UM_INAP375R Revision 1.2_A1
Inova Semiconductors Confidential
Page 12 of 37
User Manual
SV4
APIX I2S audio interface
Pin
Signal
Description
2,4,6,8
GND
Signal ground
1
AX_I2S_FRCK
APIX2 digital audio interface. Monitor only! To asses APIX2 audio
interface through this port remove resistors R233 - R240.
3
AX_I2S_BCK
5
AX_I2S_DATA
7
AX_MCLK
Table 3-5: APIX I2S audio interface
SV5
POF interlace to
μ
C UART
Pin
Signal
Description
1
UC_UART_RX
UART interface
2
UC_UART_TX
3
GND
Signal ground
4
DIG_VCC33
3.3V Supply for POF module
Table 3-6: POF interlace to
μ
C UART
X1
Power supply input for board LDOs
Pin
Signal
Description
1
DCDC_2V1
2.1 V Supply input (optional, if 12V DC/DC is disabled)
2
DCDC_3V9
3.9 V Supply input (optional, if 12V DC/DC is disabled)
3
GND
Signal ground
4
GND
Signal ground
Table 3-7: Power supply input for board LDOs