
MPC885/MPC880 PowerQUICC Hardware Specifications, Rev. 7
18
Freescale Semiconductor
Bus Signal Timing
B5
CLKOUT fall time
—
4.00
—
4.00
—
4.00
—
4.00
ns
B7
CLKOUT to A(0:31), BADDR(28:30), RD/WR,
BURST, D(0:31) output hold (MIN = 0.25
× B1)
7.60
—
6.30
—
3.80
—
3.13
—
ns
B7a
CLKOUT to TSIZ(0:1), REG, RSV, BDIP, PTR
output hold (MIN = 0.25
× B1)
7.60
—
6.30
—
3.80
—
3.13
—
ns
B7b
CLKOUT to BR, BG, FRZ, VFLS(0:1), VF(0:2)
IWP(0:2), LWP(0:1), STS output hold
(MIN = 0.25
× B1)
7.60
—
6.30
—
3.80
—
3.13
—
ns
B8
CLKOUT to A(0:31), BADDR(28:30) RD/WR,
BURST, D(0:31) valid (MAX = 0.25
× B1 + 6.3)
—
13.80
—
12.50
—
10.00
—
9.43
ns
B8a
CLKOUT to TSIZ(0:1), REG, RSV, AT(0:3) BDIP,
PTR valid (MAX = 0.25
× B1 + 6.3)
—
13.80
—
12.50
—
10.00
—
9.43
ns
B8b
CLKOUT to BR, BG, VFLS(0:1), VF(0:2),
IWP(0:2), FRZ, LWP(0:1), STS valid
4(MAX = 0.25
× B1 + 6.3)
—
13.80
—
12.50
—
10.00
—
9.43
ns
B9
CLKOUT to A(0:31), BADDR(28:30), RD/WR,
BURST, D(0:31), TSIZ(0:1), REG, RSV, AT(0:3),
PTR High-Z (MAX = 0.25
× B1 + 6.3)
7.60
13.80
6.30
12.50
3.80
10.00
3.13
9.43
ns
B11
CLKOUT to TS, BB assertion
(MAX = 0.25
× B1 + 6.0)
7.60
13.60
6.30
12.30
3.80
9.80
3.13
9.13
ns
B11a
CLKOUT to TA, BI assertion (when driven by the
memory controller or PCMCIA interface)
(MAX = 0.00
× B1 + 9.301)
2.50
9.30
2.50
9.30
2.50
9.30
2.50
9.30
ns
B12
CLKOUT to TS, BB negation
(MAX = 0.25
× B1 + 4.8)
7.60
12.30
6.30
11.00
3.80
8.50
3.13
7.92
ns
B12a
CLKOUT to TA, BI negation (when driven by the
memory controller or PCMCIA interface)
(MAX = 0.00
× B1 + 9.00)
2.50
9.00
2.50
9.00
2.50
9.00
2.5
9.00
ns
B13
CLKOUT to TS, BB High-Z (MIN = 0.25
× B1)
7.60
21.60
6.30
20.30
3.80
14.00
3.13
12.93
ns
B13a
CLKOUT to TA, BI High-Z (when driven by the
memory controller or PCMCIA interface)
(MIN = 0.00
× B1 + 2.5)
2.50
15.00
2.50
15.00
2.50
15.00
2.5
15.00
ns
B14
CLKOUT to TEA assertion
(MAX = 0.00
× B1 + 9.00)
2.50
9.00
2.50
9.00
2.50
9.00
2.50
9.00
ns
B15
CLKOUT to TEA High-Z (MIN = 0.00
× B1 + 2.50) 2.50 15.00 2.50 15.00 2.50 15.00 2.50 15.00
ns
B16
TA, BI valid to CLKOUT (setup time)
(MIN = 0.00
× B1 + 6.00)
6.00
—
6.00
—
6.00
—
6
—
ns
B16a
TEA, KR, RETRY, CR valid to CLKOUT (setup
time) (MIN = 0.00
× B1 + 4.5)
4.50
—
4.50
—
4.50
—
4.50
—
ns
Table 9. Bus Operation Timings (continued)
Num
Characteristic
33 MHz
40 MHz
66 MHz
80 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max