12
14 SDIO_DATA_2 I/O SDIO data line 2
15 SDIO_DATA_3 I/O SDIO data line 3
16 SDIO_DATA_CMD I/O SDIO command line
17 SDIO_DATA_CLK I/O SDIO clock line
18 SDIO_DATA_0 I/O SDIO data line 0
19 SDIO_DATA_1 I/O SDIO data line 1
20 GND － Groundconnections
21 VIN_LDO_OUT
P
Internal Buck voltage generationpin
22 VDDIO
P
I/O Voltage supply input
23 VIN_LDO
P
Internal Buck voltage generationpin
24 LPO
I
External Low Power Clock input(32.768KHz)
25 PCM_OUT I/O PCM Data output
26 PCM_CLK I/O PCM clock
27 PCM_IN I/O PCM data input
28 PCM_SYNC I/O PCM sync signal
29 NC － Floating (Don’t connected toground)
30 NC － Floating (Don’t connected toground)
31 GND － Groundconnections
32 NC － Floating (Don’t connected toground)
33 GND － Groundconnections
34 RST_N
I
Low asserting reset for Bluetoothcore
35 NC － Floating (Don’t connected toground)
36 GND － Groundconnections
37 NC － Floating (Don’t connected toground)
38 NC － Floating (Don’t connected toground)
39 NC － Floating (Don’t connected toground)
40 NC － Floating (Don’t connected toground)
41 UART_RTS_N
O
FM UART interface
42 UART_TXD
O
FM UARTinterface
43 UART_RXD
I
FM UARTinterface
44 UART_CTS_N
I
FM UART interface
45 TP1
O
FMAnalog AUDIO left output
46 TP2
O
FM Analog AUDIO rightoutput
47 TP3 (NC) － Floating (Don’t connected toground)
