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Product Specifications
CPU:
The Freescale MPC7448 RISC PowerPC microprocessor has an internal speed of up to 1.4 GHz and 166 MHz local bus speed. The MPC7448 includes 32 kilobytes separate level-one (L1) data and instruction caches and 1 megabyte L2 cache. Standard power supply is 3.3volts, with a configuration option for both 3.3 and 5 volts.System Controller/PCI Bridge:
The Marvell® MV64460 (Discovery™III) is a single-chip solution that provides one PCI-X bus, three integrated gigabit Ethernet Medium Access Control (MAC) controllers, two megabyte integrated Synchronous Random Access Memory (SRAM), four Independent Direct Memory Access (IDMA) engines and two XOR Direct Memory Access (DMA) engines. The 64-bit PCI interface can operate up to 66MHz (60X) or 133 MHz (PCI-X).SDRAM:
The PmPPC7448 includes a 32M x 72-bit Double Data Rate (DDR) Synchronous Dynamic Random Access Memory (SDRAM) Small-Outline Dual In-line Memory Module (SO-DIMM). Options include 256 megabytes, 512 megabytes, 1 gigabyte, and 2 gigabytes. The interface implements eight additional bits to permit the use of error-correcting code (ECC). The MV64460 bridge acts as the memory controller.Flash:
The PmPPC7448 includes Flash configuration options of 32 or 64 megabytes. The PmPPC7448 is capable of booting from either an 8-bit, 32-pin PLCC ROM socket on the Development Mezzanine Card (DMC) or from 32-bit soldered Flash (default).Serial I/O:
The PmPPC7448 includes up to two EIA-232 ports operating between 9600 and 115,200 baud. Serial port one is always routed to the Development Mezzanine Card (DMC) serial connector; build options include connections to the front panel serial connector, or the P14 connector. When routed to P14, the port has the option of either EIA-232 or TTL signaling levels. Serial port two is routed to P14 with the same signaling options.Ethernet:
The PmPPC7448 includes three Ethernet ports. Two Broadcom BCM5461S gigabit PHY devices route Ethernet (ports 0 and 1) through connector P14. The Micrel KSZ8721CL 10/100 PHY device routes Ethernet (port 2) through a mini-USB connector on the front panel. The Broadcom and Micrel devices are IEEE 802.3-compliant.CPLD:
The PmPPC7448 uses a Complex Programmable Logic Device (CPLD) to implement various memory-mapped registers and to control access to the Flash, ROM socket, and enumeration of Monarch/non-Monarch systems.RTC:
The real-time clock is an ST®Microelectronics M41T00 Serial Access Timekeeper®.
The Emerson PmPPC7448 module is a Processor PCI Mezzanine Card (PPMC). It is based on the Freescale® Semiconductor PowerPC™ MPC7448 central processor unit and provides additional processing power for the baseboard, which must be compatible with PPMC architecture. The PmPPC7448 module supports various memory configurations, programmable user Flash memory, a PCI bridge/controller, three Ethernet interfaces, two serial ports, as well as a real-time clock, and EEPROM.
The PmPPC7448 is compliant with the European Union’s RoHS (Restriction of Use of Hazardous Substances) directive created to limit harm to the environment and human health by restricting the use of harmful substances in electrical and electronic equipment. Effective July 1, 2006, RoHS restricts the use of six substances: cadmium (Cd), mercury (Hg), hexavalent chromium (Cr (VI)), polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs) and lead (Pb). Configurations that are RoHS compliant are built with lead-free solder.
The PmPPC7448 supports 256 megabyte, 512 megabyte, 1 gigabyte, and 2 gigabyte configurations of 72-bit wide SDRAM. This interface implements eight additional bits to permit the use of error-correcting code (ECC). A low profile, small-outline, dual inline memory module (SO-DIMM) is installed to reduce board density and routing constraints. A serial EEPROM on the module provides the serial presence detects (SPD). On-card SDRAM occupies physical addresses from 0000,000016 to 7FFF,FFFF16. The SDRAM is controlled by the MV64460 DRAM controller, which may be programmed for most memory sizes and speeds, various block sizes, and write protection. In addition to the basic SDRAM control functions, the MV64460 chip provides several additional DRAM-related functions and contains the following performance enhancing features:
• Supports page mode—minimizing SDRAM cycles on multiple transactions to the same
SDRAM page and can be configured to support up to 16 simultaneously opened pages.
• Supports error-correcting code (ECC) and read-modify-write (RMW) in the case of
partial writes (smaller than 64-bit) to DRAM.
• ECC provides single bit correction and two bits detection
The PmPPC7448 is a PowerPC-based Processor PMC (PCI Mezzanine Card) originally produced by Emerson Network Power (now Artesyn). It provides localized computing horsepower for embedded applications in communication systems, protocol processing, and industrial I/O management.
Alternative Part No. PmPPC-7448, PmPPC7448, pmPPC-7448 10005277
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