SCD1284 datasheet(45/176 Pages) INTEL

45 / 176 page

IEEE 1284-Compatible Parallel Interface Controller — CD1284

Datasheet

Figure 7. Interrupt Generation Logic

FAILED NEG

(INVALID

EXTCODE)

[COMPATIBLE

MODE]

NSR=0x41

TERMINATION

[COMPATIBLE

MODE]

NSR=0x82

NEG-OK

NSR=0x86[EPP

MODE]{40}

NSR=0x88[RN MODE]

{00} NSR=0x8A[RB

MODE]{01}

NSR=0x8C[ECP w/o

RLE]{10}

NSR=0x8E[ECP w/

RLE]{30}

NEG-OK

NSR=0x89[RN ID REQUEST]{04}

NSR=0x8B[RB ID REQUEST]{05}

NSR=0x8D[ECP w/o RLE ID

REQUEST]{14}

NSR=0x8F[ECP w/ RLE ID

REQUEST]{34}

IDREQ

PCISR[1]

NEGCH

PCISR[5]

IDREQ

PCIER[1]

FAILED NEG

MODE NOT

ENABLED

[COMPATIBLE

MODE]

NSR=0x46 (EPP)

NSR=0x48 (RN)

NSR=0x49 (RN-ID)

NSR=0x4A (RB)

NSR=0x4B (RB-ID)

NSR=0x4C (ECP)

NSR=0x4D (ECP-ID)

NSR=0x4E (ECP-RLE)

NSR=0x4F (ECP-RLE-ID)

HOST-TIMEOUT

HOST HAS NOT RESPONDED

FOR OVER 1 SEC.)

[COMPATIBLE MODE]

NSR=0x22

INVALID/ImedTerm

HOST HAS VIOLATED

HANDSHAKING SEQUENCE

[COMPATIBLE MODE]

NSR=0x16 (EPP)

NSR=0x18 (RN)

NSR=0x19 (RN-ID)

NSR=0x1A (RB)

NSR=0x1B (RB-ID)

NSR=0x1C (ECP)

NSR=0x1D (ECP-ID)

NSR=0x1E (ECP-RLE)

NSR=0x1F (ECP-RLE-ID)

An immediate termination from the Host will

generate this interrupt

ID requests will fail if either the negotiation type or RID is

disabled in NER. Other negotiations will also fail if the

negotiation type is disabled.

KEY:[]=Currentmode

{ } = Interface extensibility request value (see IEEE1284

Spec. for more details)

(register name[x]) : x = bit #, that is PCIER[1] = PCIER, bit 1

NEGCH

PCIER[5]

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