ST公司的SPEAr1340是SPEAr®(結構處理器增強架構)系列微處理器的系統(tǒng)級芯片(SoC),CPU子系統(tǒng)采用高達600MHz的2x ARM Cortex A9核,每個核有32+32 KB L1高速緩存,共享的512KB L2高速緩存,高達166MHz的片上網(wǎng)絡總線矩陣, 32KB引導ROM,32+4KB靜態(tài)RAM,主要用于低成本平板電腦,薄型客戶端,媒體手機和工業(yè)/打印機智能屏.本文介紹了SPEAr1340主要特性,架構框圖以及EVALSP1340CPU評估板主要特性,框圖,電路圖,材料清單和PCB布局圖.
The SPEAr1340 device is a system-on-chip belonging to the SPEAr® (Structured Processor Enhanced Architecture) family of embedded microprocessors. The product is suitable for consumer and professional applications where an advanced human machine interface (HMI) combined with high performance are required, such as low-cost tablets, thin clients, media phones and industrial/printer smart panels.
The device is hardware-compliant to the support of both real-time (RTOS) and high-level (HLOS) operating systems, such as Android, Linux and Windows Embedded Compact 7.
The architecture of SPEAr1340 is based on several internal components, communicating through a multilayer interconnection matrix (BUSMATRIX). This switching structure enables different data flows to be carried out concurrently, improving the overall platform efficiency.
In particular, high-performance master agents are directly interconnected with the DDR memory controller in order to reduce access latency. The overall memory bandwidth assigned to each master port can be programmed and optimized through an internal weighted round-robin (WRR) arbitration scheme.
SPEAr1340主要特性:
■ CPU subsystem:
– 2x ARM Cortex A9 cores, up to 600 MHz
– 32+32 KB L1 caches per core, with parity check
– Shared 512 KB L2 cache
– Accelerator coherence port (ACP)
■ Network-on-chip bus matrix, up to 166 MHz
■ 32 KB Boot ROM, 32+4 KB Static RAMs
■ Memory interfaces:
– DDR controller (DDR3-1066, DDR2-800), 16-/32-bit, up to 2 GB address space
– Serial NOR Flash controller
– Parallel NAND Flash/NOR Flash/SRAM controller
■ Connectivity:
– 2 x USB 2.0 Host ports (integrated PHY)
– 1 x USB 2.0 OTG port (integrated PHY)
– 1 x Giga/Fast Ethernet port (external GMII/ RGMII/MII/RMII PHY)
– 1 x PCIe 2.0 RC/EP port (integrated PHY)
– 1 x 3Gb/s Serial ATA Host port (integrated PHY)
– 1 x memory card interface: SDIO/MMC, CF/CF+, xD
– 2 x UART ports, with IrDA option
– 2 x I2C bus controllers, master/slave
– 1 x synchronous serial port, SPI/Microwire/TI protocols, master/slave
– 2 x consumer electronic control (HDMI CEC) ports
– 10-bit ADC: 8 channels, 1 Msps, with autoscan
– Programmable bidirectional GPIO signals with interrupt capability
■ HMI support:
– LCD display controller, up to 1920 x 1200, 60 Hz, 24 bpp
High-performance 2D/3D GPU, up to 1080p
– Hardware video decoder: multistandard up to 1080p, JPEG
– Hardware video encoder: H.264 up to 1080p, JPEG
– Video input parallel port, with alternate configuration for 4 x camera interfaces – Digital audio ports: up to 7.1 multichannel surround, I2S (8 in, 8 out) and S/PDIF – 6 x 6 keyboard controller
– Resistive touchscreen interface
■ Security:
– Cryptographic co-processor: DES, 3DES, AES, HMAC, PKA, RNG
■ Miscellaneous functions:
– Energy saving: power islands, clock gating, dynamic frequency scaling
– 2 x DMA controllers (total 16 channels)
– 11 x general purpose timers, 2 x watchdogs, 1 x real-time clock
– 4 x PWM generators
– Embedded sensor for junction temperature monitoring
OTP (one-time programmable) bits
– Debug and trace interfaces: JTAG/PTM
圖1.SPEAr1340架構框圖
EVALSP1340CPU評估板
This evaluation board is intended to be used to:
● enable quick evaluate and debugging of software for the SPEAr1340 embedded MPU
● act as a learning tool for rapid familiarity with the features of the SPEAr1340
● provide a reference design to use as a starting point for the development of a final application board
The EVALSP1340CPU board is equipped with interfaces to the high-speed peripherals embedded in SPEAr1340 device.
圖2.EVALSP1340CPU評估板外形圖
EVALSP1340CPU評估板主要特性:
● SPEAr1340 embedded MPU
● 4 DDR3 chips (32-bit) 1 GB
● Serial NOR Flash, 8 MB
● 8-bit NAND Flash, 2 Gb
● 16-bit NAND Flash expansion connector
● Audio stereo jack and microphone
● Two USB 2.0 high speed host ports
● One OTG 2.0 high speed port (Micro USB-AB)
● One 10/100/1000 Ethernet port
● One PCIe X1 Root Complex connector
● One SATA connector
● One SDIO connector
● One UART serial port (up to 115 Kbaud)
● LCD connectors (LVDS bus - TFT panel)
● Camera module
● MEMS (accelerometer & magnetometer)
● Debug port (CPU JTAG connector)
Optional
● 10" LCD kit - order code EVALSP1340LCD
● CLCD Video HDMI transmitter plugboard - order code EVALSP1340HDM
圖3.EVALSP1340CPU評估板方框圖
圖4.EVALSP1340CPU評估板電路圖(1)
圖5.EVALSP1340CPU評估板電路圖(2)
圖6.EVALSP1340CPU評估板電路圖(3)
圖7.EVALSP1340CPU評估板電路圖(4)
圖8.EVALSP1340CPU評估板電路圖(5)
圖9.EVALSP1340CPU評估板電路圖(6)
圖10.EVALSP1340CPU評估板電路圖(7)
圖11.EVALSP1340CPU評估板電路圖(8)
圖12.EVALSP1340CPU評估板電路圖(9)
圖13.EVALSP1340CPU評估板電路圖(10)
圖14.EVALSP1340CPU評估板電路圖(11)
圖15.EVALSP1340CPU評估板電路圖(12)
圖16.EVALSP1340CPU評估板電路圖(13)
圖17.EVALSP1340CPU評估板電路圖(14)
圖18.EVALSP1340CPU評估板電路圖(15)
圖19.EVALSP1340CPU評估板電路圖(16)
圖20.EVALSP1340CPU評估板電路圖(17)
EVALSP1340CPU評估板材料清單:
圖21.EVALSP1340CPU評估板元件布局圖(1)
圖22.EVALSP1340CPU評估板元件布局圖(2)
圖23.EVALSP1340CPU評估板元件布局圖(3)
詳情請見:
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/DM00052367.pdf
和
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/DM00049696.pdf
以及
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_DIAGRAM/SCHEMATICPACK/evalsp1340cpu_schematics.pdf
