NXP Semiconductors MSC8156SAG1000B

Overview

MSC8156SAG1000B from NXP Semiconductors (formerly Freescale) is a six-core StarCore SC3850 digital signal processor designed for baseband and packet-processing in wireless infrastructure. It integrates six 1 GHz DSP cores, 512 KB L2 cache per core, dual DDR2/DDR3 controllers (800 MT/s), MAPLE-B baseband accelerator, and QUICC Engine subsystem for offloaded Gigabit Ethernet. Used in 4G LTE eNodeB baseband units.

For engineers reviewing the MSC8156SAG1000B datasheet, MSC8156SAG1000B pinout, MSC8156SAG1000B application, or MSC8156SAG1000B equivalent, key selection criteria include multi-core deterministic real-time processing, integrated SerDes (Serial RapidIO/PCIe/SGMII), TDM interface support for legacy framer connectivity, and low-power CMOS 45 nm SOI process for thermal efficiency in dense RF systems.

Technical Context

The MSC8156SAG1000B implements a chip-level arbitration and switching system (CLASS) enabling non-blocking interconnect between six DSP cores, M2/M3 memory, DDR controllers, MAPLE-B, and high-speed serial interfaces. Its memory hierarchy includes 32 KB L1 instruction/data cache per core, configurable 512 KB L2 cache (as M2 memory), 1056 KB on-chip M3 SRAM, and 96 KB boot ROM.

It features five PLLs - three global and two dedicated Serial RapidIO PLLs - supporting differential clock inputs and jitter-tolerant SerDes operation. The QUICC Engine subsystem contains dual RISC processors with 48 KB RAM each, handling two Gigabit Ethernet interfaces (RGMII/SGMII) to relieve DSP cores from protocol stack overhead.

Key Specifications

Pinout & Package

MSC8156SAG1000B uses a 783-ball Fine-Pitch Ceramic Ball Grid Array (FC-PBGA) package measuring 29 mm × 29 mm. The package supports multiple voltage domains (VDD, GVDD1, GVDD2, QVDD, MVDD, NVDD, SXCVDD1/2, SXPVDD1/2) and includes dedicated ground balls (VSS, SXPVSS1/2, SXCVSS1/2) for noise isolation across I/O, memory, SerDes, and core logic sections.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-core DSP applications.

Compared with TMS320C6678AZHSA and LS1046A, the MSC8156SAG1000B delivers superior deterministic latency for LTE Layer 1 processing due to its StarCore architecture, MAPLE-B hardware acceleration, and integrated TDM interfaces - making it uniquely suitable for cost-sensitive, high-channel-count wireless infrastructure where legacy framer compatibility and baseband-specific throughput are critical.

Availability

MSC8156SAG1000B is available at Aetrix Electronics and suitable for wireless infrastructure, packet gateway, and industrial test equipment requiring stable component supply, long-term lifecycle assurance, and qualified industrial-temperature operation.

Supply support for MSC8156SAG1000B 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

NXP Semiconductors is a global semiconductor company formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and communications markets.

The MSC8156SAG1000B belongs to NXP's StarCore DSP family, designed specifically for high-performance, low-latency baseband processing in 3G/4G wireless infrastructure equipment where deterministic real-time behavior and hardware-accelerated signal processing are essential.

FAQ

What is the maximum DDR data rate supported by the MSC8156SAG1000B?

The MSC8156SAG1000B supports DDR2 and DDR3 memory interfaces operating at up to 400 MHz clock frequency, delivering an effective data rate of 800 MT/s. This is confirmed in Section 2.6 (AC Timing Characteristics) of the Rev. 6 datasheet, with timing compliance verified across industrial temperature range (–40°C to +105°C) and voltage tolerances.

Does the MSC8156SAG1000B include hardware support for Turbo decoding?

Yes, the MSC8156SAG1000B includes the MAPLE-B baseband accelerator, which provides dedicated hardware for Turbo decoding (up to 100 Mbps), Viterbi decoding (K=9), and FFT/iFFT operations. This capability is explicitly documented in the functional overview and block diagram (Figure 1) of the Rev. 6 datasheet.

How many independent TDM interfaces does the MSC8156SAG1000B support?

The MSC8156SAG1000B supports up to four independent TDM modules, each programmable for 2-, 4-, 8-, or 16-bit word size and capable of up to 62.5 Mbps data rate. Each module includes hardware A-law/μ-law conversion and glueless interface capability to E1/T1 framers, as specified in Section 1.1 of the Rev. 6 datasheet.

What package type and dimensions does the MSC8156SAG1000B use?

The MSC8156SAG1000B uses a 783-ball Fine-Pitch Ceramic Ball Grid Array (FC-PBGA) package measuring 29 mm × 29 mm with 1.0 mm ball pitch. Mechanical details, including solder mask and land pattern recommendations, are provided in Section 5 (Package Information) and Figure 40 of the Rev. 6 datasheet.

Is JTAG debugging supported on the MSC8156SAG1000B?

Yes, the MSC8156SAG1000B supports standard IEEE 1149.1 JTAG boundary scan via dedicated TCK, TMS, TDI, TDO, and TRST pins (balls T2, T4, T5, T6, and N2 respectively). JTAG timing specifications and reset integration are fully detailed in Section 2.6 and Figure 30 of the Rev. 6 datasheet.