Bus Signal Timing
Table 9. Bus Operation Timings (continued)
33 MHz 40 MHz
Min Max Min Max Min Max Min Max
66 MHz
80 MHz
Num
Characteristic
Unit
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,
7.60
7.60
—
—
6.30
6.30
—
—
3.80
3.80
—
—
3.13
3.13
—
—
ns
ns
PTR output hold (MIN = 0.25 × B1)
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)
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)
—
—
13.80
13.80
—
—
12.50
12.50
—
—
10.00
10.00
—
—
9.43
9.43
ns
ns
BDIP, PTR valid (MAX = 0.25 × B1 + 6.3)
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)
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
7.60 13.80 6.30 12.50 3.80 10.00 3.13 9.43
ns
(MAX = 0.25 × B1 + 6.3)
B11 CLKOUT to TS, BB assertion
7.60 13.60 6.30 12.30 3.80 9.80 3.13 9.13
ns
ns
(MAX = 0.25 × B1 + 6.0)
B11a CLKOUT to TA, BI assertion (when driven 2.50 9.30 2.50 9.30 2.50 9.30 2.50 9.30
by the memory controller or PCMCIA
interface) (MAX = 0.00 × B1 + 9.30 1)
B12 CLKOUT to TS, BB negation
7.60 12.30 6.30 11.00 3.80 8.50 3.13 7.92
ns
ns
(MAX = 0.25 × B1 + 4.8)
B12a CLKOUT to TA, BI negation (when driven 2.50 9.00 2.50 9.00 2.50 9.00
by the memory controller or PCMCIA
2.5
9.00
interface) (MAX = 0.00 × B1 + 9.00)
B13 CLKOUT to TS, BB High-Z
7.60 21.60 6.30 20.30 3.80 14.00 3.13 12.93 ns
(MIN = 0.25 × B1)
B13a CLKOUT to TA, BI High-Z (when driven by 2.50 15.00 2.50 15.00 2.50 15.00 2.5 15.00 ns
the memory controller or PCMCIA
interface) (MIN = 0.00 × B1 + 2.5)
B14 CLKOUT to TEA assertion
2.50 9.00 2.50 9.00 2.50 9.00 2.50 9.00
ns
(MAX = 0.00 × B1 + 9.00)
B15 CLKOUT to TEA High-Z (MIN = 0.00 × B1 2.50 15.00 2.50 15.00 2.50 15.00 2.50 15.00 ns
+ 2.50)
B16 TA, BI valid to CLKOUT (setup time)
6.00
—
6.00
—
6.00
—
6
—
ns
(MIN = 0.00 × B1 + 6.00)
MPC885/MPC880 Hardware Specifications, Rev. 3
17
Freescale Semiconductor
FREESCALE [ Freescale ]
