PLC42VA12 Datasheet, PDF (11/20 Pages) NXP Semiconductors – CMOS programmable multi-function PLD 42 × 105 × 12

Philips Semiconductors Programmable Logic Devices
CMOS programmable multi-function PLD
(42 × 105 × 12)
Product specification
PLC42VA12
REGISTER SELECT OPTIONS (Continued)
P
R
F_C
P
R
P
R
FROM
OR ARRAY
D
CK
Q
FROM
AND ARRAY
CLOCK
OPTIONS
OMC
CONFIG.
OPTIONS
OUTPUT
CONTROL
OPTIONS
P
J
FROM
OR ARRAY
K
FROM
AND ARRAY
F_C = LOW
F_C = HIGH
R
CK
CLOCK
OPTIONS
OMC
Q
CONFIG.
OPTIONS
OUTPUT
CONTROL
OPTIONS
REGISTER MODE (D or JK)
DYNAMICALLY CONTROLLABLE
F_C CONTROL P-TERM
CODE
A
L or H
POLARITY OPTIONS (for Combinatorial I/O Configurations Only¹)
FROM
OR ARRAY
OMC CONFIG.
OPTIONS
OUTPUT SELECT
OPTIONS
M
FROM
OR ARRAY
POLARITY
ACTIVE-HIGH (NON-INVERTING)
CODE
H⁴
OMC CONFIG.
OPTIONS
OUTPUT CONTROL
OPTIONS
M
POLARITY
ACTIVE-LOW (INVERTING)
CODE
L⁴
Polarity Options
When an OMC is configured as a
Combinatorial I/O with Buried Register, the
polarity of the combinatorial path can be
programmed as Active-High or Active-Low. A
configurable EX-OR gate provides polarity
control.
If an OMC is configured as a Registered
Output, /Q is propagated to the output pin.
Note that either Q or /Q can be fedback to
the AND array by manipulating the feedback
logic equations. (TRUE or COMPLEMENT).
CLOCK OPTIONS
REGISTER SELECT OPTIONS
FROM
OR ARRAY
TO
AND ARRAY
D (OR J) CK
(K)
Q
REGISTER SELECT OPTIONS
CLK
CLK OPTIONS
EXTERNAL CLOCK
(FROM PIN 1)
OMC
CONFIG.
OPTIONS
OUTPUT
CONTROL
OPTIONS
CK
CLK OPTIONS
P-TERM CLOCK
CODE
A
CODE
•
Clock Options
In the unprogrammed state, all Output Macro
Cell clock sources are connected to the
External Clock pin (I₀/CLK pin 1). Each OMC
can be individually programmed such that its
P-term Clock (CK_n) is enabled, thus disabling
it from the External Clock and providing
event-driven clocking capability.
This feature supports multiple state machines,
clocked at several different rates, all on one
chip, or the ability to collect large amounts of
random logic, including 10 separately clocked
flip-flops.
FROM
OR ARRAY
TO
AND ARRAY
Notes on page 87.
D (OR J) CK
(K)
Q
October 22, 1993
OMC
CONFIG.
OPTIONS
OUTPUT
CONTROL
OPTIONS
83