Bus Signal Timing
Table 9-6. Bus Operation Timings (continued)
33 MHz
40 MHz
50 MHz
66 MHz
Unit
Num
Characteristic
Min
1.50
Max
Min
1.50
Max
Min
1.50
Max
Min
Max
B33 CLKOUT falling edge to GPL
valid—as requested by control bit
GxT4 in the corresponding word in
UPM
6.00
6.00
6.00
1.50
6.00
ns
B33a CLKOUT rising edge to GPL
valid—as requested by control bit
GxT3 in the corresponding word in
UPM
7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns
B34 A(0:31), BADDR(28:30), and D(0:31) 5.58
to CS valid—as requested by control
bit CST4 in the corresponding word in
UPM
—
—
—
—
—
—
—
4.25
10.50
16.75
4.25
—
—
—
—
—
—
—
3.00
8.00
—
—
—
—
—
—
—
1.79
5.58
9.36
1.79
5.58
9.36
1.79
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
B34a A(0:31), BADDR(28:30), and D(0:31) 13.15
to CS valid—as requested by control
bit CST1 in the corresponding word in
UPM
B34b A(0:31), BADDR(28:30), and D(0:31) 20.73
to CS valid—as requested by control
bit CST2 in the corresponding word in
UPM
13.00
3.00
B35 A(0:31), BADDR(28:30) to CS
valid—as requested by control bit
BST4 in the corresponding word in
UPM
5.58
B35a A(0:31), BADDR(28:30), and D(0:31) 13.15
to BS valid—as requested by control
bit BST1 in the corresponding word in
UPM
10.50
16.75
4.25
8.00
B35b A(0:31), BADDR(28:30), and D(0:31) 20.73
to BS valid—as requested by control
bit BST2 in the corresponding word in
UPM
13.00
3.00
B36 A(0:31), BADDR(28:30), and D(0:31) 5.58
to GPL valid—as requested by
control bit GxT4 in the corresponding
word in UPM
B37 UPWAIT valid to CLKOUT falling
6.00
1.00
7.00
—
—
6.00
1.00
—
—
6.00
1.00
—
—
6.00
1.00
—
—
ns
ns
9
edge
B38 CLKOUT falling edge to UPWAIT
9
valid
10
B39 AS valid to CLKOUT rising edge
—
—
7.00
7.00
—
—
7.00
7.00
—
—
7.00
7.00
—
—
ns
ns
B40 A(0:31), TSIZ(0:1), RD/WR, BURST, 7.00
valid to CLKOUT rising edge
MOTOROLA
MPC860 Family Hardware Specifications
19
MOTOROLA [ MOTOROLA ]
