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A2F060M3D-PQ208Y

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型号: A2F060M3D-PQ208Y
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功能描述: SmartFusion Customizable System-on-Chip (cSoC)
PDF文件大小: 11779.94 Kbytes
PDF页数: 共192页
制造商: MICROSEMI[Microsemi Corporation]
制造商LOGO: MICROSEMI[Microsemi Corporation] LOGO
制造商网址: http://www.microsemi.com
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Revision 10 1-1
1 – SmartFusion Family Overview
Introduction
The SmartFusion
®
family of cSoCs builds on the technology first introduced with the Fusion mixed signal
FPGAs. SmartFusion cSoCs are made possible by integrating FPGA technology with programmable
high-performance analog and hardened ARM Cortex-M3 microcontroller blocks on a flash semiconductor
process. The SmartFusion cSoC takes its name from the fact that these three discrete technologies are
integrated on a single chip, enabling the lowest cost of ownership and smallest footprint solution to you.
General Description
Microcontroller Subsystem (MSS)
The MSS is composed of a 100 MHz Cortex-M3 processor and integrated peripherals, which are
interconnected via a multi-layer AHB bus matrix (ABM). This matrix allows the Cortex-M3 processor,
FPGA fabric master, Ethernet message authentication controller (MAC), when available, and peripheral
DMA (PDMA) controller to act as masters to the integrated peripherals, FPGA fabric, embedded
nonvolatile memory (eNVM), embedded synchronous RAM (eSRAM), external memory controller
(EMC), and analog compute engine (ACE) blocks.
SmartFusion cSoCs of different densities offer various sets of integrated peripherals. Available
peripherals include SPI, I
2
C, and UART serial ports, embedded FlashROM (EFROM), 10/100 Ethernet
MAC, timers, phase-locked loops (PLLs), oscillators, real-time counters (RTC), and peripheral DMA
controller (PDMA).
Programmable Analog
Analog Front-End (AFE)
SmartFusion cSoCs offer an enhanced analog front-end compared to Fusion devices. The successive
approximation register analog-to-digital converters (SAR ADC) are similar to those found on Fusion
devices. SmartFusion cSoC also adds first order sigma-delta digital-to-analog converters (SDD DAC).
SmartFusion cSoCs can handle multiple analog signals simultaneously with its signal conditioning blocks
(SCBs). SCBs are made of a combination of active bipolar prescalers (ABPS), comparators, current
monitors and temperature monitors. ABPS modules allow larger bipolar voltages to be fed to the ADC.
Current monitors take the voltage across an external sense resistor and convert it to a voltage suitable
for the ADC input range. Similarly, the temperature monitor reads the current through an external PN-
junction (diode or transistor) and converts it internally for the ADC. The SCB also includes comparators
to monitor fast signal thresholds without using the ADC. The output of the comparators can be fed to the
analog compute engine or the ADC.
Analog Compute Engine (ACE)
The mixed signal blocks found in SmartFusion cSoCs are controlled and connected to the rest of the
system via a dedicated processor called the analog compute engine (ACE). The role of the ACE is to
offload control of the analog blocks from the Cortex-M3, thus offering faster throughput or better power
consumption compared to a system where the main processor is in charge of monitoring the analog
resources. The ACE is built to handle sampling, sequencing, and post-processing of the ADCs, DACs,
and SCBs.
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