BCM20737S Data Sheet
Pin Map and Signal Descriptions
Table 2: Pin Descriptions
Description
Pin
Name
I/O Type
1
GPIO: P27
PWM1
I
Default direction: Input.
After POR state: Input floating.
Drain current: 16 mA
Alternate function: MOSI (master and slave) for SPI_2
GND
2
GND
GND
I
3
VBAT
GND
Battery supply input.
4
GND
GND
GND
GND
GND
GND
–
GND
5
GND
GND
6
GND
GND
7
GND
GND
8
GND
GND
9
GND
GND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Reserved
GND
Leave floating
GND
GND
GND
GND
GND
GND
GND
I
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
UART_RX
UART_RX. This pin is pulled low through an internal 10 kΩ resistor.
UART_TX O, PU
UART_TX
GND
GND
GND
I/O, PU
I/O, PU
GND
GND
I
SCL I/O, PU clock signal for an external I2C device
SCL
SDA I/O, PU data signal for an external I2C device
GND
SDA
GND
GND
GND
GPIO: P1
Default direction: Input.
After POR state: Input floating.
This pin is tied to the WP pin of the embedded EEPROM.
Requires an external 10K pull-up
26
27
TMC
I
Test mode control. Pull this pin high to invoke test mode; leave it floating
if not used. This pin is connected to GND through an internal 10 kΩ
resistor.
RESET_N I/O PU
Active-low system reset with open-drain output
Broadcom®
BLE SiP Module
April 10, 2016 • 20737S-DS101-R
Page 10
BROADCOM CONFIDENTIAL
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