ST STEVAL－PCC010V2以太网100BASE－TX与10BASE－T解决方案

2012年07月23日 14:59 发布者：1770309616

ST公司的STEVAL-PCC010V2是采用ST802RT1A以太网收发器和STM32F207高性能ARM® Cortex™-M3 32位MCU的以太网评估板, 包括ST802RT1A Ethernet PHY演示板和STM32F207控制器演示板,具有快速以太网PHY接口,支持100BASE-TX和 10BASE-T应用.本文介绍了STM32F20x系列MCU主要特性和方框图,ST802RT1x收发器主要特性和方框图,以及STEVAL-PCC010V2评估板主要特性,电路图和材料清单,PCB布局图.

The STM32F20x family is based on the high-performance ARM® Cortex™-M3 32-bit RISC core operating at a frequency of up to 120 MHz. The family incorporates high-speed embedded memories (Flash memory up to 1 Mbyte, up to 128 Kbytes of system SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.

The devices also feature an adaptive real-time memory accelerator (ART Accelerator™) which allows to achieve a performance equivalent to 0 wait state program execution from Flash memory at a CPU frequency up to 120 MHz. This performance has been validated using the CoreMark benchmark.

All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers. a true number random generator (RNG). They also feature standard and advanced communication interfaces. New advanced peripherals include an SDIO, an enhanced flexible static memory control (FSMC) interface (for devices offered in packages of 100 pins and more), and a camera interface for CMOS sensors. The devices also feature standard peripherals.

● Up to three I2Cs

● Three SPIs, two I2Ss. To achieve audio class accuracy, the I2S peripherals can be clocked via a dedicated internal audio PLL or via an external PLL to allow synchronization.

● 4 USARTs and 2 UARTs

● A USB OTG full-speed with high-speed capability (with the ULPI)

● A second USB OTG (full-speed)

● Two CANs

● An SDIO interface

● Ethernet and camera interface available on STM32F207xx devices only.

STM32F20x主要特性:

■ Core: ARM 32-bit Cortex™M3 CPU with Adaptive real-time accelerator (ART Accelerator™ allowing 0-wait state execution performance from Flash memory, frequency up to 120 MHz, memory protection unit, 150 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1)

■ Memories

– Up to 1 Mbyte of Flash memory

– 512 bytes of OTP memory

– Up to 128 + 4 Kbytes of SRAM

– Flexible static memory controller that supports Compact Flash, SRAM, PSRAM, NOR and NAND memories

– LCD parallel interface, 8080/6800 modes

■ Clock, reset and supply management

– From 1.65 to 3.6 V application supply and I/Os

– POR, PDR, PVD and BOR

– 4 to 26 MHz crystal oscillator

– Internal 16 MHz factory-trimmed RC (1% accuracy at 25 °C)

– 32 kHz oscillator for RTC with calibration

– Internal 32 kHz RC with calibration

■ Low power

– Sleep, Stop and Standby modes

– VBAT supply for RTC, 20 × 32 bit backup registers, and optional 4 KB backup SRAM

■ 3 × 12-bit, 0.5 μs A/D converters

– up to 24 channels

– up to 6 MSPS in triple interleaved mode

■ 2 × 12-bit D/A converters

■ General-purpose DMA

– 16-stream DMA controller with centralized FIFOs and burst support

■ Up to 17 timers

– Up to twelve 16-bit and two 32-bit timers, up to 120 MHz, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input

■ Debug mode

– Serial wire debug (SWD) & JTAG interfaces

– Cortex-M3 Embedded Trace Macrocell™

■ Up to 140 I/O ports with interrupt capability:

– Up to 136 fast I/Os up to 60 MHz

– Up to 138 5 V-tolerant I/Os

■ Up to 15 communication interfaces

– Up to 3 × I2C interfaces (SMBus/PMBus)

– Up to 4 USARTs and 2 UARTs (7.5 Mbit/s, ISO 7816 interface, LIN, IrDA, modem control) – Up to 3 SPIs (30 Mbit/s), 2 with muxed I2S to achieve audio class accuracy via audio PLL or external PLL

2 × CAN interfaces (2.0B Active)

– SDIO interface

■ Advanced connectivity

– USB 2.0 full-speed device/host/OTG controller with on-chip PHY

– USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-chip full-speed PHY and ULPI

– 10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v2 hardware, MII/RMII

■ 8- to 14-bit parallel camera interface: up to 48 Mbyte/s

■ CRC calculation unit

■ 96-bit unique ID

■ Analog true random number generator

A comprehensive set of power-saving modes allow the design of low-power applications.STM32F205xx and STM32F207xx devices are offered in four packages ranging from 64 pins to 176 pins. The set of included peripherals changes with the device chosen.These features make the STM32F205xx and STM32F207xx microcontroller family suitable for a wide range of applications:

● Motor drive and application control

● Medical equipment

● Industrial applications: PLC, inverters, circuit breakers

● Printers, and scanners

● Alarm systems, video intercom, and HVAC

● Home audio appliances

图1.STM32F20x系列方框图

The ST802RT1x is a high-performance fast Ethernet physical layer interface for 10Base-T, 100Base-TX and 100Base-FX applications. It is designed using advanced CMOS technology to provide MII and RMII interfaces for easy attachment to 10/100 media access controllers (MAC). The ST802RT1x supports the 100Base- TX of IEEE802.3u and 10Base-T of IEEE802.3i and 100Base FX of IEEE 802.3u (B version only).

The ST802RT1x supports both half-duplex and full-duplex operation at 10 and 100 Mbps operation. Its operating mode can be set using auto-negotiation, parallel detection or manual control. It allows for the support of autonegotiation functions for speed and duplex detection. The automatic MDI / MDIX feature compensates for the use of a crossover cable.

With auto MDIX, the ST802RT1x automatically detects what is on the other end of the network cable and switches the TX & RX pin functionality Accordingly.

ST802RT1x主要特性:

■ IEEE802.3 10Base-T and IEEE802.3u 100Base-TX, 100Base-FX (ST802RT1B only) transceiver

■ Support for IEEE802.3x flow control

■ Provides full-duplex operation in both 100 Mbps and 10 Mbps modes

■ Register bit strap during HW reset

■ Auto MDI-X for 10/100 Mb/s

■ Auto-negotiation

■ Provides loop-back mode for diagnostics

■ Programmable LED display for operating mode

and functionality signaling

■ MII / RMII interface

■ MDC / MDIO serial management interface

■ Optimized deterministic latency for real-time

Ethernet operation

■ Supports external transformer with turn ratio

1.414:1 on Tx/Rx side

■ Self-termination transceiver for external

components and power saving

■ Operation from single 3.3 V supply

■ High ESD tolerance

■ 48-pin LQFP 7 x 7 package

■ Extended temp. range: -40 °C to +105 °C

■ Power dissipation < 315 mW (typ)

ST802RT1x应用:

■ Industrial control

■ Factory automation

■ High-end peripherals

图2.ST802RT1x 系列框图

STEVAL-PCC010V2评估板

The STEVAL-PCC010V2 demonstration board is an evolution of the STEVAL-PCC010V1 and was designed to allow evaluation of the ST802RT1A, Fast Ethernet physical layer (PHY) interface supporting 100BASE-TX and 10BASE-T applications.

The PHY provides a media independent interface (MII) and reduced media independent interface (RMII) for easy attachment to a 10/100 media access controllers (MAC).

Many jumpers, test points, and connectors on the demonstration board enable to test the features provided by the ST802RT1A Ethernet PHY. An additional header connector allows connection to the STM32F207 controller demonstration board for an immediate evaluation of the complete application – microcontroller and the physical layer.

The controller board is pre-flashed with a web server demo.

The STM32F207 controller demonstration board is part of the STEVAL-PCC010V2 package delivery.

STEVAL-PCC010V2评估板主要特性:

ST802RT1A Ethernet PHY演示板:

■ ST802RT1A Fast Ethernet physical layertransceiver

■ Onboard 3.3 V LDO regulator

■ Onboard 25 MHz crystal

■ 12 jumpers for boot-strap configuration (MII address, auto-negotiation, loopback, power
down, and MII/RMII configuration)

■ Several GND test points and jumpers for power consumption measurement

■ Connectors

– 20-pin full pitch header connector for debug purposes (compatible with the STM32F207 controller board)

– RJ45 connector with embedded transformer

– 40-pin connector footprint compatible with the spirent communications SmartBits 200/2000 (SMB-200/ SMB-2000) analysis system (connector is not assembled)

STM32F207控制器演示板:

■ STM32F207 Connectivity Line Cortex-m3 based microcontroller with embedded Ethernet MAC

■ Onboard 3.3 V LDO regulator

■ Onboard 25 MHz crystal

■ Reset button, power LED, general-purpose button, and two LEDs

■ Connectors:

– 20-pin full pitch header connector for debug purposes and compatibility with the ST802RT1A demonstration board

– 20-pin JTAG connector

Additional general purpose 20-pin full pitch header connector

– USB device connector (+5 V0 Power supply)