NXP Semiconductors MC8641DHX1500KE

Overview

MC8641DHX1500KE from Freescale Semiconductor is a single-core Power Architecture® e600-based integrated host processor with 1.5 GHz core frequency, 1 MB L2 cache with ECC, dual 64-bit DDR/DDR2 memory controllers (72-bit with ECC), and four enhanced three-speed Ethernet (eTSEC) controllers supporting 10/100/1000 Mbps. It targets networking infrastructure, storage systems, and wireless baseband applications requiring high-throughput packet processing and deterministic I/O.

For engineers reviewing the MC8641DHX1500KE datasheet, MC8641DHX1500KE pinout, MC8641DHX1500KE application, or MC8641DHX1500KE equivalent, key selection considerations include its 1023-pin FC-CBGA package, 1.1 V core supply at 1500 MHz, dual DDR2-600 support, PCI Express 1.0a x1/x2/x4/x8 interface, and Serial RapidIO 1.2 4x LP-Serial link capability.

Technical Context

The MC8641DHX1500KE implements a superscalar 32-bit e600 core with eleven execution units, separate 32 KB L1 instruction and data caches, and a unified 1 MB eight-way set-associative L2 cache with ECC. Its MPX coherency module supports ten local address windows and optional low-memory offset mode for multi-master arbitration.

It integrates dual DDR/DDR2 SDRAM controllers (72-bit with ECC), four eTSECs with MII/RGMII/TBI/RTBI physical layer support and TCP/IP offload, a four-channel DMA controller, programmable OpenPIC-compliant interrupt controller, and dual I²C controllers with digital spike filtering. The device uses a 1023-pin Hi-CTE flip-chip ceramic BGA package with defined power sequencing requirements.

Key Specifications

Pinout & Package

MC8641DHX1500KE is housed in a 1023-pin Hi-CTE flip-chip ceramic BGA (FC-CBGA) package with 35 × 35 mm body size, 1.27 mm pitch, and thermal lid. Pin assignment follows Freescale's MPC8641D Rev. 3 signal listing; no generic or inferred pinout is used.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8641DZX1500KE and P2020NSN2KFC, MC8641DHX1500KE offers optimal balance of proven e600 performance, DDR2 memory efficiency, and SRIO/PCIe flexibility for cost-constrained networking control applications - without the thermal overhead of dual cores or architectural discontinuity of QorIQ migration.

Availability

MC8641DHX1500KE is available at Aetrix Electronics and suitable for wireless infrastructure, enterprise storage, and industrial Ethernet gateway applications requiring stable component supply, long-term obsolescence management, and traceable sourcing.

Supply support for MC8641DHX1500KE 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 since 2015) was a leading designer of embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.

The MPC8641 family was designed as a high-performance Power Architecture host processor targeting carrier-grade networking, wireless infrastructure, and storage systems - emphasizing I/O bandwidth, memory subsystem efficiency, and real-time determinism.

FAQ

What is the core voltage requirement for MC8641DHX1500KE at 1500 MHz operation?

The MC8641DHX1500KE requires VDD_Core0 = 1.10 V ±50 mV for guaranteed 1500 MHz operation, as specified in Table 2 of the MPC8641D Rev. 3 datasheet. This voltage must be stable before SYSCLK activation and sequenced ahead of DDR I/O supplies (Dn_GVDD/Dn_MVREF) per Figure 3 power-up timing. Deviation beyond ±50 mV risks timing violations or functional failure.

Does MC8641DHX1500KE support DDR2-600 memory, and what is the maximum capacity per channel?

Yes, MC8641DHX1500KE supports DDR2-600 (300 MHz clock, 600 Mbps data rate) with 72-bit bus width including ECC. Each of the two independent DDR2 controllers supports up to 16 GB of memory, enabled by 36-bit addressing and page/cache-line interleaving between channels - delivering up to 9.6 GB/s theoretical bandwidth per controller.

Can MC8641DHX1500KE operate with both PCI Express and Serial RapidIO simultaneously?

No. MC8641DHX1500KE implements a shared high-speed serial interface that is configured at reset to operate either as PCI Express 1.0a (x1/x2/x4/x8) or Serial RapidIO 1.2 (1x/4x), but not both concurrently. The selection is made via POR configuration pins (TSEC2_TXD[4:7]) and is fixed for the power-on cycle - hardware redesign is required to switch modes.

What boot sources are supported by MC8641DHX1500KE, and how is integrity verified?

MC8641DHX1500KE supports boot from serial ROM via its dual I²C controllers. The boot sequencer validates data integrity using a 32-bit CRC and preamble signature before loading configuration registers or initializing memory - ensuring reliable, tamper-resistant startup. Extended I²C addressing mode allows access to large ROM devices beyond 64 KB.

How many Ethernet controllers does MC8641DHX1500KE integrate, and which physical interfaces do they support?

MC8641DHX1500KE integrates four enhanced three-speed Ethernet controllers (eTSECs), each supporting 10/100/1000 Mbps operation. They support MII, RMII, GMII, RGMII, TBI, and RTBI physical interfaces - enabling flexible PHY selection from low-cost 10/100 transceivers to 1 Gbps optical modules without external glue logic.