NXP Semiconductors MC860SRCVR50D4R2

Overview

MC860SRCVR50D4R2 from Freescale Semiconductor is a 32-bit Power Architecture™ communications processor (PowerQUICC™) integrating CPU core, CPM, Ethernet MAC, ATM UTOPIA interface, and system peripherals in a single PBGA357 package. It operates at up to 50 MHz, supports 10/100 Mbps Ethernet (IEEE 802.3u), ATM UNI 4.0 over UTOPIA, and features 4 KB instruction / 4 KB data cache, 32-bit address/data bus, and real-time clock - deployed in telecom access gateways and industrial protocol converters.

For engineers reviewing the MC860SRCVR50D4R2 datasheet, MC860SRCVR50D4R2 pinout, MC860SRCVR50D4R2 application, or MC860SRCVR50D4R2 equivalent, key selection criteria include verified 50-MHz system clock operation, UTOPIA Level-1 master support for 25/51/155-Mbps framers, IEEE 1149.1 JTAG debug compliance, and 3.3-V core with 5-V-tolerant I/O (except EXTAL/EXTCLK).

Technical Context

The MC860SRCVR50D4R2 implements a dual-module architecture: a 32-bit Power Architecture CPU core with MMU, instruction/data caches, and time base; plus a RISC-based Communications Processor Module (CPM) handling serial protocols (HDLC, UART, IrDA, BISYNC), ATM cell processing, and FEC/UTOPIA timing. Its memory controller supports eight banks with programmable wait states and glueless DRAM/SRAM/Flash interfacing.

It delivers deterministic communication processing via four SCCs (configurable for Ethernet, HDLC, or PPP), two SMCs, one SPI, one I²C port, and TSA-based TDM slot assignment for ISDN/T1/PCM. The SIU provides clock synthesis, PIT, watchdog, RTC, and IEEE 1149.1 test access - all operating under 3.3 V ±3% at junction temperatures up to 95 °C.

Key Specifications

Pinout & Package

MC860SRCVR50D4R2 is housed in a 357-ball plastic ball grid array (PBGA) package, case number 5050 (1103-01), 25 mm × 25 mm × 0.9 mm body height, 1.27 mm ball pitch. Thermal design requires low-impedance VDD/GND connections with ≥4 × 0.1 µF bypass capacitors placed near package edges.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860T and MPC860DP, MC860SRCVR50D4R2 delivers verified 50-MHz UTOPIA Level-1 master operation with minimal external components, making it the most suitable choice for space-constrained, cost-sensitive telecom access equipment where Ethernet and ATM are used separately rather than concurrently.

Availability

MC860SRCVR50D4R2 is available at Aetrix Electronics and suitable for DSLAM line cards, industrial protocol gateways, cellular base station controllers, and secure remote terminal units requiring stable component supply across extended product lifecycles.

Supply support for MC860SRCVR50D4R2 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

Freescale Semiconductor (now part of NXP Semiconductors) was a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.

The MPC860 PowerQUICC family was designed specifically for integrated communications controller applications - combining general-purpose CPU performance with hardware-accelerated protocol processing to reduce system-level complexity in telecom and industrial edge devices.

FAQ

What is the maximum guaranteed operating frequency of the MC860SRCVR50D4R2?

The MC860SRCVR50D4R2 is rated for guaranteed operation at 50 MHz system clock frequency. This is confirmed in the hardware specifications (Rev. 10, Section 9, Table 7), where AC timing parameters are explicitly validated at 50 MHz with 3.3-V supply. Operation above 50 MHz violates maximum tolerated ratings and voids functional guarantees.

Does the MC860SRCVR50D4R2 support concurrent Ethernet MAC and UTOPIA ATM interfaces?

No - the MC860SRCVR50D4R2 does not support simultaneous Ethernet and UTOPIA operation. As stated in Section 4 ("Features") of the hardware specification, "10/100 Mbps Ethernet support … is not available when using ATM over UTOPIA interface." The resource arbitration is hardwired; enabling UTOPIA disables the Ethernet MAC path.

What package type and ball count does the MC860SRCVR50D4R2 use?

The MC860SRCVR50D4R2 uses a 357-ball plastic BGA (PBGA) package, case number 5050 (1103-01), with 25 mm × 25 mm footprint and 1.27 mm ball pitch. This matches the ZP package designation defined in Table 3 of the hardware specification and is distinct from the ZQ/VR variant used by higher-cache variants like MPC860DP.

Is the MC860SRCVR50D4R2 compatible with 5-V logic interfaces?

The MC860SRCVR50D4R2 supports 5-V-tolerant inputs on all pins except EXTAL and EXTCLK, which require VIHC = 0.7 × VDDH to VDDH + 0.3 V. Input high voltage (VIH) is specified up to 5.5 V, and absolute maximum input voltage is VDDH + 2.5 V - enabling direct connection to 5-V peripherals without level shifters.

What debug and test capabilities does the MC860SRCVR50D4R2 provide?

The MC860SRCVR50D4R2 includes full IEEE 1149.1 (JTAG) test access port with TMS, TCK, TDI, TDO, and TRST pins, plus eight hardware watchpoint comparators (four instruction address, two data address, two data value). These enable non-intrusive real-time debugging, boundary scan testing, and emulation without halting CPU execution.