MPC857T Freescale Semiconductor, Inc, MPC857T Datasheet - Page 42

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

Bus Signal Timing
Table 12
42
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
Num
shows the reset timing for the MPC862/857T/857DSL.
CLKOUT to HRESET high impedance
(MAX = 0.00 x B1 + 20.00)
CLKOUT to SRESET high impedance
(MAX = 0.00 x B1 + 20.00)
RSTCONF pulse width
(MIN = 17.00 x B1)
—
Configuration data to HRESET rising
edge set up time
(MIN = 15.00 x B1 + 50.00)
Configuration data to RSTCONF rising
edge set up time
(MIN = 0.00 x B1 + 350.00)
Configuration data hold time after
RSTCONF negation
(MIN = 0.00 x B1 + 0.00)
Configuration data hold time after
HRESET negation
(MIN = 0.00 x B1 + 0.00)
HRESET and RSTCONF asserted to
data out drive (MAX = 0.00 x B1 + 25.00)
RSTCONF negated to data out high
impedance. (MAX = 0.00 x B1 + 25.00)
CLKOUT of last rising edge before chip
three-states HRESET to data out high
impedance. (MAX = 0.00 x B1 + 25.00)
DSDI, DSCK set up (MIN = 3.00 x B1)
DSDI, DSCK hold time
(MIN = 0.00 x B1 + 0.00)
SRESET negated to CLKOUT rising
edge for DSDI and DSCK sample
(MIN = 8.00 x B1)
MPC862/857T/857DSL PowerQUICC™ Family Hardware Specifications, Rev. 3
Characteristic
Table 12. Reset Timing
515.20
504.50
350.00
242.40
90.90
0.00
0.00
0.00
Min
—
—
—
—
—
—
33 MHz
20.00
20.00
25.00
25.00
25.00
Max
—
—
—
—
—
—
—
—
—
425.00
425.00
350.00
200.00
75.00
0.00
0.00
0.00
Min
—
—
—
—
—
—
40 MHz
20.00
20.00
25.00
25.00
25.00
Max
—
—
—
—
—
—
—
—
—
340.00
350.00
350.00
160.00
60.00
0.00
0.00
0.00
Min
—
—
—
—
—
—
50 MHz
20.00
20.00
25.00
25.00
25.00
Max
—
—
—
—
—
—
—
—
—
257.60
277.30
350.00
121.20
45.50
Freescale Semiconductor
0.00
0.00
0.00
Min
—
—
—
—
—
—
66 MHz
20.00
20.00
25.00
25.00
25.00
Max
—
—
—
—
—
—
—
—
—
Unit
ns
ns
ns
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns