MPC8536-RDK Freescale Semiconductor, MPC8536-RDK Datasheet - Page 115

• Manufacturer Part Number: MPC8536-RDK
• Description: BOARD REF COMEXPRESS MPC8536
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536-RDK

• Contents: CSB1880, CSB1801, Cables, Documentation, Enclosure, Power Supply with cord
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 75
The AV
the power supplied to the PLL is filtered using a circuit similar to the one shown in following
effectiveness, the filter circuit is placed as closely as possible to the AV
as possible. The ground connection should be near the AV
followed by the 1-µF capacitor, and finally the 1 ohm resistor to the board supply plane. The capacitors are connected from
AV
should be kept short, wide and direct.
Note the following:
3.3
In all low power mode by default, all input and output pads remain driven as per normal functional operation. The inputs remain
enabled.
The exception is that in Deep Sleep mode, GCR[DEEPSLEEP_Z] can be used to tristate a subset of output pads, and disable
the receivers of input pads as defined in
for details.
3.4
Due to large address and data buses, and high operating frequencies, the device can generate transient power surges and high
frequency noise in its power supply, especially while driving large capacitive loads. This noise must be prevented from reaching
other components in the MPC8536E system, and the device itself requires a clean, tightly regulated source of power. Therefore,
it is recommended that the system designer place at least one decoupling capacitor at each V
and LV
GV
must be placed directly under the device using a standard escape pattern as much as possible. If some caps are to be placed
surrounding the part it should be routed with short and large trace to minimize the inductance.
Freescale Semiconductor
DD
DD
•
•
_SRDSn to the ground plane. Use ceramic chip capacitors with the highest possible self-resonant frequency. All traces
, and LV
DD
DD
AV
Signals on the SerDes interface are fed from the XV
shows the PLL power supply filter Circuit.
_SRDSn signals provides power for the analog portions of the SerDes PLL. To ensure stability of the internal clock,
pin of the device. These decoupling capacitors should receive their power from separate V
Pin States in Deep Sleep State
Decoupling Recommendations
DD
DD
should be a filtered version of SV
, and GND power planes in the PCB, utilizing short low impedance traces to minimize inductance. Capacitors
MPC8536E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
SnV
V
DD
DD
1. An 0805 sized capacitor is recommended for system initial bring-up
Figure 75. MPC8536E PLL Power Supply Filter Circuit
Figure 76. SerDes PLL Power Supply Filter Circuit
10 Ω
1.0 Ω
Table
1. See the MPC8536E PowerQUICC III Integrated Processor Reference Manual
2.2 µF
DD
2.2 µF
.
DD
1
GND
_SRDSn balls. The 0.003-µF capacitor is closest to the balls,
DD
GND
power plane.
Low ESL Surface Mount Capacitors
2.2 µF
2.2 µF
DD
_SRDSn balls to ensure it filters out as much noise
1
AV
0.003 µF
DD
DD
AV
Pin States in Deep Sleep State
Figure
, TV
DD -
DD
DD,
SRDS
76. For maximum
, BV
TV
DD
DD
, OV
, BV
DD
DD
, GV
, OV
DD
DD
115
,
,