MPC857T Freescale Semiconductor, Inc, MPC857T Datasheet - Page 17

• Manufacturer Part Number: MPC857T
• Description: Mpc857t Powerquicc Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
B11a CLKOUT to TA, BI assertion (when
B12a CLKOUT to TA, BI negation (when
B13a CLKOUT to TA, BI High-Z (when
B16a TEA, KR, RETRY, CR valid to
B16b BB, BG, BR, valid to CLKOUT (setup
Num
B8a CLKOUT to TSIZ(0:1), REG, RSV,
B8b CLKOUT to BR, BG, VFLS(0:1),
B11 CLKOUT to TS, BB assertion (MAX =
B12 CLKOUT to TS, BB negation (MAX =
B13 CLKOUT to TS, BB High-Z (MIN =
B14 CLKOUT to TEA assertion (MAX =
B15 CLKOUT to TEA High-Z (MIN = 0.00 x
B16 TA, BI valid to CLKOUT (setup time)
B17 CLKOUT to TA, TEA, BI, BB, BG, BR
B9
AT(0:3) BDIP, PTR valid (MAX = 0.25 x
B1 + 6.3)
VF(0:2), IWP(0:2), FRZ, LWP(0:1),
STS Valid
CLKOUT to A(0:31), BADDR(28:30),
RD/WR, BURST, D(0:31), DP(0:3),
TSIZ(0:1), REG, RSV, AT(0:3), PTR
High-Z (MAX = 0.25 x B1 + 6.3)
0.25 x B1 + 6.0)
driven by the memory controller or
PCMCIA interface) (MAX = 0.00 x B1
+ 9.30
0.25 x B1 + 4.8)
driven by the memory controller or
PCMCIA interface) (MAX = 0.00 x B1
+ 9.00)
0.25 x B1)
driven by the memory controller or
PCMCIA interface) (MIN = 0.00 x B1 +
2.5)
0.00 x B1 + 9.00)
B1 + 2.50)
(MIN = 0.00 x B1 + 6.00)
CLKOUT (setup time) (MIN = 0.00 x
B1 + 4.5)
time)
valid (hold time) (MIN = 0.00 x B1 +
1.00
7
)
6
5
)
(4MIN = 0.00 x B1 + 0.00)
MPC862/857T/857DSL PowerQUICC™ Family Hardware Specifications, Rev. 3
4
Characteristic
(MAX = 0.25 x B1 + 6.3)
Table 7. Bus Operation Timings (continued)
7.60
7.60
7.60
7.60
2.50
7.60
2.50
7.60
2.50
2.50
2.50
6.00
4.50
4.00
1.00
Min
33 MHz
13.80
13.80
13.80
13.60
12.30
21.60
15.00
15.00
Max
9.30
9.00
9.00
—
—
—
—
6.30
6.30
6.30
6.30
2.50
6.30
2.50
2.50
2.50
2.50
6.00
4.50
4.00
1.00
6.30
Min
40 MHz
12.50
12.50
12.50
12.30
11.00
20.30
15.00
15.00
Max
9.30
9.00
9.00
—
—
—
—
5.00
5.00
5.00
5.00
2.50
5.00
2.50
5.00
2.50
2.50
2.50
6.00
4.50
4.00
1.00
Min
50 MHz
11.30
11.30
11.30
11.00
19.00
15.00
15.00
Max
9.30
9.80
9.00
9.00
—
—
—
—
3.80
3.80
3.80
3.80
2.50
3.80
2.50
3.80
2.50
2.50
2.50
6.00
4.50
4.00
2.00
Min
66 MHz
Bus Signal Timing
10.00
10.00
10.00
11.30
14.00
15.00
15.00
Max
9.80
8.50
9.00
9.00
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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