Emerson PMPPC7448 사용자 설명서
10006757-02
PmPPC7448 User’s Manual
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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.
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.
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).
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.
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).
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.
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.
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.