High-Definition Multimedia Interface-Consumer Electronics Control Controller (Hdmi™-Cec); Introduction - ST STM32F100 Series Reference Manual

RM0041 High-definition multimedia interface-consumer electronics control controller (HDMI™-
24 High-definition multimedia interface-consumer
electronics control controller (HDMI™-CEC)
Low-density value line devices are STM32F100xx microcontrollers where the flash
memory density ranges between 16 and 32 Kbytes.
Medium-density value line devices are STM32F100xx microcontrollers where the flash
memory density ranges between 64 and 128 Kbytes.
High-density value line devices are STM32F100xC, STM32F100xD and STM32F100xE
microcontrollers where the flash memory density ranges between 256 and 512 Kbytes.
This section applies to all STM32F100xx devices, unless otherwise specified.
24.1

Introduction

Consumer electronics control (CEC) is the appendix supplement 1 to the HDMI (high-
definition multimedia interface) standard.
It is a protocol that provides high-level control functions between all of the various
audiovisual products in an environment. It is specified to operate at low speeds with
minimum processing and memory overhead.
The HDMI-CEC controller provides a hardware support of this protocol.
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