MPC8247 MOTOROLA [Motorola, Inc], MPC8247 Datasheet - Page 19

• Manufacturer Part Number: MPC8247
• Description: MPC8272 PowerQUICC II Family Hardware Specifications
• Manufacturer: MOTOROLA [Motorola, Inc]

1
1
2
AC Electrical Characteristics
AC Electrical Characteristics
6.2
Table 11 lists SIU input characteristics.
Table 12 lists SIU output characteristics.
Figure 9 shows the interaction of several bus signals.
19
Spec Number
Setup Hold
sp11a
Spec Number
sp11
sp12
sp13
sp15
sp31
sp32
sp33
sp34
sp35
Max
Input specifications are measured from the 50% level of the signal to the 50% level of the rising edge of CLKIN. Timings
are measured at the pin.
Output specifications are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal.
Timings are measured at the pin.
To achieve 1 ns of hold time at 66.67/83.33/100 MHZ, a minimum loading of 20 pF is required.
sp10 AACK/TA/TS/DBG/BG/BR
sp10 ARTRY/ TEA
sp10 Data bus in normal mode
sp10 Data bus in pipeline mode
sp10 All other pins
sp30
sp30
sp30
sp30
sp30
Min
SIU AC Characteristics
PSDVAL/TEA/TA
ADD/ADD_atr./BADDR/CI/GBL/WT
Data bus
Memory controller signals/ALE
All other signals
The MPC8272 meets the timing requirements of PCI Specification
Revision 2.2. Refer to Section 7, “Clock Configuration Modes” and “Note:
Tval (Output Hold)” to determine if a specific clock configuration is
compliant.
Activating data pipelining (setting BRx[DR] in the memory controller)
improves the AC timing.
MPC8272 PowerQUICC II™ Family Hardware Specifications
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
2
Freescale Semiconductor, Inc.
Table 12. AC Characteristics for SIU Outputs
Characteristic
Table 11. AC Characteristics for SIU Inputs
Characteristic
For More Information On This Product,
Go to: www.freescale.com
NOTE: PCI AC Timing
NOTE
MHz
MHz
6.5
66
66
7
8
6
6
6
6
5
5
5
Maximum Delay
Setup
MHz
MHz
6.5
6.5
5.5
5.5
83
83
6
5
5
4
4
4
1
MHz
MHz
100
100
5.5
5.5
5.5
5.5
5.5
3.5
3.5
2.5
3.5
1
Value (ns)
Value (ns)
4
MHz
MHz
0.5
0.5
0.5
0.5
0.5
0.5
66
66
1
1
1
1
Minimum Delay
Hold
MHz
MHz
0.5
0.5
0.5
0.5
0.5
0.5
83
83
MOTOROLA
1
1
1
1
MHz
MHz
100
100
0.5
0.5
0.5
0.5
0.5
0.5
1
1
1
1