AM53CF96JC datasheet(24/76 Pages) AMD

24 / 76 page

P R E L I M I N A R Y

AMD

Am53CF94/Am53CF96

Initiator Select without ATN Steps

Internal State

Interrupt Status

Explanation

Bits 2:0 (Hex)

Bits 7:0 (Hex)

Arbitration steps completed. Selection time-out occurred, then disconnected

Selection without

ATN steps fully executed

Sequence halted during command transfer due to premature phase change

(Target)

Arbitration and selection completed; sequence halted because Target failed to

assert command phase

Initiator Select with ATN Steps

Internal State

Interrupt Status

Explanation

Bits 2:0 (Hex)

Bits 7:0 (Hex)

Arbitration steps completed. Selection time-out occurred then disconnected

Selection with

ATN steps fully executed

Sequence halted during command transfer due to premature phase change;

some CDB bytes may not have been sent; check FIFO flags

Message out completed; sent one message byte with

ATN true, then released

ATN; sequence halted because Target failed to assert command phase after

message byte was sent

Arbitration and selection completed; sequence halted because Target did not

assert message out phase;

ATN still driven by ESC

Initiator Select with ATN3 Steps

Internal State

Interrupt Status

Explanation

Bits 2:0 (Hex)

Bits 7:0 (Hex)

Arbitration steps completed. Selection time-out occurred then disconnected

Selection with

ATN3 steps fully executed

Sequence halted during command transfer due to premature phase change;

some CDB bytes may not have been sent; check FIFO flags

One, two, or three message bytes sent; sequence halted because Target failed

to assert command phase after third message byte, or prematurely released

message out phase;

ATN released only if third message byte was sent

Arbitration and selection completed; sequence halted because Target failed to

assert message out phase;

ATN still driven by ESC

Initiator Select with ATN and Stop Steps

Internal State

Interrupt Status

Explanation

Bits 2:0 (Hex)

Bits 7:0 (Hex)

Arbitration steps completed. Selection time-out occurred then disconnected

Arbitration and selection completed; sequence halted because Target failed to

assert message out phase;

ATN still asserted by ESC

Message out completed; one message byte sent;

ATN on

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