Electronic Component Distributor. Source::Freescale Semiconductor
P.N:MPC8349CZUAGDB Desc:IC MPU POWERQUICC II PRO 672TBGA
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MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13
Freescale Semiconductor
9
Electrical Characteristics
Figure 3
shows the undershoot and overshoot voltage of the PCI interface of the MPC8349EA for the
3.3-V signals, respectively.
Figure 3. Maximum AC Waveforms on PCI Interface for 3.3-V Signaling
2.1.3
Output Driver Characteristics
Table 3
provides information on the characteristics of the output driver strengths. The values are
preliminary estimates.
2.2
Power Sequencing
This section details the power sequencing considerations for the MPC8349EA.
2.2.1
Power-Up Sequencing
MPC8349EA does not require the core supply voltage (V
DD
and AV
DD
) and I/O supply voltages (GV
DD
,
LV
DD
, and OV
DD
) to be applied in any particular order. During the power ramp up, before the power
Table 3. Output Drive Capability
Driver Type
Output Impedance
(
Ω
)
Supply
Voltage
Local bus interface utilities signals
40
OV
DD
= 3.3 V
PCI signals (not including PCI output clocks)
25
PCI output clocks (including PCI_SYNC_OUT)
40
DDR signal
18
GV
DD
= 2.5 V
DDR2 signal
18
36 (half-strength mode)
GV
DD
= 1.8 V
TSEC/10/100 signals
40
LV
DD
= 2.5/3.3 V
DUART, system control, I
2
C, JTAG, USB
40
OV
DD
= 3.3 V
GPIO signals
40
OV
DD
= 3.3 V,
LV
DD
= 2.5/3.3 V
Undervoltage
Waveform
Overvoltage
Waveform
11 ns
(Min)
+7.1 V
7.1 V p-to-p
(Min)
4 ns
(Max)
–3.5 V
7.1 V p-to-p
(Min)
62.5 ns
+3.6 V
0 V
4 ns
(Max)
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