NXP Semiconductors MSC8101M1250F

Overview

MSC8101M1250F from Freescale Semiconductor is a 16-bit networking digital signal processor featuring the SC140 four-ALU core, 512 KB on-chip SRAM, and a 150 MHz communications processor module (CPM) supporting TDM, Ethernet, and ATM interfaces. It delivers 1200 MMACS core + 300 MMACS EFCOP performance at 300 MHz internal clock, with 1.6 V core / 3.3 V I/O supplies, targeting multi-channel packet telephony systems.

For engineers reviewing the MSC8101M1250F datasheet, MSC8101M1250F pinout, MSC8101M1250F application, or MSC8101M1250F equivalent, key selection considerations include its 64-bit 100 MHz system bus, dual-phase PLL architecture (system + CPM DPLLs), HDI16 parallel host interface, and support for up to four E1/T1 or one E3/T3 + one E1/T1 configuration in telecom infrastructure.

Technical Context

The MSC8101M1250F integrates a StarCore SC140 DSP core with four 16-bit ALUs and two 32-bit AGUs, executing up to four MAC operations per cycle. Its CPM implements a 32-bit RISC protocol engine handling ATM AAL0/1/2/5, 10/100 Mbit Ethernet, and HDLC at T3 rates or 256 channels.

The device uses a 0.13 µm copper interconnect process, features separate 1.6 V core and 3.3 V I/O power domains, and includes a programmable memory controller supporting eight external memory banks with UPM-based glueless interfacing to SDRAM, SRAM, Flash, and EPROM.

Key Specifications

Pinout & Package

MSC8101M1250F is housed in a 17 mm × 17 mm lidded FC-PBGA package with lead-bearing or lead-free solder spheres. Pinout information is not publicly documented in available Freescale product briefs or reference manuals for this specific variant; official pin assignment requires consultation of the MSC8101 Technical Data document (order number MSC8101/D) and associated IBIS models.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar networking DSP applications.

Compared with MPC8272 and MSC8122, the MSC8101M1250F provides optimal balance of deterministic DSP performance, telecom-specific peripherals (TDM/ATM/E1-T1), and low-power 1.6 V core operation-making it uniquely suited for cost-sensitive, high-channel-count packet telephony and wireless baseband platforms where EFCOP-assisted filtering is critical.

Availability

MSC8101M1250F is available at Aetrix Electronics and suitable for third-generation wireless infrastructure, packet telephony gateways, and multi-channel xDSL aggregation requiring stable component supply and long-term lifecycle support.

Supply support for MSC8101M1250F 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 was a leading designer of embedded processors, analog, and connectivity solutions, later acquired by NXP Semiconductors in 2015. It specialized in automotive, industrial, and networking silicon.

The MSC8101M1250F belongs to Freescale's StarCore DSP family, engineered specifically for high-channel-count telecommunications infrastructure demanding deterministic real-time signal processing, integrated protocol acceleration, and low-power multi-voltage operation.

FAQ

What is the core clock frequency and power supply configuration of the MSC8101M1250F?

The MSC8101M1250F operates its SC140 core at 300 MHz with a dedicated 1.6 V core supply, while its I/O subsystem runs at 3.3 V. This dual-rail design enables sub-0.25 W core power consumption at full speed, critical for thermal management in densely packed telecom line cards. The MSC8101M1250F's PLL architecture supports stable clock generation across both domains without external synthesizers.

Does the MSC8101M1250F support Ethernet and ATM interfaces simultaneously?

Yes, the MSC8101M1250F CPM integrates independent hardware blocks for 10/100 Mbit Ethernet (MII interface) and 155 Mbps ATM (UTOPIA Level 1), allowing concurrent operation. Its RISC-based protocol engine can manage Ethernet frame forwarding while performing ATM cell segmentation and reassembly, making the MSC8101M1250F suitable for edge concentrators bridging IP and ATM networks.

What memory types does the MSC8101M1250F support via its external memory controller?

The MSC8101M1250F programmable memory controller supports SRAM, DRAM, EPROM, and Flash memory across up to eight banks, using user-programmable machines (UPM) for glueless interfacing. Its dedicated pipelined SDRAM interface enables high-bandwidth access for packet buffering, while the MSC8101M1250F's 512 KB on-chip SRAM reduces dependency on external memory for real-time code and coefficient storage.

Is the MSC8101M1250F pin-compatible with other members of the MSC81xx family?

No, the MSC8101M1250F is not pin-compatible with later variants such as MSC8122 or MSC8202. While sharing the StarCore SC140 core architecture, these devices use different FC-PBGA packages (e.g., 27 mm × 27 mm for MSC8122) and revised signal routing. Migration from MSC8101M1250F requires PCB redesign, though software reuse is possible due to ISA compatibility within the SC140 family.

What debugging interfaces does the MSC8101M1250F provide?

The MSC8101M1250F includes JTAG and an enhanced OnCE (EOnCE™) debug port supporting real-time tracing, breakpoint insertion, and register visibility without halting core execution. This enables non-intrusive development of time-critical DSP algorithms and CPM firmware, and is fully supported by CodeWarrior Development Studio for StarCore DSPs-essential for validating MSC8101M1250F-based telecom protocol stacks.