Ultra37000 CPLD Family
f
I/O MACROCELL
FROM PTM
0
−
16
PRODUCT
TERMS
C25
0
1
FAST
SLEW
SLOW
0
P
D/T/L
O
Q
1
0
1
C4
DECODE
“0”
“1”
0
1
2
3
O
O
C26
I/O CELL
0
1
2
3
O
R
4
C0 C1 C24
1
0
C6 C5
C2 C3
BURIED MACROCELL
FROM PTM
0
−
16
PRODUCT
TERMS
C25
0
1
0
0
1
2
3
1
Q
C7
0
O
P
D/T/L
R
DECODE
Q
1
O
4
C0 C1 C24
1
0
C2 C3
FEEDBACK TO PIM
FEEDBACK TO PIM
FEEDBACK TO PIM
ASYNCHRONOUS
BLOCK RESET
4 SYNCHRONOUS CLOCKS (CLK0,CLK1,CLK2,CLK3)
ASYNCHRONOUS
1 ASYNCHRONOUS CLOCK(PTCLK)
BLOCK PRESET
OE0 OE1
Figure 2. I/O and Buried Macrocells
INPUT PIN
0
1
2
3
C12 C13
O
TO PIM
FROM CLOCK
POLARITY MUXES
0
1
2
3
C10 C11
D
O
Q
D
Q
D
LE
Q
Figure 3. Input Macrocell
Document #: 38-03007 Rev. *C
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