NXP Semiconductors KMPC8321EVRAFDC

Overview

KMPC8321EVRAFDC from Freescale Semiconductor is a PowerQUICC II Pro integrated communications processor featuring an e300c2 Power Architecture core (16 KB I-cache, 16 KB D-cache, dual integer units, no FPU), QUICC Engine block with five UCCs, DDR1/DDR2 memory controller (32-bit, up to 266 MHz), and PCI 2.3 interface. It targets residential gateways, ADSL SOHO routers, and industrial control systems requiring deterministic packet processing and hardware-accelerated security.

For engineers reviewing the KMPC8321EVRAFDC datasheet, KMPC8321EVRAFDC pinout, KMPC8321EVRAFDC application, or KMPC8321EVRAFDC equivalent, this page delivers verified electrical specs, validated package mapping, confirmed QUICC Engine protocol support (HDLC, Ethernet, ATM SAR), exact DDR voltage compatibility (1.8 V / 2.5 V), and real-world alternative part guidance - all grounded in Freescale's MPC8323EEC Rev. 4 documentation and official ordering data.

Technical Context

The KMPC8321EVRAFDC implements a split-architecture design: the e300c2 core handles control-plane tasks (OS, routing stack, management), while the QUICC Engine block-containing a 32-bit RISC controller, serial DMA, and five programmable UCCs-executes data-plane functions including 10/100 Mbps Ethernet MAC, HDLC/transparent (up to 70 Mbps full-duplex), and ATM SAR (OC-3). Its DDR1/DDR2 controller supports only one chip select and lacks ECC or FCRAM support.

Power delivery requires strict sequencing: VDD (1.0 V ± 50 mV) must reach 90% before GVDD/OVDD ramp, and PORESET must be asserted for ≥32 CLKIN cycles after stable clock application. The security engine (SEC 2.2) provides dedicated hardware acceleration for DES, 3DES, AES, SHA-1, and MD-5-but only via a single crypto-channel, limiting concurrent algorithm execution.

Key Specifications

Pinout & Package

KMPC8321EVRAFDC is housed in a 620-pin PBGA package (35 mm × 35 mm, 1.0 mm pitch) with 496 signal pins, 72 power/ground pins, and 52 reserved pins. Pin assignments follow Freescale's standardized PowerQUICC II Pro layout, with dedicated banks for DDR, PCI, local bus, QUICC Engine serial interfaces, and system control signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8323EVRAFDC, KMPC8321EVRAFDC trades UTOPIA and higher clock headroom for lower thermal envelope and cost; versus MPC8360EVRAFDC, it retains PCI and SEC 2.2 but lacks PCIe and dual DDR - making it optimal for cost-sensitive, thermally constrained embedded networking where legacy interface compatibility is essential.

Availability

KMPC8321EVRAFDC is available at Aetrix Electronics and suitable for residential gateways, industrial protocol converters, and test & measurement routers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production programs.

Supply support for KMPC8321EVRAFDC 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.

KMPC8321EVRAFDC belongs to the PowerQUICC II Pro family, designed specifically for cost-optimized, low-power communications infrastructure where deterministic real-time packet processing and hardware-accelerated security are required without full multicore complexity.

FAQ

What is the maximum DDR2 data rate supported by KMPC8321EVRAFDC?

KMPC8321EVRAFDC supports DDR2 SDRAM at up to 266 MHz data rate (133 MHz clock), delivering a theoretical peak bandwidth of 853 MB/s on its 32-bit bus. This is confirmed in Section 1.1.1 of the MPC8323EEC Rev. 4 specification, which states "DDR1/DDR2 memory controller-one 32-bit interface at up to 266 MHz supporting both DDR1 and DDR2." The controller does not support DDR2-400 or higher speeds.

Does KMPC8321EVRAFDC support UTOPIA Level 2 interface?

No, KMPC8321EVRAFDC does not support UTOPIA Level 2. The Freescale documentation explicitly states: "note that the MPC8321 and MPC8321E do not support UTOPIA" (Section 1, Overview, p.2). UTOPIA L2 capability is exclusive to the MPC8323E and MPC8323 variants, which feature 31 multi-PHY addressing - a function absent in the KMPC8321EVRAFDC silicon.

What are the power supply sequencing requirements for KMPC8321EVRAFDC?

KMPC8321EVRAFDC requires VDD (1.0 V) to reach 90% of nominal value before GVDD (1.8 V or 2.5 V) and OVDD (3.3 V) begin ramping. PORESET must be asserted for ≥32 CLKIN cycles after stable clock application. This sequence prevents I/O contention and excessive current draw, as detailed in Section 2.2 "Power Sequencing" of the MPC8323EEC Rev. 4 document.

How many Ethernet MAC interfaces does KMPC8321EVRAFDC provide?

KMPC8321EVRAFDC provides up to three 10/100 Mbps Ethernet MAC interfaces via its QUICC Engine UCCs, configurable using MII or RMII physical layer interfaces. This is specified in Section 1.1.2 "Serial Interfaces" (p.4) and confirmed in the block diagram (Figure 1), which shows three MII/RMII paths connected to the QUICC Engine block.

Is KMPC8321EVRAFDC pin-compatible with MPC8323EVRAFDC?

No, KMPC8321EVRAFDC is not pin-compatible with MPC8323EVRAFDC. Although both use 620-pin PBGA packages, Freescale's pin listing documents (Section 21) show distinct signal allocations: MPC8323E adds UTOPIA pins and reassigns several GPIO/PCI signals to support its enhanced features, while KMPC8321EVRAFDC reserves those balls for NC or alternate functions. PCB layout cannot be reused.