
P5040/P5020 Reference Design Board User Guide, Rev. 0
6
Freescale Semiconductor
Evaluation Support
4.2
Reference Design Board Use
In the absence of a special hardware or software configuration, the P5040/P5020 reference design board
operates identically to a development/evaluation system.
4.3
Embedded Use
Section 6.1, “Configuration Options
,” and
Section 6.2, “Configuration Modes
,” provide the FPGA and
external configuration switch settings used for start-up configuration information for U-Boot or Linux
when the system is used as an embedded platform.
4.4
Difficult-to-Find P5040/P5020 Connections
Table 2. P5040/P5020RDB device Interfaces
Device Feature
Configuration Options
SerDes
• Connect to PCI Express 2.0 x1 and x4 slots for use with graphics or other PEX cards
• Test via PCI Express card (typically graphics) or Catalyst™ PCI Express control/monitoring card
DDR3
• Memory controller capable of supporting DDR3 and DDR3-LV devices.
• Provides 2 SODIMM slots with one DDR3 8GB 204-pin 1.35/1.5v SODIMM module at 1333/1600 Mbps
data rate at 72-bit, and ECC support.
eSDHC
SDMedia card and MMC card
SPI
Supports standard 128Kbyte(2 MHz, 1.8V) and 16MB (100 MHz)
Local bus
• Connects 8bit data and 10bit address to system control FPGA to access programming model to configure
system: Internal debug
Serial
UART supports two 4-wire serial ports
I
2
C
I
2
C bus #1 can be used for the following:
• Boot initialization code
• System EEPROM (MAC address storage, serial number, and so on)
• Fiber optic mode for XAUI ports 1 and 2
I
2
C bus #2 can be used for the following:
• DDR SODIMM SPD
I
2
C bus #4 can be used for the following:
• System RTC clock and CPU Thermal monitorl
Clocking
• SerDes clock generator for XAUI PHY, SGMII PHY,and PCI Express slots
• RMII clock and buffers
GPIO
Eight GPIOs are connected FPGA for future usage
IRQs
EVENT switch normally asserts IRQ* but can drive SRESET0, and/or SRESET1 via software setting
Power
1U power supply to P5040/P5020 connector VCC_12, VCC_5_STBY, VCC_RTC_BAT