MPC8313E-RDBC Freescale Semiconductor, MPC8313E-RDBC Datasheet - Page 8

• Manufacturer Part Number: MPC8313E-RDBC
• Description: BOARD CPU 8313E VER 2.2
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8313E-RDBC

• Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: MPC8313E

Board-Level Functions
2.1
The MPC8313E RDB reset module generates a single reset to the MPC8313E and other peripherals on the
board. The reset unit provides power-on reset, hard reset, and soft reset signals in compliance with the
MPC8313E hardware specification.
Figure 4
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Hard reset is generated either by the COP/JTAG port or the MPC8313E.
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, which meets the specification of the PORESET input of
MPC8313E.
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 using the MR signal with debounce capability to produce a manual
master reset of the RDB.
Soft reset is generated by the COP/JTAG port. Assertion of SRESET causes the MPC8313E to
abort all current internal and external transactions and set most registers to their default values.
HRESET from COP
shows the reset circuitry. Note the following:
SRESET from COP
TRST from COP
Reset and Reset Configurations
PowerQUICC™ MPC8313E Reference Design Board (RDB), Rev. 4
Figure 4. Reset Circuitry of the MPC8313E
3.3 V
MR
Push Button
MAX811
GND
PORESET to MPC8313E
NOR FLASH
SRESET to MPC8313E
TRST to MPC8313E
L2 Switch
Marvell PHY
Reset config logic
MPC8313E
Freescale Semiconductor