S2020/S2021 SOURCE DEVICE STATE MACHINES
Figure 2. S2020 Connect SM State Transition Diagram
HIPPI
"ND" + "RST"
"RST"
{LOSTDEST} 0
0 0 1
"RST"
"LD"
"ND"
{NODEST}
0 0 1
"ND"
"I"
FROM
3,4,5,
6-19, 20,
21, 22,
23, 24,
25, 26,
27
"RST"
1 0 1
"DR"
"I" + "DR"
{ABORT}
1 0 1
1 0 1
"CR" +
"C" +
"RDY"
{SRCERR}
1 0 1
"RST"
• "LD"
• "ND"
{CON16}
"RDY"
{TERMCON} 23
1 1 1
"I" +
"DR"
"DR"
1 0 1
26
{CONn}
1 0 1
24
{CON1}
5
"C"
{REQ}
"CR"
4
1
1 0 1
"ND"
{IDLE}
3
"I"
"RST"
"LD"
1 0 1
{INIT}
2
"DR" + "CR" + "C" + "RDY" + "RST
"I" + "DR"
"I" + "DR"
"I" +
"DR" +
"C" + "RDY"
"CR"
"RST" • "LD" • "ND"
"RDY"
{DSTERR}
"CR"
1 0 1
27
"RDY"
"C" + "RDY"
"C"
"CR"
6-19
{REJECT}
1 1 0
25
"CR"
"C"
"CR"
{ILLTERM}
1 0 1
"C" + "RDY"
"CR"
{CONNECTED} 21
1 1 1
"C" + "RDY"
"CR"
22
"I" + "DR"
"C" + "RDY"
"CR" +
"C" +
"RDY"
"I"
20
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