1. HPM6750EVK2

1.1. Overview

The HPM6750 is a dual-core flashless MCU running 816Mhz. It has a 2MB continuous on-chip ram. Also, it provides various memory interfaces, including SDRAM, Quad SPI NOR Flash, SD/eMMC. It integrates rich audio and video interfaces, including LCD, pixel DMA, camera， and I2S audio interfaces.

hpm6750evk2

1.2. Hardware

  • HPM6750IVM MCU (816MHz, 2MB OCRAM)

  • Onboard Memory

    • 256Mb SDRAM

    • 128Mb Quad SPI NOR Flash

  • Display & Camera

    • LCD connector

    • Camera (DVP)

  • Ethernet

    • 1000 Mbits PHY

    • 100 Mbits PHY

  • USB

    • USB type C (USB 2.0 OTG) connector x3

  • Audio

    • Line in

    • Mic

    • DAO

  • Others

    • TF Slot

    • RGB LED

    • CAN

  • Expansion port

    • Motor control

1.3. DIP Switch S1

  • Bit 1 and 2 controls boot mode

bit[2:1]

Description

OFF, OFF

Boot from Quad SPI NOR flash

OFF, ON

Serial boot

ON, OFF

ISP

1.4. Button

Name

FUNCTIONS

PBUTN (SW1)

Power Button, TinyUF2 Boot Button, GPIO Button

WBUTN (SW2)

WAKE UP Button

RESETN (SW3)

Reset Button

1.5. Plug-in

  • The ADC/DAC reference voltage is selected as follows:

    Connection

    Description

    J108[2, 3]

    Reference voltage

1.6. Resistor Switch

  • GigE POP R177-R182

    Status

    Description

    Welding

    Network

    Disconnect

    Motor

1.7. Pin Description

  • UART0 Pin:

The UART0 pin leads to three positions:

Function

Pin

Position1

Position2

Position3

UART0.TX

PY06

J109[1]

JTAG P4[7]

USB2UART0

UART0.RX

PY07

J109[3]

JTAG P4[9]

USB2UART0

**Note:**To avoid abnormal functions caused by multiple connections, please ensure that there is only one connection. For example, if the JTAG interface is connected to UART0, USB2UART0 interface send data to UART0 will be abnormal.

  • UART13 Pin：

The UART13 is used for core1 debug console or some functional testing using UART, such as uart_software_rx_idle, uart_rx_timeout, uart_software_lin, MICROROS_UART, USB_CDC_ACM_UART, MODBUS_RTU etc.

Function

Pin

Position

Remark

UART13.TXD

PZ09

J11[5]

UART13.RXD

PZ08

J11[6]

UART13.break

PE31

J11[7]

generate uart break signal

  • TRGMUX pin for uart_software_rx_idle sample

Function

Position

TRGM2_P9(PD19)

J10[20]

  • SPI Pin：

Function

Pin

Position

SPI2.CSN

PE31

J11[7]

SPI2.SCLK

PE27

J11[8]

SPI2.MISO

PE28

J11[9]

SPI2.MOSI

PE30

J11[10]

  • I2C Pin：：

Function

Pin

Position

I2C0.SCL

PZ11

J11[3]

I2C0.SDA

PZ10

J11[4]

  • PWM Pin:

Function

Pin

Position

PWM2.P[0]

PD31

J10[14]

PWM2.P[1]

PD30

J10[13]

  • ACMP Pin

Function

Pin

Position

CMP.INN6

PE21

J10[8]

CMP.COMP_1

PE25

J10[6]

  • GPTMR Pin

Function

Pin

Position

Remark

GPTMR4.CAPT_1

PE25

J10[6]

GPTMR3.COMP_1

PE24

J10[8]

MCLK of i2s emulation

GPTMR5.COMP_2

PD24

J10[18]

LRCK of i2s emulation

GPTMR5.COMP_3

PD23

J10[16]

BLCK of i2s emulation

  • ADC12 Pin

Function

Pin

Position

Reference Voltage

VREFH

J108[2]

ADC0.VINP11

PE25

J10[6]

  • ADC16 Pin

Function

Pin

Position

Reference Voltage

VREFH

J108[2]

ADC3.INA2

PE29

J10[5]

  • headphone interface

Function

Position

Standard

3.5mm headphone

J13

OMTP

  • audio input interface

Function

Position

microphone

P3

  • DAO interface

Function

Position

DAO-SPK

J12

  • Ethernet PPS Pin

Function

Pin

Position

ENET0.EVTO0

PF05

U11[3]

ENET0.EVTI1

PE25

J10[6]

  • Motor Pin:

    Need to remove all the resistors selected by GigEPOP silkscreen and make sure all the resistors selected by MOTOR POP silkscreen are soldered, the development board list is as follows.

    Using the high-frequency injection demo, need to remove PWM ground resistors R436-R441.

    Refer to section DRV-LV50A-MP1907 Motor Driver Board for configuration

  • Tamper Pin

Function

Pin

Position

Mode

TAMP.08

PZ08

J11[6]

Active Mode

TAMP.09

PZ09

J11[5]

Active Mode

TAMP.10

PZ10

J11[4]

Passive Mode

  • CS Pin of i2s emulation

Function

Position

Remark

PD25

J10[16]

the pin that controls the SPI slave CS