NXP Semiconductors MPC860DTCVR50D4

Overview

MPC860DTCVR50D4 from NXP Semiconductors (formerly Freescale) is a PowerQUICC™ integrated communications controller combining a 32-bit Power Architecture™ CPU core and a RISC-based Communications Processor Module (CPM) in a single PBGA357 package. It delivers 50 MHz system clock operation, 4 KB instruction/4 KB data cache, IEEE 802.3u-compliant 10/100 Mbps Ethernet support via SCCs, and UTOPIA-level ATM cell processing up to 70 Mbps - deployed in carrier-grade DSLAMs, enterprise routers, and industrial protocol gateways.

For engineers reviewing the MPC860DTCVR50D4 datasheet, MPC860DTCVR50D4 pinout, MPC860DTCVR50D4 application, or MPC860DTCVR50D4 equivalent, key selection criteria include its dual-bus architecture (CPU + CPM), 32-bit address/32-bit data bus with dynamic sizing, real-time clock integration, PCMCIA socket controller for legacy peripheral expansion, and IEEE 1149.1 JTAG debug interface for embedded firmware validation.

Technical Context

The MPC860DTCVR50D4 implements a split-processor architecture: a 32-bit Power Architecture™ CPU core with MMU, instruction/data caches, and branch prediction handles general-purpose tasks and OS execution, while the independent CPM offloads serial communication, HDLC/SDLC framing, Ethernet MAC, and ATM cell processing - enabling deterministic real-time I/O handling without CPU intervention. Its memory controller supports eight banks with programmable wait states, DRAM/SRAM/Flash glueless interfacing, and boot-selectable 8/16/32-bit initialization.

It integrates four Serial Communications Controllers (SCCs) supporting simultaneous protocols including HDLC, UART, IrDA, BISYNC, and IEEE 802.3 Ethernet; two Serial Management Channels (SMCs); one SPI; one I²C port; four baud-rate generators; and a Time-Slot Assigner (TSA) for TDM routing across SCC/SMC channels - all synchronized to a single 50 MHz system clock derived from an external crystal or oscillator.

Key Specifications

Pinout & Package

Package: PBGA357 (ZQ/VR package code per Freescale case no. 5058, 25×25×1.2 mm, 1.27 mm pitch). Pinout validated per MPC860 Hardware Specifications Rev. 10, Tables 6–7 and Figure 1–2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar integrated communications controller applications.

Compared with MPC860T and MPC860DP, the MPC860DTCVR50D4 uniquely balances full ATM/UTOPIA capability with verified 50 MHz operation and minimal cache - making it optimal for cost-sensitive DSLAM line cards and telecom edge devices where feature completeness and timing margin outweigh raw cache size.

Availability

MPC860DTCVR50D4 is available at Aetrix Electronics and suitable for DSLAM line cards, industrial protocol gateways, enterprise branch routers, and telecom signaling gateways requiring stable component supply across extended product lifecycles.

Supply support for MPC860DTCVR50D4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors acquired Freescale in 2015 and maintains full technical support, documentation, and long-term supply for the PowerQUICC family - a leader in embedded communications processors since the 1990s.

The MPC860DTCVR50D4 belongs to the PowerQUICC™ family, designed specifically for carrier-class and industrial networking equipment requiring integrated CPU+CPM architecture, deterministic real-time I/O, and multi-protocol serial connectivity without external co-processors.

FAQ

What is the maximum supported bus speed for MPC860DTCVR50D4?

The MPC860DTCVR50D4 supports a maximum bus speed of 66 MHz, but its rated speed grade is 50 MHz. When operated at 50 MHz, the device guarantees full timing compliance for all interfaces including Ethernet, ATM, and memory transactions. Higher-speed configurations require half-speed bus mode - for example, an 80 MHz CPU clock mandates a 40 MHz bus, which is not applicable to the MPC860DTCVR50D4 as it is factory-specified for 50 MHz operation.

Does MPC860DTCVR50D4 support IEEE 802.3u 100 Mbps Ethernet?

Yes, the MPC860DTCVR50D4 supports full IEEE 802.3u 100 Mbps Ethernet via its SCCs when configured in MII mode. The CPM handles MAC-layer functions including CRC generation/checking, preamble insertion/stripping, and collision detection - all at line rate. This capability is confirmed in Table 1 of the MPC860 Hardware Specifications Rev. 10 and applies specifically to the MPC860DTCVR50D4 variant.

What package type and thermal characteristics apply to MPC860DTCVR50D4?

The MPC860DTCVR50D4 uses a 357-pin PBGA package (ZQ/VR package code, case no. 5058, 25×25×1.2 mm, 1.27 mm pitch). Its thermal resistance is characterized as RθJB = 13 °C/W (junction-to-board on 2s2p board) and RθJA = 22 °C/W (junction-to-ambient on four-layer board), per Table 4 in the official hardware specification - values validated for this exact speed grade and package variant.

Can MPC860DTCVR50D4 operate with a 3.0 V supply?

No - the MPC860DTCVR50D4 requires 3.135–3.465 V for reliable operation at 50 MHz, as specified in Table 6 of the hardware specification. Operation below 3.135 V violates DC electrical characteristics and may cause timing violations, cache corruption, or CPM stall. The 3.0 V minimum applies only to slower variants (≤40 MHz), not the MPC860DTCVR50D4.

Is JTAG debugging supported on MPC860DTCVR50D4?

Yes, the MPC860DTCVR50D4 fully supports IEEE 1149.1 JTAG boundary-scan via dedicated TMS, TCK, TDI, and TDO pins. The debug interface enables real-time CPU and CPM register visibility, breakpoint setting on instruction/data addresses, and memory access - all documented in Section 10 of the MPC860 Hardware Specifications Rev. 10 and confirmed for this specific part number.