BCM43903 Datasheet, PDF (45/87 Pages) Cypress Semiconductor – WICED™ IEEE 802.11 b/g/n SoC with an Embedded Applications Processor

BCM43903 Preliminary Data Sheet
Signal Descriptions
Signal Descriptions
Table 7 provides the signal name, type, and description for each BCM43903 ball. The symbols shown under
Type indicate pin directions (I/O = bidirectional, I = input, and O = output) and the internal pull-up/pull-down
characteristics (PU = weak internal pull-up resistor and PD = weak internal pull-down resistor), if any.
Table 7: Signal Descriptions
Ball Number Signal Name
Type Description
Broadcom Serial Control (BSC) Interfaces
C8
I2C0_CLK
O BSC master clock.
B9
I2C0_SDATA
I/O BSC serial data
Clocks
P6
P7
M8
H2
J2
WRF_XTAL_XOP
WRF_XTAL_XON
LPO_XTAL_IN
HIB_XTALIN
HIB_XTALOUT
I
XTAL oscillator input.
O XTAL oscillator output.
I
External sleep clock input (32.768 kHz).
I
3.3V 32 kHz crystal input
O 3.3V 32 kHz crystal output
GPIO Interface (WLAN)
E1
GPIO_0
D1
GPIO_1
G10
GPIO_2
G12
GPIO_3
F10
GPIO_4
F11
GPIO_5
F12
GPIO_6
E5
GPIO_7
D9
GPIO_8
E2
GPIO_9
C1
GPIO_10
B1
GPIO_11
C6
GPIO_12
E8
GPIO_13
A3
GPIO_14
A2
GPIO_15
C2
GPIO_16
I/O Programmable GPIO pins.
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Broadcom^®
March 12, 2016 • 43903-DS102-R
BROADCOM CONFIDENTIAL
Page 44