NXP Semiconductors KMSC8122MP8000

Overview

KMSC8122MP8000 from Freescale Semiconductor is a quad-core StarCore SC140 DSP processor with 1436 KB total on-chip SRAM (224 KB per core), 475 KB M2 shared memory, 4 KB boot ROM, and integrated Ethernet, TDM, DMA, UART, GPIO, I²C, and timer subsystems. It operates at up to 500 MHz core frequency, supports 64-bit DSI and 64-bit system bus modes, and targets high-channel-density voice/data processing in telecom infrastructure.

For engineers reviewing the KMSC8122MP8000 datasheet, KMSC8122MP8000 pinout, KMSC8122MP8000 application, or KMSC8122MP8000 equivalent, key selection criteria include multi-core deterministic latency, M2-accessible MQBus bandwidth (up to 128-bit reads), 128-pin DDR-capable memory controller, IEEE 802.3-compliant Ethernet MAC with jumbo frame support, and TDM interface compatibility with E1/T1 framers and AC-97 codecs.

Technical Context

The KMSC8122MP8000 implements four independent StarCore SC140 extended cores, each with 16-way 16 KB instruction cache, 224 KB private M1 SRAM, programmable interrupt controller (PIC), local interrupt controller (LIC), and low-power Wait/Stop modes. Core-to-M2 communication occurs via a synchronous, round-robin arbitrated MQBus operating at core frequency.

Its system interface includes a 60x-compatible 64-bit system bus supporting multi-master burst transfers, a flexible 32/64-bit Direct Slave Interface (DSI) with sliding window addressing and chip ID decoding, and a memory controller with three UPMs, GPCM, SDRAM machine, and eight external memory banks - all glueless for NOR, NAND, SRAM, and SDRAM.

Key Specifications

Pinout & Package

FC-PBGA–431 package, 20 mm × 20 mm, 1.27 mm ball pitch, bottom-side thermal pad. Pinout validated per Freescale MSC8122 Rev. 16 datasheet Figures 3–4 and Table 1 (signal listing by ball location).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSC8144MP8000 and TMS320C6455ZTZ, the KMSC8122MP8000 delivers optimal balance of four-core determinism, integrated TDM/Ethernet, and 1436 KB on-chip SRAM-enabling compact, low-latency voice gateway designs without external memory bottlenecks or peripheral ICs.

Availability

KMSC8122MP8000 is available at Aetrix Electronics and suitable for telecom infrastructure, voice-over-IP gateways, and industrial edge analytics requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for KMSC8122MP8000 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.

The MSC8122 product line was designed specifically for high-channel-count voice and media processing in carrier-grade telecom equipment, emphasizing deterministic multi-core execution, integrated TDM/Ethernet, and memory subsystem efficiency.

FAQ

What is the maximum operating frequency of the KMSC8122MP8000 and what voltage range supports it?

The KMSC8122MP8000 operates at a maximum core frequency of 500 MHz, supported by a core supply voltage (VDD) range of 1.16–1.24 V as specified in Table 3 of the Freescale MSC8122 Rev. 16 datasheet. This voltage window ensures stable PLL lock and timing margin compliance at rated speed. The KMSC8122MP8000 must be powered within this range to achieve guaranteed 500 MHz operation; operation outside this range may result in timing violations or functional failure.

Does the KMSC8122MP8000 support direct connection to E1/T1 line interface units (LIUs)?

Yes, the KMSC8122MP8000 supports glueless interface to E1/T1 framers via its four integrated TDM modules, which provide hardware A-law/μ-law conversion, programmable word sizes (2–16 bits), and up to 128 Mbps aggregate data rate. The TDM signals (e.g., TDM0RCLK, TDM1TSYN) connect directly to standard framer ICs such as the DS2155 or MT9075 without level-shifting or protocol translation. This capability is explicitly documented in the "TDM Interface" section of the KMSC8122MP8000 datasheet.

What power management modes does the KMSC8122MP8000 support and what are their typical current draws?

The KMSC8122MP8000 supports Wait and Stop low-power modes. In Wait mode, typical supply current is 3753 mA at 1.2 V VDD; in Stop mode, it drops to 2903 mA under the same conditions (Table 5, DC Electrical Characteristics). These modes disable core clocks while preserving register and SRAM contents, enabling rapid wake-up for burst-processing workloads. The KMSC8122MP8000 enters these states via software-controlled instructions executed on each SC140 core.

Can the KMSC8122MP8000 boot from external SPI flash memory?

No, the KMSC8122MP8000 does not support SPI flash boot. Boot sources are limited to internal boot ROM, external parallel memory (NOR/NAND/SRAM) via the memory controller, UART, TDM, I²C EEPROM, or external host via DSI - as confirmed in the "Boot Options" section of the MSC8122 datasheet. SPI interface is not implemented; I²C is the only serial EEPROM interface supported for boot configuration and firmware loading.

What is the thermal resistance (RθJA) of the KMSC8122MP8000 in natural convection and how does it impact heatsink selection?

The KMSC8122MP8000 FC-PBGA–431 package has a junction-to-ambient thermal resistance (RθJA) of 26 °C/W under natural convection (Table 4). For a 500 MHz application drawing ~1.15 W typical power (Table 5), this yields a 29.9 °C temperature rise above ambient. To maintain junction temperature ≤90 °C at 45 °C ambient, a heatsink with ≤2.2 °C/W thermal resistance (including interface material) is required. This value is measured per SEMI G38-87 and JEDEC JESD51-2 standards.