Hdmi To Csi Audio Interface; Figure 22 - Io Card Hdmi To Csi Audio Connector (J23) - Arrow einfochips eragon 660 Hardware Referance Manual

Hardware Reference Manual
Figure 22 – IO Card HDMI to CSI Audio Connector (J23)
Pin specifications for J23 is mentioned below,
Pin Number
J23.1
J23.2
J23.3
J23.4
J23.5
J23.6
J23.7
J23.8
J23.9
J23.10
J23.11
J23.12
J23.13
J23.14
J23.M1
J23.M2
Table 22: IO Card

6.3.12 HDMI to CSI Audio interface

The Qualcomm SDA660 Processor does not include a built-in HDMI interface. The ERAGON660 has the
built-in MIPI-CSI 4 lanes interface, which is used, as HDMI input. A HDMI to CSI bridge chip TC358840
converts HDMI signals to MIPI CSI Signals. These CSI signals interfaced with SNAPDRAGON 660 through
MIPI CSI connectors mentioned in CSI section.
This Bridge Board supports audio as well. The ERAGON660 uses a MI2S_1 interface from the
SNAPDRAGON 660 chip which is mentioned in the below block. The ERAGON660 contains the 16 pin
HDMI Audio Connector (J13) on the board. A 6-wire (audio input) I2S channel is routed directly from
the SNAPDRAGON 660 SoC I2S interface pins to the HDMI to CSI Bridge Board through HDMI Audio
connector.
Version 1.0
Net Name
VCC_3V3_C_HDMI
NC
VCC_5V_C_HDMI
NC
HDMI_1.8V_DSI
NC
GND
GND
LNBBCLK3_HDMI
HDMI_MI2S_3_SCK
HDMI_HPD_N
HDMI_MI2S_3_WS
GPIO_110_HDMI_INT_GPIO
HDMI_MI2S_3_D0
GND
GND
HDMI Audio Connector (J23) Pinout
3.3V Supply
Not Connected
5V Supply
Not Connected
1.8V Supply
Not Connected
Ground
Ground
CLK-3
HDMI I2S 3 I2S Clock
HDMI Hot plug detection
HDMI I2S 3 Word Sync Clock
HDMI Interrupt
HDMI I2S 3 Data 0 Signal
Ground
Ground
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