5-14
SCSI SCRIPTS Instruction Set
5.2.3 Third Dword
This section describes the structure of the third SCSI SCRIPTS Dword.
Figure 5.4
Block Move Instruction - Third Dword
Start Address
[63:32]
This 32-bit field specifies the upper Dword of a 64-bit
starting address of data to move to/from memory. This
field is copied to the
register. The EN64DBMV bit in the
register must be set for this
Dword to be fetched.
5.3 I/O Instructions
This section contains information about the I/O Instruction register. It is
divided into First Dword and Second Dword.
5.3.1 First Dword
This section describes the first Dword of the I/O Instruction register.
Figure 5.5
First 32-bit Word of the I/O Instruction
IT[1:0]
Instruction Type - I/O Instruction
[31:30]
OPC[2:0]
Opcode
[29:27]
The following Opcode bits have different meanings,
depending on whether the LSI53C1000 is operating in
the initiator or target mode. Opcode selections 0b101–
0b111 are considered Read/Write instructions, and are
described in
Section 5.4, “Read/Write Instructions.”
31
24 23
16 15
8
7
0
DBMS Register
31 30 29
27 26 25 24 23
20 19
16 15
11 10
9
8 7
6
5 4
3
2
0
DCMD Register
DBC Register
IT[1:0] OPC[2:0] RA TI Sel
R
ENDID[3:0]
R
CA TM
R
A
R
ATN
R
0
1
x
x
x
x
x
x
0
0
0
0
x
x
x
x
0
0
0
0
0
x
x
0 0
x
0 0
x
0
0
0
Содержание LSI53C1000
Страница 6: ...vi Preface...
Страница 16: ...xvi Contents...
Страница 28: ...1 12 Introduction...
Страница 234: ...4 124 Registers...
Страница 314: ...6 40 Specifications This page intentionally left blank...
Страница 318: ...6 44 Specifications This page intentionally left blank...
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Страница 350: ...6 76 Specifications Figure 6 42 LSI53C1000 329 Ball Grid Array Bottom view...
Страница 352: ...6 78 Specifications...
Страница 360: ...A 8 Register Summary...
Страница 376: ...IX 12 Index...