S1R72105 Technical Manual
38
EPSON
Rev.1.0
7.3.42 SCSI Command (COMMAND) R/W
Sets SCSI control commands.
Address
Register Name
Bit Symbol
Description
34h COMMAND
7:
CMD7
(MSB)
6:
CMD6
5:
CMD5
4: CMD4
SCSI Command
3:
CMD3
2:
CMD2
1:
CMD1
0:
CMD0
(LSB)
For details of each command, refer to section “7.4 SCSI Control Commands.”
7.3.43 Test (TEST) R
Used for testing an LSI. Basically, writing into this register is inhibited.
Address
Register Name
Bit Symbol
Description
3Eh TEST
7:
TM2
-
6:
TM1
-
5:
TM0
-
4:
USEL1
-
3:
USEL0
-
2:
OFST
-
1:
SCBC
-
0:
DMBC
-
7.3.44 Revision Reg.(REVISION) R
Shows the revision No. of the IC.
Address
Register Name
Bit Symbol
Description
3Fh REVISION
7:
REV7
(MSB)
6:
REV6
5:
REV5
4:
REV4
REVISION
3:
REV3
2:
REV2
1:
REV1
0:
REV0
(LSB)
In normal Read mode, the register allows to read out the revision No. of this model.
The model name SPC number (72h, 15h) can be read by reading out twice after writing any value.
