Shenzhen Cloudecho Audio Co., Ltd.
9. Note on wiring extension
9.1 Power Input
The power input voltage cannot be lower than 4.8V, not higher than 5.5V
The input current cannot be lower than 1000mA
9.2 Audio output
AUX OUT is recommended to use shielded wire
I2S OUT is recommended to use a wire harness, do not use scattered
single wires, and the shorter the wiring, the better
SPDIF OUT can be connected to optical fiber or coaxial interface, but you
need to pay attention to the properties of the terminal
9.3 ADC button extension
ADC extension without external pull-up
ADC extension lead should not be too long, so as not to cause excessive
error of the ADC value
Extend the resistance value of ADC, please design strictly according to the
reference circuit diagram
9.4 LED extension
LED extension port can only drive LEDs within 5mA, please pay attention
when selecting LED
If you need to drive a larger current LED, please add an external MOS tube
to drive
9.5 HDMI Input
The HDMI CEC line is a high-frequency communication port, which will
frequently send and receive data, and is a source of radiated interference.
It is easy to cause radiated interference to the ARC signal channel and
analog audio channel. When connecting externally, please separate the
CEC line with a ground wire.