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16
MPC860 Family Hardware Specifications
MOTOROLA
Bus Signal Timing
B22c CLKOUT falling edge to CS asserted
GPCM ACS = 11, TRLX = 0,
EBDF = 1
10.86
17.99
8.88
16.00
7.00
14.13
5.18
12.31
ns
B23
CLKOUT rising edge to CS negated
GPCM read access, GPCM write
access ACS = 00, TRLX = 0, and
CSNT = 0
2.00
8.00
2.00
8.00
2.00
8.00
2.00
8.00
ns
B24
A(0:31) and BADDR(28:30) to CS
asserted GPCM ACS = 10, TRLX = 0
5.58
—
4.25
—
3.00
—
1.79
—
ns
B24a A(0:31) and BADDR(28:30) to CS
asserted GPCM ACS = 11, TRLX = 0
13.15
—
10.50
—
8.00
—
5.58
—
ns
B25
CLKOUT rising edge to OE, WE(0:3)
asserted
—
9.00
—
9.00
—
9.00
—
9.00
ns
B26
CLKOUT rising edge to OE negated
2.00
9.00
2.00
9.00
2.00
9.00
2.00
9.00
ns
B27
A(0:31) and BADDR(28:30) to CS
asserted GPCM ACS = 10, TRLX = 1
35.88
—
29.25
—
23.00
—
16.94
—
ns
B27a A(0:31) and BADDR(28:30) to CS
asserted GPCM ACS = 11, TRLX = 1
43.45
—
35.50
—
28.00
—
20.73
—
ns
B28
CLKOUT rising edge to WE(0:3)
negated GPCM write access
CSNT = 0
—
9.00
—
9.00
—
9.00
—
9.00
ns
B28a CLKOUT falling edge to WE(0:3)
negated GPCM write access
TRLX = 0, CSNT = 1, EBDF = 0
7.58
14.33
6.25
13.00
5.00
11.75
3.80
10.54
ns
B28b CLKOUT falling edge to CS negated
GPCM write access TRLX = 0, CSNT
= 1, ACS = 10, or ACS = 11, EBDF =
0
—
14.33
—
13.00
—
11.75
—
10.54
ns
B28c CLKOUT falling edge to WE(0:3)
negated GPCM write access
TRLX = 0, CSNT = 1 write access
TRLX = 0, CSNT = 1, EBDF = 1
10.86
17.99
8.88
16.00
7.00
14.13
5.18
12.31
ns
B28d CLKOUT falling edge to CS negated
GPCM write access TRLX = 0, CSNT
= 1, ACS = 10, or ACS = 11, EBDF =
1
—
17.99
—
16.00
—
14.13
—
12.31
ns
B29
WE(0:3) negated to D(0:31), DP(0:3)
High-Z GPCM write access
CSNT = 0, EBDF = 0
5.58
—
4.25
—
3.00
—
1.79
—
ns
B29a WE(0:3) negated to D(0:31), DP(0:3)
High-Z GPCM write access,
TRLX = 0, CSNT = 1, EBDF = 0
13.15
—
10.5
—
8.00
—
5.58
—
ns
Table 9-6. Bus Operation Timings (continued)
Num
Characteristic
33 MHz
40 MHz
50 MHz
66 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max