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P5040/P5020 Reference Design Board User Guide, Rev. 0
Freescale Semiconductor
3
Features
— 1588 header—support is TBD
— Aurora debug port
•
Other functions routed to reference board devices are as follows:
— Local bus
– 128-Mbyte NOR Flash contains Uboot firmware.
– 4 Gigabit NOR Flash is used for Freescale debug purposes. The user may access this using
their own developed software.
— eSDHC
– Connects to SDMedia card slot for boot code or mass storage
— SPI
– 16-Mbyte EEPROM module for boot code and storage
— I
2
C
– Three I
2
C controllers from P5040 and P5020
– I
2
C1 to RCW/Boot Sequencer and System configuration EEPROMs, XAUI SFP+ ports 1
and 2
– I
2
C2 to DDR slots’ SPD
– I
2
C3 to system real time clock and CPU Thermal Monitor
— Debug features
– Legacy COP/JTAG and USBTAP headers for use with CodeWarrior software
– Aurora Debug connector
•
System logic FPGA—other functions
— FPGA manages power sequencing
— Programming model with registers accessible via local bus
•
SerDes clock for PCIe slots and XAUI PHY
•
Power supplies
— Power is supplied to the reference board via a standard 1U 450W power supply
— Power is supplied via +12 V pins, VCC_RTC=3.3 V, and VCC_5V_stby = 5 V on the COM
Express connectors
— 2.5-V power for RMII Ethernet PHY