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