Drawing No.：JW204430XX
Date：July 13, 2017
(19/27)
CONFIDENTIAL
© silex technology, Inc.
Num
Signal name
Type
I/O Domain
Descriptions
26
BT_UART_TXD
DO
VDD_GPIO_1
UART TXD for BT. Since this pin is used for Bootstrap option, you must not drive this pin
until releasing the reset signal. Keep Open if BT is not used. Interal Pull-up.
27
BT_UART_RTS
DO
VDD_GPIO_1
UART RTS for BT. Keep Open if BT is not used.
28
NC
NC
NC
NC pin
29
RESERVED
DI
VDD
Un-used signal. Keep Open.
30
RESERVED
OD
Open drain
Un-used signal (Debug port).. Open drain output. Recommended to connect to a test pad
and need external pull-up to IO power rail of the connected external system if the debug
function is used. Keep Open if the debug function is not used.
31
GND
GND
GND
Ground
32
VDD
P
P
+3.135～+3.465V
33
GND
GND
GND
Ground
34
GND
GND
GND
Ground
35
BT_WKUP_HOST
OD
Open drain
BT wake-up HOST. Active High. Keep Open if BT is not used. Need external pull-up to IO
power rail of the host system. *No testing function. Need to verify with your host board. If
you need this function please contact silex support.
36
WOW
OD
Open drain
Wake on wireless signal. Active High. Open drain output. Need external pull-up to IO power
rail of the host system.
37
RESERVED
PD
VDD
Un-used signal. Keep Open. Internal Pull-down
38
BT_I2S_SCK
PD
VDD_GPIO_1
BT PCM BCK. Bootstrap option, you must not drive this pin until releasing the reset signal.
Keep Open if Bluetooth Audio is not used. Internal Pull-down.
*No testing function. Need to verify with your I2S device or CODEC. If you need this function
please contact silex support.
39
BT_I2S_WS
B
VDD_GPIO_1
BT PCM SYNC. Keep Open if Bluetooth Audio is not used. Internal pull-down.
*No testing function. Need to verify with your I2S device or CODEC. If you need this function
please contact silex support.
40
BT_I2S_SDI
DI
VDD_GPIO_1
BT PCM IN. Keep Open if Bluetooth Audio is not used.
*No testing function. Need to verify with your I2S device or CODEC. If you need this function
please contact silex support.
41
BT_I2S_SDO
DO
VDD_GPIO_1
BT PCM OUT. Keep Open if Bluetooth Audio is not used.
*No testing function. Need to verify with your I2S device or CODEC. If you need this function
please contact silex support.
42
GND
GND
GND
Ground
43
BT_PWD_L
PD
VDD_GPIO_1
BT HW reset. (0=Disable, 1=Enable) Internal Pull-down.
44
GND
GND
GND
Ground
Num
Signal name
Type
I/O
Domain
Descriptions
EXPGND Exposed Ground
GND
GND
Exposed Ground 72 pads
