Hardware connection. STMicroelectronics STM32 F0 Entry-level

Hardware environment AN4066

To run the CEC demo, you must connect the HDMI connector (CN3 or CN4) of the

STM320518-EVAL evaluation board to another HDMI device (TV, recording device...) using an HDMI cable.

The CN3 connector is allocated to the sink device, but the CN4 connector is allocated to the source device.

Figure 12. Example of hardware connections

Note: You can connect the STM320518-EVAL evaluation board to other STM320518-EVAL evaluation boards using HDMI cables or using a simple wire between all CEC device lines

(PB.10). In this case, do not forget to connect all board grounds together.

Table 5.

STM32F0xx and HDMI-CEC connection

HDMI-CEC pins STM320518-EVAL Configuration

CEC line pin

CEC_SINK_I2C_SCL

CEC_SINK_I2C_SDA

CEC_HPD_SINK

CEC_SOURCE_I2C_SCL

CEC_SOURCE_I2C_SDA

CEC_SOURCE_HPD_PIN

PB.10

PF.6

PF.7

PA11

PB.6

PB.7

PA.8

Output open drain

Output open drain

Output open drain

Output push pull

Output open drain

Output open drain

Output push pull

Remap

PA.5 and PB.8

18/32 Doc ID 022911 Rev 1