NXP Semiconductors KMPC875VR133

Overview

KMPC875VR133 from Freescale Semiconductor is a Power Architecture™-based 32-bit integrated microprocessor with embedded MPC8xx core, dual 8-Kbyte instruction/data caches, MMU, two Fast Ethernet controllers (10/100 Mbps), USB 2.0 host/function interface, and hardware security engine (AES, DES, SHA, MD5) - deployed in telecom edge routers, industrial gateways, and secure network appliances requiring deterministic real-time control and IPsec acceleration.

For engineers reviewing the KMPC875VR133 datasheet, KMPC875VR133 pinout, KMPC875VR133 application, or KMPC875VR133 equivalent, key selection criteria include its 133 MHz core frequency (2:1 bus mode), 256-pin PBGA package, 1.8 V core / 3.3 V I/O operation, IEEE 802.3-compliant FECs, and mandatory reset configuration for boot stability.

Technical Context

The KMPC875VR133 integrates three major functional modules on a unified 32-bit internal bus: an MPC8xx RISC core with branch prediction and LRU cache replacement, a System Integration Unit (SIU) providing clock synthesis, watchdog, PIT, JTAG, and reset control, and a Communications Processor Module (CPM) managing serial protocols via 8-Kbyte dual-port RAM and SDMA channels.

Its security engine implements dedicated crypto-acceleration units - AESU (128/192/256-bit keys, ECB/CBC/CTR), DEU (DES/3DES with K1/K2/K3 support), and MDEU (SHA-1/SHA-256, MD5, HMAC) - all coordinated by a crypto-channel supporting multi-command descriptors and 256-byte per-unit buffers with flow control.

Key Specifications

Pinout & Package

The KMPC875VR133 is housed in a 256-ball PBGA package (17 mm × 17 mm, 1.27 mm pitch) with power/ground ball mapping optimized for low-noise SIU and CPM operation. Thermal pad under die enables efficient heat transfer to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with KMPC875VR133, the MPC875VR100 trades 33 MHz of core bandwidth for 18% lower typical power and relaxed thermal design, while the MPC875VR133CZQ retains identical performance but extends operational reliability to harsh environments - both preserve full software and hardware compatibility.

Availability

KMPC875VR133 is available at Aetrix Electronics and suitable for secure networking equipment, industrial gateways, and telecom infrastructure requiring stable component supply across long-life production cycles.

Supply support for KMPC875VR133 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) is a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.

The KMPC875VR133 belongs to the PowerQUICC™ family - designed specifically for integrated communications processing in resource-constrained, real-time network edge devices with hardware-accelerated security and dual Ethernet.

FAQ

What is the maximum operating junction temperature for KMPC875VR133?

The KMPC875VR133 has a maximum junction temperature (TJ) of 95 °C under standard grade operating conditions. This limit is defined in Table 3 of the MPC875EC Rev. 4 specification and applies when ambient temperature (TA) is maintained at 0–70 °C with appropriate board-level thermal design. Exceeding 95 °C risks permanent damage or accelerated wear-out; thermal modeling using RθJB = 20 °C/W and measured board temperature is recommended for validation. The KMPC875VR133 must be derated if operated continuously near this limit.

Does KMPC875VR133 support pin-compatible migration from MPC860 series?

No, KMPC875VR133 is not pin-compatible with MPC860-series devices. Although both belong to the PowerQUICC family and share architectural lineage, KMPC875VR133 uses a 256-ball PBGA package with distinct power ball mapping, signal multiplexing (e.g., TSA, enhanced USB), and memory controller register layout. Migration requires PCB redesign, updated boot code for mandatory reset configuration (HRCW/DBGC), and driver adaptation for CPM register offsets. The KMPC875VR133 is a standalone platform upgrade, not a drop-in replacement.

How is the security engine in KMPC875VR133 initialized and accessed?

The KMPC875VR133 security engine is initialized during boot via SIUMCR[DBGC] and HRCW[DBGC] configuration, then accessed through dedicated memory-mapped registers in the CPM address space (0xFF00_0000–0xFF00_FFFF). Software writes command descriptors to crypto-channel FIFOs, triggering autonomous execution by AESU/DEU/MDEU units. Each unit has 256-byte buffers with flow control; completion is signaled via CPM interrupt. No OS kernel modifications are required - drivers use standard PowerPC e500-style descriptor chaining. KMPC875VR133 documentation confirms this model in Section 2.4 of the MPC885 Reference Manual.

Can KMPC875VR133 operate in 1:1 bus mode at 133 MHz?

No, KMPC875VR133 cannot operate in 1:1 bus mode at 133 MHz. Per Section 2 "Features" of the MPC875EC Rev. 4 spec, the 133 MHz core frequency is supported in 2:1 mode only; 1:1 mode is limited to 66 MHz or 80 MHz. Attempting 133 MHz in 1:1 mode violates AC timing specifications and will cause bus contention or data corruption. Valid configurations are: 133 MHz core / 66.5 MHz bus (2:1), 80 MHz core / 80 MHz bus (1:1), or 66 MHz core / 66 MHz bus (1:1). The KMPC875VR133's bus timing tables explicitly exclude 133 MHz 1:1 operation.

What are the mandatory reset configuration steps for KMPC875VR133?

KMPC875VR133 requires mandatory reset configuration per Table 7 of the MPC875EC Rev. 4 spec: HRCW[DBGC] must be set to binary X1, SIUMCR[DBGC] programmed to matching X1 value post-reset, MBMR[GPLB4DIS] = 0, and specific PAPAR/PADIR/PBPAR/PBDIR/PCPAR/PCDIR bitfields cleared. These settings must be applied in boot code immediately after HRESET deassertion. Failure causes undefined CPM behavior, USB enumeration failure, or FEC initialization hang. The KMPC875VR133 datasheet specifies exact bit positions and binary values - no deviation is permitted for reliable operation.