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Only for training and service purposes
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3. TECHNICAL BRIEF
G
SYMBOL HVQFN WLCSP DESCRIPTION
AGND 1 F1 Analog ground
RFI 2 E1 RF input
RFGND 3 D1 RF ground
NC 4 - not connected
BUSSEL2 5 A1 Bus Selection pin 2
BUSSEL1 6 C1 Bus Selection pin 1
RST 7 A2 Reset, used for operating mode change
SEN 8 B1 Chip Select for SPI bus
SCL 9 A3 Serial Bus Clock
SDA 10 A4 Serial Bus Data
FREF 11 A5 Reference frequency (32.768 kHz)
VREFDIG 12 A6 Reference voltage for digital I/Os
VDD 13 B6 Digital supply voltage
DGND 14 C6 Digital ground
AUDOR 15 D6 Audio output signal right
AUDOL 16 E6 Audio output signal left
NC 17 - Not connected
VCC 18 F6 Analog supply voltage
GPIO2 19 F5 General Purpose I/O 2; Dataout for 4-wire SPI-bus
[Table 3.7.2] pin description