MPC8308-RDB Freescale Semiconductor, MPC8308-RDB Datasheet - Page 7

• Manufacturer Part Number: MPC8308-RDB
• Description: BOARD REF DESIGN MPC8308
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8308-RDB

• Contents: Board, Cables, Documentation, Power Supply, Software
• Ethernet Connection Type: Serial to Ethernet
• Data Rate: 10 Mbps, 100 Mbps, 1000 Mbps
• Memory Type: DDR2, SDRAM
• Interface Type: HSSI
• Operating Voltage: 1.5 V
• Operating Current: 5 uA
• Maximum Power Dissipation: 1000 mW
• Operating Temperature Range: - 55 C to + 125 C
• Product: Modules
• For Use With/related Products: MPC8308
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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The board-level functions includes reset, external interrupts, clock distribution, DDR SDRAM controller,
local bus controller, I
10/100/1000 BaseT interface, dual RS-232 ports, PCI Express, and COP/JTAG.
2.1
The MPC8308_RDB reset module generates a single reset to the MPC8308 and other peripherals on the
board. The reset unit provides power-on reset, hard reset, and soft reset signals in compliance with the
MPC8308 hardware specification.
Micetek International Inc.
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Board-Level Functions
PORESET (Power-on reset) is generated by the Micrel MIC811 device. When MR is deasserted
and 3.3 V is ready, the MIC811 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
MPC8308. Push button reset interfaces the MR signal with debounce capability to produce a
manual master PORESET
PORESET (Power-on reset) is optionally generated by the MC9S08 MCU device by monitoring
the 3.3V voltage level
HRESET (Hard reset) is generated either by the MPC8308 or the COP/JTAG port.
COP/JTAG port reset provides convenient hard-reset capability for a COP/JTAG controller. The
HRESET 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. The arrangement shown in
the COP to independently assert HRESET or TRST, while ensuring that the MPC8308 can drive
HRESET as well.
Reset and Reset Configurations
2
C interfaces, SD memory card interface, USB interface, eTSEC1 and eTSEC2
PowerQUICC™ MPC8308_RDB User’s Guide, Rev. 3
Figure 3
shows the reset circuitry. Notice the following:
Board-Level Functions
Figure 3
allows
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