Bus Signal Timing
Table 9-6. Bus Operation Timings (continued)
33 MHz
40 MHz
50 MHz
66 MHz
Num
Characteristic
Unit
Min
Max
Min
Max
Min
Max
Min
Max
B30c WE(0:3) negated to A(0:31),
BADDR(28:30) invalid GPCM write
access, TRLX = 0, CSNT = 1.
8.36
—
6.38
31.38
1.50
—
4.50
24.50
1.50
—
2.68
17.83
1.50
—
ns
CS negated to A(0:31) invalid GPCM
write access, TRLX = 0, CSNT = 1,
ACS = 10, ACS = 11, EBDF = 1
B30d WE(0:3) negated to A(0:31),
BADDR(28:30) invalid GPCM write
access, TRLX = 1, CSNT =1.
38.67
—
—
—
—
ns
CS negated to A(0:31) invalid GPCM
write access TRLX = 1, CSNT = 1,
ACS = 10, or ACS = 11, EBDF = 1
B31 CLKOUT falling edge to CS valid—as 1.50
requested by control bit CST4 in the
corresponding word in UPM
6.00
6.00
6.00
6.00
ns
B31a CLKOUT falling edge to CS valid—as 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns
requested by control bit CST1 in the
corresponding word in UPM
B31b CLKOUT rising edge to CS valid—as 1.50
requested by control bit CST2 in the
corresponding word in UPM
8.00
1.50
8.00
1.50
8.00
1.50
8.00
ns
B31c CLKOUT rising edge to CS valid—as 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.04 ns
requested by control bit CST3 in the
corresponding word in UPM
B31d CLKOUT falling edge to CS valid—as 13.26 17.99 11.28 16.00 9.40 14.13 7.58 12.31 ns
requested by control bit CST1 in the
corresponding word in UPM, EBDF =
1
B32 CLKOUT falling edge to BS valid—as 1.50
requested by control bit BST4 in the
corresponding word in UPM
6.00
1.50
6.00
1.50
6.00
1.50
6.00
ns
B32a CLKOUT falling edge to BS valid—as 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns
requested by control bit BST1 in the
corresponding word in UPM, EBDF =
0
B32b CLKOUT rising edge to BS valid—as 1.50
requested by control bit BST2 in the
corresponding word in UPM
8.00
1.50
8.00
1.50
8.00
1.50
8.00
ns
B32c CLKOUT rising edge to BS valid—as 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns
requested by control bit BST3 in the
corresponding word in UPM
B32d CLKOUT falling edge to BS valid—as 13.26 17.99 11.28 16.00 9.40 14.13 7.58 12.31 ns
requested by control bit BST1 in the
corresponding word in UPM, EBDF =
1
18
MPC860 Family Hardware Specifications
MOTOROLA
MOTOROLA [ MOTOROLA ]
