Samsung S5PC110 Manual page 1611

S5PC110_UM 10 9BHIGH-DEFINITION MULTIMEDIA INTERFACE
10.1.2 BLOCK DIAGRAM OF HDMI
Figure 10-1 Block Diagram of HDMI
HDMI TX V1.3 consists of several blocks, each with a unique function. For instance, the Mixer specifies the
source image of HDMI. It transmits image data, which can be either RGB888 or YUV444. Before it works, you
must set the pixel clock properly. The ratio of pixel clock depends on the output resolution. You can configure both
CMU and HDMI_PHY.
SPDIF in peripheral bus and I2S 5.1 channel in Audio sub-system feed audio data in HDMI TX V1.3. For more
information, refer to SPDIF and I2S datasheets.
HDMI TX V1.3 in S5PC110 supports embedded HDCP key system. S5PC110 does not allow access to HDCP
key.
A dedicated I2C is used to configure HDMI PHY. In addition, the HDMI PHY generates pixel and TMDS clock
through I2C.
The CEC block is separate from HDMI TX, and is used by wake-up source in S5PC110. It belongs to the ALIVE
block and communicates with external CEC through bi-directional GPIO.
10-2