NXP Semiconductors MPC852TVR100

Overview

MPC852TVR100 from Freescale Semiconductor is a PowerPC architecture-based integrated communications controller featuring an MPC8xx core operating at up to 100 MHz, 1.8 V core voltage, 3.3 V I/O with 5-V TTL compatibility, and integrated Fast Ethernet Controller (FEC). It serves as a system-on-chip solution for embedded network edge devices including VoIP clients, WiFi access points, and CPE equipment.

For engineers reviewing the MPC852TVR100 datasheet, MPC852TVR100 pinout, MPC852TVR100 application, or MPC852TVR100 equivalent, this page delivers verified technical context on its PowerQUICC II derivative architecture, dual-port RAM-based CPM subsystem, IEEE 802.3-compliant FEC interface, and mandatory reset configuration requirements for stable boot operation.

Technical Context

The MPC852TVR100 implements a single-issue 32-bit MPC8xx core with 4-Kbyte instruction and data caches (two-way set-associative), MMU with 32-entry TLB supporting 4/16/512 KB and 8 MB page sizes, and integrated System Integration Unit (SIU) with clock synthesizer, watchdog, and JTAG debug interface.

Its Communication Processor Module (CPM) operates independently via an 8-Kbyte dual-port RAM and RISC controller, managing two SCCs (supporting HDLC/UART/Ethernet), one SMC, SPI, PCMCIA-ATA interface, and eight serial DMA channels - all synchronized to the core but decoupled for deterministic real-time communication handling.

Key Specifications

Pinout & Package

The MPC852TVR100 is housed in a 324-pin PBGA package (19 mm × 19 mm, 1.27 mm pitch) with thermal pad exposed on underside for board-level heat conduction. Pin assignments follow Freescale's standard MPC8xx family layout, with dedicated banks for address/data multiplexing, memory control, CPM peripherals, and FEC MII signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC852TVR100, MPC866PZQ100 adds USB and enhanced FEC at higher power and voltage complexity, while MPC823EZQ100 removes Ethernet functionality to reduce cost and die size - making MPC852TVR100 the optimal balance of integrated networking, deterministic CPM offload, and proven field reliability in CPE and VoIP platforms.

Availability

MPC852TVR100 is available at Aetrix Electronics and suitable for VoIP terminal control, WiFi access point baseband, and Ethernet router edge node applications requiring stable component supply across extended product lifecycles.

Supply support for MPC852TVR100 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 leading designer of embedded processors and analog/mixed-signal ICs, specializing in automotive, industrial, and networking silicon.

The MPC852TVR100 belongs to the PowerQUICC family - engineered specifically for cost-effective, low-power integrated communications controllers targeting residential and SMB networking equipment with deterministic real-time packet processing requirements.

FAQ

What is the maximum operating frequency of the MPC852TVR100 core?

The MPC852TVR100 core operates at up to 100 MHz, but only in 2:1 bus mode (where core frequency is twice the external bus speed). In 1:1 mode, the maximum core frequency is 66 MHz. This constraint is enforced by internal clock divider logic and must be configured correctly in the hardware reset configuration word (HRCW) to avoid timing violations or undefined behavior during boot.

Does the MPC852TVR100 support IEEE 802.3 100BASE-TX Ethernet natively?

Yes, the MPC852TVR100 integrates a Fast Ethernet Controller (FEC) compliant with IEEE 802.3 that supports full-duplex 10/100 Mbps operation via its MII interface. However, it does not include a physical layer (PHY); an external 100BASE-TX PHY must be connected to the MII pins (MII_TXEN, MII_MDIO, etc.) to complete the Ethernet link.

What power supply sequencing is required for reliable MPC852TVR100 operation?

VDDL (core) must never exceed VDDH (I/O) during power-up or power-down. Freescale mandates that VDDL ramp after VDDH and remain ≤1.9 V while VDDH stays ≤3.465 V. Violating this risks forward-biasing ESD protection diodes, causing excessive current and long-term reliability degradation. A sequencing circuit using Schottky diodes (e.g., MUR420) is recommended per Figure 2 in the hardware specifications.

How is the MPC852TVR100's CPM module clocked relative to the main core?

The CPM runs from a separate clock domain derived from the system PLL output, allowing it to operate asynchronously from the MPC8xx core. This decoupling enables the CPM to handle serial communication, FEC packet buffering, and DMA transfers deterministically - even while the core executes complex application code or enters low-power states - ensuring real-time responsiveness for time-critical protocols like HDLC or VoIP RTP.

Can the MPC852TVR100 execute Linux or other full-featured OSes?

Yes, the MPC852TVR100's 32-bit PowerPC core, MMU with 32-entry TLB, and support for multiple page sizes (4 KB to 8 MB) make it capable of running Linux 2.4/2.6 kernels and real-time OSes like VxWorks or RTEMS. Field deployments confirm successful operation with 32 MB SDRAM and 8 MB Flash, though kernel porting requires correct cache coherency handling and CPM interrupt vector mapping in the BSP.