Philips Semiconductors Programmable Logic Devices
Programmable logic sequencer
(16 × 45 × 12)
Product specification
PLS159A
“OR” ARRAY – (Qn = J-K Type)
Tn
Tn
Tn
Tn
J
Q
J
Q
J
Q
J
Q
M = DISABLED
M = DISABLED
M = DISABLED
M = DISABLED
K
K
K
K
ACTION
TOGGLE
CODE
O
“OR” ARRAY – (S or B)
ACTION
SET
CODE
H
ACTION
RESET
CODE
L
“EX-OR” ARRAY – (B)
ACTION
HOLD
CODE
–
Tn
Tn
S
B
S
B
S, B
S, B
Tn STATUS
ACTIVE1
CODE
A
“OE” ARRAY – (E)
OE
Tn STATUS
INACTIVE
CODE
•
OE
POLARITY
LOW1
CODE
L
POLARITY
HIGH
CODE
H
OE
OE
En
En
En
ACTION
IDLE1, 4
CODE
O
ACTION
CONTROL
CODE
A
ACTION
ENABLE4
CODE
•
ACTION
DISABLE
NOTES:
1. This is the initial unprogrammed state of all link pairs. It is normally associated with all unused (inactive) AND gates.
2. Any gate (T, FC, L, P, R, D)n will be unconditionally inhibited if both of the I, B, or Q links are left intact.
3. To prevent oscillations, this state is not allowed for C link pairs coupled to active gates Tn, FC.
4. En = O and En = • are logically equivalent states, since both cause Fn outputs to be unconditionally enabled.
5. These states are not allowed for control gates (L, P, R, D)n due to their lack of “OR” array links.
En
CODE
–
October 22, 1993
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