Kontron AM4904, Руководство пользователя

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Functional Description
8 AM4904 User Guide
www.kontron.com
2.2 MicroTCA Carrier Management Controller
The AM4904 supports a processor unit which can operate as only MCMC or as MCMC/CM Software. These two
modes are described in this section.
The MCMC operates with the following building blocks which are detailed below:
• Unit computer PowerPC 405EX
• DDR2 Memory
• NOR Flash
• NAND Flash
• Dual GE PHY
• FPGA
• I2C EEPROM
• Real Time Clock (RTC)
• Serial Management
• FE Management
2.2.1 Unit Computer PowerPC 405EX
One of the main components of the MCMC is the PowerPC 405EX. The following list sets out the key features of
the PPC 405EX:
• PowerPC 405EX runs at 600MHZ core frequency without security feature (option -N)
• UART 1 to Front, RX, TX
• SPI to FPGA (reserved for optional FPGA update procedure)
• DDR2 SDRAM controller operates at 200MHz/400Mbps with ECC
• PCIe Port 0 lane 0 connects to Ethernet Switch
• PCIe Port 1 lane 0 connects to other MCH via XOVER0/2
• Dual Ethernet MAC operates in RGMII mode and connects to Front Management port and On-Board
Switch
• EBC interface connects to FPGA and NOR/NAND Flash
• 1 PPS reference pulse input (GPIO) and timer reference clock input (TMRCLK) from either RTC or Telco
PLL via FPGA
The PPC 405EX unit computer does not only implement the MCMC functionality but also hosts the GbE switch
management and controls the clocking subsystem.
2.2.2 DDR2 Memory
Five DDR2 Memory modules work with the PowerPC 405EX. The key features of this Memory modules are:
• 512MB, 1024MB or 2048MB DDR2 Memory support with ECC (512MB is the standard memory size)
• 400Mbps double data rate with CAS latency of 2, 2.5 and 3