NXP Semiconductors MSC8101VT1250F

Overview

MSC8101VT1250F from Freescale Semiconductor is a high-performance network digital signal processor (DSP) built on the StarCore SC140 four-ALU core, delivering 1200 DSP MMACS at 300 MHz with 512 KB on-chip SRAM and integrated communications processor module (CPM) supporting TDM, Ethernet, and ATM interfaces - deployed in multi-channel xDSL and packet telephony systems.

For engineers reviewing the MSC8101VT1250F datasheet, MSC8101VT1250F pinout, MSC8101VT1250F application, or MSC8101VT1250F equivalent, this page provides verified functional identity, validated package mapping (FC-PBGA, 17 mm × 17 mm), confirmed pin roles per JTAG/CPM/System Bus groups, and real-world timing and interface constraints for telecom infrastructure design.

Technical Context

The MSC8101VT1250F implements a dual-bus architecture: a 64-bit XA data bus and 128-bit QBus, enabling concurrent access to internal memory and external peripherals. Its CPM includes four serial communication controllers (SCCs), three fast communication controllers (FCCs), and RISC-based protocol engines for HDLC, ATM (155 Mbps), and 10/100 Mbit Ethernet.

It integrates two phase-locked loops (PLLs): one for the SC140 core (300 MHz operation) and another for the CPM, with independent 1.6 V core and 3.3 V I/O power domains. The 16-channel DMA engine supports burst transfers and sophisticated addressing modes across unified 512 KB SRAM space.

Key Specifications

Pinout & Package

MSC8101VT1250F is housed in a lidded FC-PBGA package measuring 17 mm × 17 mm with 484 balls. Signal locations follow standard BGA ball-grid nomenclature; "pins" refer to functional signal positions within the array per Freescale documentation convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8260AZUU166D, MSC8101VT1250F delivers hardware-accelerated signal processing essential for real-time telecom PHY layers; versus MSC8122TVT1250B, it offers proven cost-optimized deployment in legacy xDSL and VoIP platforms without over-engineering.

Availability

MSC8101VT1250F is available at Aetrix Electronics and suitable for multi-channel xDSL modem banks, packet telephony gateways, 3G wireless baseband units, and VoIP DSP blades requiring stable component supply across extended product lifecycles.

Supply support for MSC8101VT1250F 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 processing, connectivity, and analog solutions for automotive, industrial, and networking markets.

The MSC8101VT1250F belongs to Freescale's StarCore DSP family, designed specifically for high-throughput, low-latency telecommunications infrastructure where integrated signal processing, protocol handling, and memory bandwidth converge.

FAQ

What is the core clock frequency and voltage specification for the MSC8101VT1250F?

The MSC8101VT1250F operates its SC140 core at 300 MHz using a dedicated 1.6 V core supply (VDD) and separate 3.3 V I/O supply (VDDH). This dual-rail configuration minimizes switching noise coupling between logic and interface domains, ensuring stable timing margins for high-speed bus transactions and CPM protocol engines. The MSC8101VT1250F datasheet specifies ±2% frequency tolerance under recommended operating conditions.

Does the MSC8101VT1250F support JTAG debugging, and what interface standard does it use?

Yes, the MSC8101VT1250F includes a fully compliant IEEE 1149.1 JTAG Test Access Port (TAP) with TMS, TCK, TDO, TDI, and TRST signals. It also integrates Freescale's Enhanced OnCE (EOnCE) debug architecture, enabling real-time trace, breakpoint insertion, and register inspection of both the SC140 core and CPM subsystems. This dual-debug capability is documented in the MSC8101VT1250F Reference Manual and User's Guide.

How much internal memory does the MSC8101VT1250F have, and how is it organized?

The MSC8101VT1250F contains 512 KB of on-chip SRAM organized as 256K 16-bit words in a unified address space. This memory is configurable by software as either program memory, data memory, or a mix, and supports both word and byte addressing. Its integration eliminates external memory bottlenecks for coefficient storage, state buffers, and real-time frame processing - a key advantage in MSC8101VT1250F-based xDSL and VoIP designs.

What communications protocols does the CPM in the MSC8101VT1250F support?

The MSC8101VT1250F Communications Processor Module (CPM) supports ATM (155 Mbps with AAL0/1/2/5), 10/100 Mbit Ethernet (MII interface), HDLC up to T3 rates or 256 channels, and TDM interfaces including E1/T1 (up to four links) or E3/T3 (one link). These capabilities are implemented in hardware via four SCCs and three FCCs, enabling concurrent protocol handling without CPU intervention - a defining feature of the MSC8101VT1250F architecture.

Is the MSC8101VT1250F pin-compatible with other members of the MSC81xx family?

No, the MSC8101VT1250F is not pin-compatible with other MSC81xx variants such as MSC8122 or MSC8156. While sharing the SC140 core architecture and some peripheral blocks, differences in memory controller width, CPM enhancements, and I/O signal allocation result in distinct FC-PBGA ball maps. The MSC8101VT1250F uses a 484-ball lidded FC-PBGA package with specific power, clock, and signal ball assignments defined in its mechanical drawing (Rev. 19).