NXP Semiconductors KMPC875CVR133

Overview

KMPC875CVR133 from Freescale Semiconductor is a PowerQUICC™ integrated communications processor combining a 32-bit MPC8xx core, dual Fast Ethernet controllers (10/100 Mbps), USB 2.0 host/function interface, security engine (AES-128/192/256, DES/3DES, SHA-1/256, MD5), and CPM-based serial peripherals - all operating at 133 MHz core frequency in 2:1 bus mode. It targets secure network edge devices such as DSL gateways and firewall appliances requiring deterministic real-time packet processing.

For engineers reviewing the KMPC875CVR133 datasheet, KMPC875CVR133 pinout, KMPC875CVR133 application, or KMPC875CVR133 equivalent, key selection considerations include its 256-pin PBGA package, 1.8-V core / 3.3-V I/O voltage domains, mandatory VDDL–VDDH sequencing, integrated FEC+USB+security acceleration, and absence of external memory bus wait-state limitations beyond 30 cycles per bank.

Technical Context

The KMPC875CVR133 implements a single-issue Power Architecture™ core with physically addressed 8-Kbyte instruction and data caches (two-way set-associative, 256 sets), 32-entry fully associative TLBs supporting 4/16/512 KB and 8 MB page sizes, and on-chip MMU for virtual memory management. Its CPM executes serial protocols independently via 8-Kbyte dual-port RAM and SDMA channels.

It integrates a dedicated security engine comprising AESU (ECB/CBC/CTR modes), DEU (DES/3DES with K1/K2/K3 support), and MDEU (SHA-1/256, MD5, HMAC), all coordinated by a crypto-channel with 256-byte buffers and multi-command descriptor handling. The SIU provides clock synthesis, PIT, watchdog, JTAG debug, and IEEE 1149.1 test access.

Key Specifications

Pinout & Package

The KMPC875CVR133 is housed in a 256-ball plastic ball grid array (PBGA) package with thermal pad, designed for four-layer PCB mounting with dedicated power/ground planes and strict decoupling requirements (minimum four 0.1 µF capacitors, one per side).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC875VR133, KMPC875CVR133 adds qualification-grade screening and extended thermal validation; compared with MPC885CZQ133, it retains PCMCIA, TSA, and lower-power 133 MHz operation ideal for cost-sensitive edge nodes where DDR complexity is unnecessary.

Availability

KMPC875CVR133 is available at Aetrix Electronics and suitable for DSL gateways, industrial firewalls, secure remote terminals, and medical imaging routers requiring stable component supply across extended product lifecycles.

Supply support for KMPC875CVR133 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 KMPC875CVR133 belongs to the PowerQUICC™ family - designed specifically for integrated communications processing in resource-constrained network edge devices requiring hardware-accelerated security, dual Ethernet, and real-time serial protocol handling.

FAQ

What is the maximum allowable voltage difference between VDDL and VDDH for KMPC875CVR133 during power-up?

The KMPC875CVR133 requires that VDDL must not exceed VDDH at any point during power-up or power-down sequences. Additionally, the absolute difference between VDDL and VDDSYN must remain ≤100 mV. Violating this causes forward biasing of ESD diodes and potential long-term reliability degradation. Freescale recommends using the Figure 4 voltage sequencing circuit with MUR420 and 1N5820 Schottky diodes to enforce compliance.

Does KMPC875CVR133 support 1:1 bus mode operation at 133 MHz?

No, KMPC875CVR133 does not support 1:1 bus mode at 133 MHz. According to the MPC875 Hardware Specifications Rev. 4, the 133-MHz core frequency is valid only in 2:1 bus mode. For 1:1 operation, supported core frequencies are 66 MHz and 80 MHz. Attempting 1:1 mode at 133 MHz violates AC timing specifications and may result in undefined bus behavior or data corruption.

Which cryptographic algorithms are hardware-accelerated by the security engine in KMPC875CVR133?

The KMPC875CVR133 security engine accelerates AES (128/192/256-bit keys in ECB/CBC/CTR modes), DES/3DES (with two-key and three-key variants), SHA-1/256, MD5, and HMAC using either hash algorithm. These functions execute in dedicated execution units (AESU, DEU, MDEU) managed by a crypto-channel with 256-byte buffers - enabling concurrent processing of multiple cryptographic operations without CPU intervention.

Can KMPC875CVR133 operate with standard 3.3-V LVTTL I/O levels while interfacing with 5-V peripherals?

Yes, KMPC875CVR133 supports 5-V tolerant inputs on specific pins including PA[0:15], PB[14:31], PC[4:15], PD[3:15], PE[14:31], TDI/TDO/TCK/TRST/TMS, and MII signals. However, no input voltage may exceed VDDH + 2.5 V (i.e., ≤5.8 V when VDDH = 3.3 V), and absolute maximum is 5.5 V. Outputs remain 3.3-V LVTTL compliant with VOH ≥2.4 V and VOL ≤0.5 V under specified load conditions.

What boot configuration registers require mandatory programming after reset for KMPC875CVR133?

After HRESET negation, KMPC875CVR133 requires mandatory programming of SIUMCR[DBGC] = binary X1, MBMR[GPLB4DIS] = 0, PAPAR[5:9]/[12:13] = 0, PADIR[5:9]/[12:13] = 0, PBPAR[14:18]/[20:22] = 0, PBDIR[14:18]/[20:22] = 0, PCPAR[4:5]/[8:9]/[14] = 0, and PCDIR[4:5]/[8:9]/[14] = 0 - as defined in Table 7 of the Hardware Specifications. Failure to configure these results in undefined port behavior and potential system lockup.