ID[2] (R/W)
SOURCE ID[1] (R/W)
SOURCE ID[0] (R/W)
DESTINATION ID[2] (R)
DESTINATION ID[1] (R)
DESTINATION ID[0] (R)
Description
(MSB)
Selection Time out Counter
(MSB)
Rev.1.0