Rockchip RK3566 EVB2 - Audio Input and Output Interface

Copyright 2021 @ Rockchip Electronics Co., Ltd. 26
4
GND
5
eDP_TX_D1N_CON
6
eDP_TX_D1P_CON
7
GND
8
eDP_TX_AUXN_CON
9
eDP_TX_AUXP_CON
10
GND
11
eDP_TX_D2N_CON
12
eDP_TX_D2P_CON
13
GND
14
eDP_TX_D3N_CON
15
eDP_TX_D3P_CON
16
GND
17
LCD0_BL
18
NC
19
VCC3V3_LCD0
20
LCD0_RST
21
SARADC_VIN2_LCD_ID
22
LCD0_PWREN_H
23
I2C1_SCL_TP_CON
24
I2C1_SDA_TP_CON
25
TP_INT_L_GPIO0_B5_CON
26
TP_RST_L_GPIO0_B6_CON
27
GND
28
VCC5V0_LCDeDP
29
VCC5V0_LCDeDP
30
VCC5V0_LCDeDP
3.16 Audio Input and Output Interface
The development board supports Headphone, SPK (8ohm/1.3W) and MIC functions; the digital MIC array interface
is reserved to debug external MIC devices, and supports up to 8 channels.
The MIC output of RK809 is connected to MIC device by default. DIP switch S7000: 1-8, 2-7 are set to ON, 3-6, 4-5,
are set to OFF; if RK809's SPK is needed for output recovery function, the MIC signal has to be connected to the
SPK output signal, the DIP switch S7000: 1-8, 2-7 are set to OFF, 3-6, 4-5 are switch to ON
Figure 3-17 MIC and Loopback DIP Switch Selection Circuit