MPC8349E-MITXE Freescale Semiconductor, MPC8349E-MITXE Datasheet - Page 4

BOARD REFERENCE FOR MPC8349

MPC8349E-MITXE

Manufacturer Part Number
MPC8349E-MITXE
Description
BOARD REFERENCE FOR MPC8349
Manufacturer
Freescale Semiconductor
Series
PowerQUICC II™ PROr
Type
MPUr
Datasheets

Specifications of MPC8349E-MITXE

Contents
Module and Misc Hardware
Processor To Be Evaluated
MPC8349E
Interface Type
Ethernet, USB
Silicon Manufacturer
Freescale
Core Architecture
Power Architecture
Core Sub-architecture
PowerQUICC
Silicon Core Number
MPC83xx
Silicon Family Name
PowerQUICC II PRO
Rohs Compliant
Yes
For Use With/related Products
MPC8349E
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MPC8349E-MITXE
MPC8349E-mITXE Board
1.2
The board-level functions discussed in this section are reset, interrupts, and clock distribution.
1.2.1
The MPC8349E-mITXE reset module generates a single reset to reset the MPC8349E and other
peripherals on the board. The reset unit provides power-on reset, hard reset, and soft reset signals in
compliance with the MPC8349E hardware specification.
4
Hard reset is generated either by the COP/JTAG port or the MPC8349E.
Power-on reset is generated by the Maxim MAX811 device. When MR is deasserted and 3.3 V is
ready, the MAX811 internal timeout guarantees a minimum reset active time of 150 ms before
PORESET is deasserted. This circuitry guarantees a 150 ms PORESET pulse width after 3.3 V
reaches the right voltage level, and this meets the specification of the PORESET input of
MPC834x.
COP/JTAG port reset provides convenient hard-reset capability for a COP/JTAG controller. The
RESET line is available at the COP/JTAG port connector. The COP/JTAG controller can directly
generate the hard-reset signal by asserting this line low.
Push button reset interfaces the MR signal with a debounce capability to produce a manual master
reset of the processor card.
Soft reset is generated by the COP/JTAG port. Assertion of SRESET causes the MPC8349E to
abort all current internal and external transactions and set most registers to their default values.
HRESET from COP
SRESET from COP
TRST from COP
Board-Level Functions
Reset and Reset Configurations
MPC8349E-mITXE Reference Design Platform User’s Guide, Rev. 2
Figure 2. Reset Circuitry of the MPC8349E
3.3 V
MR
Preliminary—Subject to Change Without Notice
Push Button
MAX811
GND
Figure 2
PORESET to MPC8349E
Flash
shows the reset circuitry.
SRESET to MPC8349E
TRST to MPC8349E
10/100/1000 PHY
USB PHYs
CF-CARD
MPC8349E
Freescale Semiconductor

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