MSC8122VT8000 - Quad SC140 DSP, 500MHz, 431-FCBGA | NXP
MPN: MSC8122VT8000 ✗ Cuối đờiMSC8122VT8000 Tóm tắt
A digital signal processor (DSP) is a specialized microprocessor optimized for numeric-intensive, real-time signal-processing workloads such as audio/video codecs, baseband demodulation, and packet inspection. SC140 is a fixed-point VLIW architecture from the StarCore family, distinguished by its four parallel arithmetic units per core and zero-overhead looping; the MSC8122 multiplies that capability by four cores on a single die, putting it in the same broad category as multicore baseband SoCs.
Key features that differentiate the MSC8122VT8000 include its quad-core SC140 fabric at 500 MHz, an aggregate 1436 Kbytes of internal SRAM M1 memory distributed across cores, four TDM serial interfaces for multi-channel telecom audio, an on-chip Ethernet MAC, and a hardware system interface unit for external memory and host control. The 431-FCBGA package exposes a 64-bit external memory bus plus dedicated TDM, Ethernet, RS-232, JTAG, and timer pins, allowing designers to keep the part on a single SoC footprint while addressing multi-channel voice, fax, modem, and packet-processing workloads.
Typical applications include 4-channel V.90 modem banks, multi-channel voice-over-IP (VoIP) gateways, TDM cross-connect systems, media gateway controllers, and packet-voice DSP farms. The wide peripheral mix also makes the device useful in legacy wireless base-station channel cards and software-defined radio (SDR) front-end processing cards where deterministic MIPS budgets are mandatory.
When designing with this device, allocate careful attention to thermal management: the FCBGA package must be mounted on a multilayer PCB with a continuous ground/power plane beneath the die to meet the 500 MHz per-core clock budget. Decoupling should follow the reference design's capacitor count per power rail, and JTAG access must be brought out for boundary-scan and multi-core debug using the SC140-aware toolchain.
Bộ thay thế dễ dàng lắp đặt cho MSC8122VT8000 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
MSC8122VT8000
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MSC8122VT8000B
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MSC8122VT8000 Tỷ lệ tối đa & tính chất điện
| Architecture | StarCore SC140 quad-core (four extended DSP cores) |
| Core Clock Speed | 500 MHz |
| Internal SRAM M1 Memory | 1436 Kbytes total (224 Kbyte per core) |
| Instruction Cache | 16-way 16 Kbyte per core |
| Write Buffer | 4-entry per core |
| External Cache Support | Yes |
| Serial Interface | RS-232 |
| TDM Serial Interfaces | 4 |
| General-Purpose Timers | 32 |
| Ethernet Interface | On-chip Ethernet MAC |
| DMA Controller | Multi-channel DMA |
| System Interface Unit (SIU) | Flexible external memory and host control |
| Hộp | 431-FCBGA (FC-PBGA) 20x20 mm |
| Bit Size | 16-bit core, 32-bit extended |
Hướng dẫn cấu hình chân MSC8122VT8000 431-fcbga (fc-pbga) 20x20 mm
Cấu hình chân cho MSC8122VT8000 (431-fcbga (fc-pbga) 20x20 mm gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MSC8122VT8000.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MSC8122VT8000 phù hợp cho 6 Áp dụngs: Multi-Channel V.90 Modem Bank, Voice-over-IP (VoIP) Media Gateway, TDM Cross-Connect / PSTN Switch, Legacy Wireless Base-Station Channel Card, Software-Defined Radio Front-End, Industrial Packet-Inspection Appliance.
Multi-Channel V.90 Modem Bank
The MSC8122VT8000's quad SC140 cores at 500 MHz deliver enough MIPS to run four concurrent V.90 analog modem channels on a single chip. Each core's 224 Kbyte M1 SRAM holds a full DSP image plus per-channel buffers, while the four TDM serial interfaces connect directly to upstream framer/slicer devices. The on-chip Ethernet MAC lets a populated modem card attach to a LAN management plane without a companion NIC. This consolidation eliminates a multi-chip DSP farm in legacy DSLAM or remote-access equipment designs.
Được đề xuất
Voice-over-IP (VoIP) Media Gateway
Voice-over-IP media gateways require deterministic per-channel DSP budget for G.711/G.723/G.729 codecs, echo cancellation, and jitter buffering. The MSC8122VT8000's four cores each handle a stack of voice channels while sharing the 1436 Kbyte aggregate M1 SRAM, and its TDM ports interface directly to T1/E1 framers. Ethernet connectivity allows packet-side processing on the same chip. Real-time determinism is preserved because each core has its own instruction cache and write buffer.
Được đề xuất
TDM Cross-Connect / PSTN Switch
Public-switched telephone network cross-connects need a high-density timeslot switch fabric with deterministic latency. The MSC8122VT8000's four TDM serial interfaces each carry 32+ timeslots that can be reshuffled under SC140 firmware, while the multi-channel DMA controller offloads buffer management from the cores. System Interface Unit pins support external SRAM/SSRAM for timeslot lookup tables. Designers can cascade multiple MSC8122 chips to scale beyond a single 512-timeslot fabric without an external ASIC.
Được đề xuất
Legacy Wireless Base-Station Channel Card
In 2G/3G base-station channel cards, the MSC8122VT8000 runs uplink chip-rate, symbol-rate, and channel decoding DSP on separate SC140 cores with hard real-time guarantees. The 16-way 16 Kbyte instruction cache per core keeps the working set on-chip for deterministic cycle counts, while the Ethernet MAC uplinks decoded MAC frames to the baseband controller. Designers value the FCBGA's compact 20x20 mm footprint for high channel density on a single line card.
Được đề xuất
Software-Defined Radio Front-End
Software-defined radio implementations benefit from the MSC8122VT8000's mix of TDM serial interfaces (which can carry digitized IF data from a wideband ADC) and a programmable SC140 core fabric for demodulation chains. Each SC140 core runs an FFT or filter-bank kernel, while the DMA engine keeps data movement off the cores' critical paths. With Ethernet, the demodulated bitstream is forwarded to a host SDR controller. The 431-FCBGA package supports a single-SoC radio front-end per channel.
Được đề xuất
Industrial Packet-Inspection Appliance
Packet-inspection appliances and line-rate monitoring probes need per-packet DSP work for flow classification, header compression, and voice/video transcoding. The MSC8122VT8000's four SC140 cores offer enough thread-level parallelism to handle multiple 10/100 Ethernet streams in parallel, with Ethernet MAC plus DMA keeping packet movement off the cores. The 1436 Kbyte aggregate SRAM supports deep flow tables on-chip. The 32 general-purpose timers anchor per-flow scheduling without burdening the cores.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MSC8122VT8000 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MSC8122TVT8000 | MSC8122VT8000B |
|---|---|---|---|
| Brand | NXP Semiconductors (Freescale legacy) | NXP Semiconductors | NXP Semiconductors |
| Package | 431-FCBGA (20x20 mm) | 431-FCBGA (20x20 mm) - same | 431-FCBGA (20x20 mm) - same |
| Architecture | StarCore SC140 quad-core | StarCore SC140 quad-core | StarCore SC140 quad-core |
| Core Clock | 500 MHz per core | 500 MHz per core | 500 MHz per core |
| On-chip SRAM M1 | 1436 Kbyte total (224 Kbyte/core) | 1436 Kbyte total | 1436 Kbyte total |
| TDM Serial Interfaces | 4 | 4 | 4 |
| Ethernet MAC | On-chip | On-chip | On-chip |
| Lifecycle Status | Obsolete | Obsolete (temperature-grade variant) | Obsolete (silicon rev B) |
Bảo phân biệt quan trọng
- Quad SC140 cores on one die (vsMSC8152SVT1000B)
- On-chip Ethernet MAC (vsMSC8152SVT1000B)
- Four TDM serial interfaces (vsMSC8152SVT1000B)
Ghi chú thiết kế
The 431-FCBGA package dissipates significant heat at 500 MHz quad-core operation. Use a multilayer PCB with continuous ground and power planes beneath the die footprint and follow the reference design's via-in-pad pattern with filled and plated-over vias. Without proper thermal vias and board copper weight, junction temperature will exceed the rated maximum at full load and cause clock-throttling or failure.
Place at least the manufacturer-recommended count of decoupling capacitors directly beneath and adjacent to the FCBGA footprint, with short, wide traces to the balls. Use 0.1 uF and 0.01 uF ceramic capacitors in parallel for high-frequency noise suppression on each power rail (DVDD, CVDD, AVDD, etc.). The JTAG, RESET, and clock pins must be brought out to test points for boundary-scan and emulator access per the datasheet pinout section.
Do not assume the MSC8122VT8000 shares firmware with the MSC815x family - the boot loader and SC140 toolchain are different from the SC3850 toolchain. Verify date code and traceability when sourcing from independent brokers, as counterfeits of obsolete Freescale DSPs are common in the secondary market. Also note that lifecycle status is obsolete; plan for last-time-buy plus aftermarket inventory before committing to a new design.
The 64-bit external memory bus and TDM serial interfaces can exhibit ringing on long PCB traces. Maintain 50 ohm controlled-impedance routing for the memory bus and use length-matched differential pairs for the TDM clock and frame-sync lines. Add source-series termination on heavily-loaded address and data lines if the reference design's terminator count is insufficient for the chosen PCB stack-up.
Thông tin tuân thủ
RoHS/REACH/lead-free status not present in Verified Web Data; classified as unknown per Data Authenticity Rule. AEC-Q100 not applicable (telecom/industrial DSP SoC).
