MPC855TVR66D4

The MPC855TVR66D4 is a single-core, 32-bit MPC8xx microprocessor running at 66 MHz, designed for embedded communications and networking controller applications. It integrates the MPC8xx core with a Communications Processor Module (CPM) and an on-chip Fast Ethernet controller to address cost-sensitive networking designs.

Targeted use cases include SOHO routers, ADSL and cable modem controllers, and other low-cost networking and telecommunications equipment where integrated communications peripherals and moderate processing performance are required.

Key Features

• Core  MPC8xx 32-bit processor core, single core operating at 66 MHz.
• Communications Processor (CPM)  Integrated RISC communications processor for protocol handling and offload of communication tasks; supports CPM-based features.
• Integrated Ethernet  Includes a 10/100-Mbps Fast Ethernet controller and an additional 10-Mbps channel (specification lists one 10/100 Mbps and one 10 Mbps interface), with on-chip FIFOs and bursting DMA to support external memory transfers.
• Protocol Support  Communications offload support includes ATM, HDLC/SDLC and QMC multichannel protocol functionality as provided by the CPM architecture.
• Memory and DMA  On-chip FIFOs for transmit and receive with support for off-chip buffer descriptor rings and a dedicated DRAM controller; series devices include an 8-KByte dual-port RAM.
• Interfaces  Additional interfaces include HDLC/SDLC and multiple physical Ethernet interfaces (100-Mbps MII, 10-Mbps MII, and a 10-Mbps 7-wire option are supported by the Ethernet controller in the series).
• Power and I/O  3.3 V I/O supply for device interfacing.
• Package and Mounting  357-PBGA package (25×25) in a surface-mount form factor; supplier package noted as 357-BBGA / 357-PBGA.
• Operating Range  Consumer qualification with an operating temperature range of 0 °C to 95 °C.
• Compliance  RoHS compliant.

Typical Applications

• SOHO Routers  Integrated Ethernet and CPM protocol support make the MPC855TVR66D4 suitable for small office/home office routing and network gateway functions.
• ADSL and Cable Modems  Designed for cost-sensitive modem controllers where offloaded communication processing and Ethernet connectivity are required.
• Embedded Networking Appliances  Targeted for low-cost networking and telecommunications systems that benefit from an integrated CPU, CPM, and Fast Ethernet controller.

Unique Advantages

• Highly integrated communications platform: Combines an MPC8xx general-purpose core, a CPM-based communications processor, and a 10/100-Mbps Ethernet controller to reduce external component count.
• Protocol offload capability: CPM support for ATM, HDLC/SDLC and QMC enables protocol processing off the main CPU, simplifying firmware and improving throughput for networking tasks.
• Flexible Ethernet connectivity: Fast Ethernet controller with multiple physical interface options and on-chip FIFOs with bursting DMA provides flexible interfacing to external PHYs and memory.
• Compact surface-mount package: 357-PBGA (25×25) package supports dense board layouts for compact embedded designs.
• Industry-standard I/O voltage: 3.3 V I/O simplifies integration with common peripheral devices and transceivers.

Why Choose MPC855TVR66D4?

The MPC855TVR66D4 positions itself as a practical, cost-conscious choice for embedded networking and communications designs that require a balance of CPU capability and integrated communications peripherals. With its MPC8xx core, CPM-based protocol offload and an on-chip 10/100-Mbps Ethernet controller, the device consolidates key functions to simplify board design and lower bill of materials for consumer-grade networking products.

Its surface-mount 357-PBGA package, 3.3 V I/O, and consumer operating range make it suitable for compact, temperature-constrained deployments such as SOHO routers, modem controllers, and other low-cost networking appliances.

If you would like pricing or availability information for the MPC855TVR66D4, request a quote or submit an inquiry and our team will respond with next steps.