ST AEKD-USBTYPEC1 Manuale utente

Introduction

The USB Power Delivery evaluation kit is designed to help you evaluate the functions of the USB Power Delivery protocol stack

implemented on the SPC58EC80E5 Chorus line of 32-bit automotive microcontrollers based on Power Architecture®

technology, with 4 MB of flash memory.

You can also use the AEKD-USBTYPEC1 to prototype USB Power Delivery solutions to power compatible consumer devices

via the USB Type-C™ ports.

Figure 1. AEKD-USBTYPEC1 USB Power Delivery evaluation kit

How to use the AEKD-USBTYPEC1 USB Power Delivery evaluation kit

UM2451

User manual

UM2451 - Rev 1 - August 2018

For further information contact your local STMicroelectronics sales office.

www.st.com

1Evaluation kit overview

The AEKD-USBTYPEC1 kit consists of:

•An AEK-USB-2TYPEC1 dual-port USB Type-C interface board.

• An SPC58EC-DISP discovery board hosting a SPC58EC80E5 Chorus line 4 MB flash memory, 32-bit

automotive microcontroller.

• A 1-Amp 12-Volt power supply for the SPC58EC-DISP board.

• A mini-B USB to USB Type-A cable to connect the MCU programmer.

• A USB Type-C to USB Type-C cable (not electronically marked).

• The STSW-USB2TYPEC1 flash image firmware and the related software package.

Figure 2. AEKD-USBTYPEC1 kit

The AEK-USB-2TYPEC1 interface board hosts a pair of STUSB1702Y automotive grade USB Type-C controllers;

one for each USB Type-C port. The board contains a dual Transil™ array ESDA25LY and very low capacitance

USBLC6-2SC6Y devices for ESD protection. The status of the ports is signaled on the board through a set of

LEDs for each port. The board includes about 20 test points.

The main devices on the board are the STUSB1702Y USB Type-C controller with Tx/Rx line driver and bi-phase

marked coding (BMC), and the physical layer (PHY) protocol for USB Power Delivery stack.

The AEKD-USBTYPEC1 kit supports a 5 V, 500 mA PDO based on the electrical characteristics of the SPC58EC-

DISP. To extend the range of PDOs, you can add an external power board, not included in the kit.

The software package contains the following elements:

• The firmware for the SPC58EC-DISP discovery board (already pre-loaded on the board).

• A complex driver for the STUSB1702Y USB Type-C controller.

• An SPC5-STUDIO library plugin with the USB Power Delivery software stack.

• A demo application with predefined 5 V 500 mA PDO.

The standard USB Type-C cable provided in the kit is not electronically marked. It is not suitable for currents

above 3 A and does not support USB 3.1 Gen1 or Gen2 signaling.

The USB Power Delivery Consumer role device may be a compatible mobile phone or a tablet accepting a 5 V,

500 mA PDO. You can add an external Power Board to increase the range of available PDOs. Alternatively, you

can use the P-NUCLEO-USB002 demo kit as a consumer device.

RELATED LINKS

3 Software package with firmware and USB PD project on page 10

http://www.usb.org/home

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Evaluation kit overview

UM2451 - Rev 1 page 2/22

1.1 LED signals

Figure 3. Port status LEDs on the AEK-USB-2TYPEC1

The AEK-USB-2TYPEC1 interface board has the following status LEDs for each port:

1. Role: emits a continuous variable blue flashing light at about 1Hz indicating the device is a provider.

2. VBUS: emits a constant green light when the power negotiation has completed (i.e., the Explicit condition is

reached). The provider can now begin to supply the negotiated power to the consumer.

3. CC: emits different orange flashing sequences to indicate the following conditions:

a. flashes at about 1Hz: CC1 line is connected.

b. flashes twice followed by a pause: CC2 line is connected.

Note: The connected Configuration Channel (CC) indicates the direction of the USB cable connection, given the cable

reversibility allowed by the USB Type-C standard.

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LED signals

UM2451 - Rev 1 page 3/22

2How to use the AEKD-USBTYPEC1 kit

Step 1. Plug the AEK-USB-2TYPEC1 board on the SPC58EC-DISP

The AEK-USB-2TYPEC1 is plugged into the 4x37 male pin connector of the SPC58EC-DISP board via

the 4x20 female pin connector from pins A18 to D37 (refer to pin numbering indications on the board).

Figure 4. AEKD-USBTYPEC1 plugged on SPC58EC-DISP

Step 2. Connect the 1-Amp 12-Volt power supply plug into the socket located on the SPC58EC-DISP and then

turn on the board.

Figure 5. Voltage supply socket and power switch on SPC58EC-DISP

After about 5 seconds, the ROLE LED on the AEK-USB-2TYPEC1 board should start blinking at rate of

1 Hz to indicate the board is a provider.

Step 3. Connect a consumer to a USB Type-C port

You can connect one or two consumers to one or both USB Type-C ports. The USB Type-C ports

supply 5 V each and 500 mA in total for both ports.

UM2451

How to use the AEKD-USBTYPEC1 kit

UM2451 - Rev 1 page 4/22

Power negotiation begins when the consumer is connected. If the negotiation concludes successfully (i.e., the

“Explicit” condition is reached), the VBUS LED VBUS emits a green light.

If the consumer has a compatible PDO but it is not able to reach the “Explicit” condition, try to:

•Use another USB Type-C port on the consumer device, if available.

• Disconnect and reconnect the USB Type-C cable.

• Switch the SPC58EC-DISP board off and on and try to connect the Consumer device again.

• Try a different USB Type-C cable.

2.1 Pin mappings for an external power board

The power negotiation protocol between consumer and provider agrees on a PDO that is actuated on a power

board (not included in the kit).

The microcontroller on the SPC58EC80E5 board can direct the power supplied by an external power board

through GPIOs on the male connector on the AEK-USB-2TYPEC1 interface board.

Note: The external power board you use must be compatible with the consumer power requirements.

If the desired voltage is not provided within the time-out interval specified in the USB Power Delivery protocol, the

STUSB1702Y informs the microcontroller that the voltage output in the port is not actuated and the

microcontroller resets the system and starts power negotiation again.

Note: The connection of the external power board may require modifications in the software stack.

Communication between the STUSB1702Y and microcontroller is based on SPI protocol, where the

STUSB1702Y has the master role in the communication.

The following figure shows the 4x37 connector on the SPC58EC-DISP board. The portion occupied by the AEK-

USB-2TYPEC1 is zoomed to show the pins for the external power board (in green) and for the interface board (in

blue).

UM2451

Pin mappings for an external power board

UM2451 - Rev 1 page 5/22

Figure 6. Pin mapping of the AEK-USB-2TYPEC1 connectors

Connectors CN1 (4x20 male pin connector) and CN2 (2x9 male pin connector) are located on the opposite side of

the USB Type-C ports. CN1 is for the control signals and CN2 is for the power supply. In the figure, the green

cells in CN1 represent the pins to drive the external power board. The cell labels starting with “Pxx” represent the

microcontroller ports mapped to the 4x37 connector. The microcontroller ports can assume different functions

depending on the register settings of a specific microcontroller.

The following table contains the descriptions of the interface board pins.

Table 1. AEK-USB-2TYPEC1 4x20 connector interface board pin descriptions

Pin Name Description

ADC_I_0 ADC channel to convert the current value provided by VBUS on to port 0.

ADC_I_1 ADC channel to convert the current value provided by VBUS on to port 1.

ADC_V_0 ADC channel to convert the voltage value (VBUS) applied to port 0.

ADC_V_1 ADC channel to convert the voltage value (VBUS) applied to port 1.

ALERT_0 Alert pin of STUSB1702Y device managing port 0

ALERT_1 Alert pin of STUSB1702Y device managing port 1

LED01(1) To command the LED “ROLE” for port0

LED11(2) To command the LED “ROLE” for port1

LED02 To command the LED “VBUS” for port0

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Pin mappings for an external power board

UM2451 - Rev 1 page 6/22

Pin Name Description

LED12 To command the LED “VBUS” for port1

LED03 To command the LED “CC” for port0

LED13 To command the LED “CC” for port1

MISO_0 Master Input Slave Output (MISO) of SPI protocol for port 0

MISO_1 Master Input Slave Output (MISO) of SPI protocol for port 1

MOSI_0 Master Output Slave Input (MOSI) of SPI protocol for port 0

MOSI_1 Master Output Slave Input (MOSI) of SPI protocol for port 1

NSS_0 Slave Select (NSS) of SPI protocol for port 0

NSS_1 Slave Select (NSS) of SPI protocol for port 1

SCK_0 Serial Clock (SCK) of SPI protocol for port 0

SCK_1 Serial Clock (SCK) of SPI protocol for port 1

SCL Serial Clock of I2C

SDA Serial Data of I2C

RESET 0 Used to reset the STUSB1702Y for port 0

RESET 1 Used to reset the STUSB1702Y for port 1

TX_EN_0 Used by slave to ask master to start the SPI communication for port 0 by resetting the NSS pin

TX_EN_1 Used by slave to ask master to start the SPI communication for port 1 by resetting the NSS pin

1. It is recommended to remove the jumper from the jumper pins JP46 on the SPC58EC_DISP board.

2. It is recommended to remove the jumper from the jumper pins JP48 on the SPC58EC_DISP board.

The following table shows the mapping between the external power board pins and the microcontroller ports. The

table also shows the functions that can be assigned to each pin. Only one function can be mapped to a single

microcontroller port at a time.

Table 2. AEK-USB-2TYPEC1 4x20 connector power board pin description

Pin name Port #

Function[module instance]

GPIO (1) CAN SPI ADC (12 bit) (2) LIN Timer (3)

G/P_01 PD[4] GPIO52 RX[1]

RX[3]

SCK[0]

SCK[7] - TXD[3] UC6

UC4

G/P_02 PB[11] GPIO27 - CS0[0]

CS2[2] - RXD[2] UC24

UC5

G/P_03 PM[2] GPIO194 RX[6] SOUT[1] - - UC9

G/P_04 PC[2] GPIO34

EIRQ10 - - - TXD[15] UC8

UC10

G/P_05 PE[6] GPIO70 RX[0] CS1[0]

CS1[1] - RXD[1] UC4

UC2

G/P_11 PF[2] GPIO82

EIRQ6 RX[6]

CS2[1]

SOUT[1]

SOUT[3]

INJ_TRG

NOR_TRG

RXD[2]

RXD[8]

UC20

UC12

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Pin mappings for an external power board

UM2451 - Rev 1 page 7/22

Pin name Port #

Function[module instance]

GPIO (1) CAN SPI ADC (12 bit) (2) LIN Timer (3)

G/P_12 PH[1] GPIO113 RX[3]

SCK[2]

CS0[6]

SOUT[6]

SIN[6]

- RXD[6] UC15

G/P_13 PD[12] GPIO60 -

CS7[0]

SIN[3]

SOUT[3]

SIN[4]

SOUT[4]

SIN[6]

EXT_DEC0

ANS[15]

ANF[15]

TXD[14] UC14

UC16

G/P_14 PK[1] GPIO161 - SCK[4] - - UC24

G/P_15 PE[5] GPIO69 TX[0]

CS0[0]

CS0[1]

CS0[7]

- RXD[15] UC3

UC1

GPI_01 PI[7] GPIO135 - - ANS[50]

ANF[50] - -

GPI_02 PB[6] GPIO22 - - ANS[48]

ANF[48] - -

GPI_03 PG[6] GPIO102 - - ANS[44]

ANF[44] - -

GPI_11 PI[4] GPIO132 - - ANS[40]

ANF[40] - -

GPI_12 PG[9] GPIO105 - - ANS[53]

ANF[53] - -

GPI_13 PB[7] GPIO23 - - ANS[47]

ANF[47] - -

UART_TX PF[14] GPIO94

EIRQ17 - - - TXD[5]

TXD[14] UC26

UART_RX PE[2] GPIO66

EIRQ11-

CS3[3]

SIN[3]

SIN[4]

SOUT[3]

SOUT[4]

ANS[13]

ANF[13] RXD[5] UC13

UC15

1. GPIO = General Purpose I/O; EIRQ = External interrupt.

2. INJ_TRG = Injected Conversion Trigger; NOR_TRG = Normal Conversion Trigger; EXT_DEC = External Decoder Address;

ANS[x] = Standard Analog Channel x; ANF[x] = Fast Analog Channel x

3. Enhanced Modular IO Subsystem (eMIOS) provides functionality to generate or measure time events on up to 32 unified

channels (UCs).

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