CD1865 Datasheet, PDF (30/150 Pages) Intel Corporation – Intelligent Eight-Channel Communications Controller

CD1865 — Intelligent Eight-Channel Communications Controller
Figure 5. Internal Service Acknowledge Decision Tree
IDLE STATE (1)
ALL OUTPUTS INACTIVE
IF
INTERNAL_REQUEST
= ACTIVE
TRUE
REQUEST_ACTIVE STATE (2)
ASSERT REQUEST
FALSE
IF
IACKIN* = ACTIVE
AND
MATCH = YES
TRUE
KEEP_ACK STATE (4)
ASSERT INTERNAL_GRANT
FALSE
IF
IACKIN* = ACTIVE
AND
MATCH = NO
TRUE
IF
IACKIN* = ACTIVE
AND
MATCH = YES
FALSE
(This block is redundant. It is placed
here to emphasize that if there is no
match, nothing happens.)
TRUE
PASS_ACK STATE (3)
ASSERT IACKOUT*
FALSE
IF
FALSE
IACKIN* = INACTIVE
IF
IACKIN* = INACTIVE
FALSE
TRUE
TRUE
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Datasheet