Filter
Top Products
10006757-02 PmPPC7448 User’s Manual
1-1
Section 1
Overview
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, program-
mable user Flash memory, a PCI bridge/controller, three Ethernet interfaces, two serial
ports, as well as a real-time clock, and EEPROM.
COMPONENTS AND FEATURES
The following is a brief summary of the PmPPC7448 hardware components and features:
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 3.3
volts, 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-
megabit 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 66 MHz (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 inter-
face 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.