MPC8280 Motorola, MPC8280 Datasheet - Page 19

• Manufacturer Part Number: MPC8280
• Description: PowerQUICC II Family Hardware Specifications
• Manufacturer: Motorola

1
6.2
Table 11 lists SIU input characteristics.
MOTOROLA
Spec Number
Setup Hold
sp11a
sp13a
sp14a
sp11
sp12
sp13
sp14
sp15
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.
sp10 AACK/TA/TS/DBG/BG/BR
sp10 ARTRY/ TEA
sp10 Data bus in normal mode
sp10 Data bus in ECC and PARITY modes
sp10 Pipeline mode—
sp10 DP pins
sp10 Pipeline mode—DP pins
sp10 All other pins
SIU AC Characteristics
Data bus in ECC and PARITY modes
The CLKIN input to the MPC8280 should not exceed +/– 150 psec. This
represents total input jitter—the combination of short term (peak-to-peak)
and long term (cumulative). The duty cycle of CLKIN should not exceed
the ratio of 40:60.
The MPC8280 meets the timing requirements of PCI Specification
Revision 2.2. Refer to Sections 7.2 and 7.3 and “Note: Tval (Output Hold)”
to determine if a specific clock configuration is compliant.
MPC8280 PowerQUICC II™ Family Hardware Specifications
Characteristic
Table 11. AC Characteristics for SIU Inputs
NOTE: CLKIN Jitter and Duty Cycle
NOTE: PCI AC Timing
66 MHz
—
6
6
5
7
5
7
5
83 MHz 100 MHz 66 MHz
Setup
5
5
4
5
4
5
4
4
3.5
3.5
3.5
2.5
3.5
2.5
3.5
4
Value (ns)
AC Electrical Characteristics
1
0.5
0.5
0.5
0.5
0.5
0.5
0.5
—
83 MHz 100 MHz
Hold
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
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