BCM43907 Datasheet, PDF (62/128 Pages) Cypress Semiconductor – WICED™ IEEE 802.11 a/b/g/n SoC with an Embedded Applications Processor

BCM43907 Preliminary Data Sheet
Signal Descriptions
Table 10: Signal Descriptions (Cont.)
Bump Number Signal Name
Type Description
Hibernation Block, Power-Down/Power-Up, and Reset
100
REG_ON
I
Used by PMU to power up or power down the internal
BCM43907 regulators used by the WLAN and APP
sections. Also, when deasserted, this pin holds the WLAN
and APP sections in reset. This pin has an internal 200 kΩ
pull-down resistor that is enabled by default. It can be
disabled through programming.
282
HIB_REG_ON_IN
I
Used by the hibernation block to power up or power down
the internal BCM43907 regulators. For applications that
use the hibernation block, HIB_REG_ON_OUT must
connect to REG_ON. Also, when deasserted, this pin
holds the WLAN and APP sections in reset.
278
HIB_REG_ON_OUT O REG_ON output signal generated by the hibernation block.
279
HIB_WAKE_B
I
Wake up chip from hibernation mode.
283
HIB_LPO_SELMODE I
Select precise or coarse 32 kHz clock.
198
SRSTN
I
System reset. This active-low signal resets the
backplanes.
I²S Interface
153
I2S_MCLK0
I/O M clock
154
I2S_SCLK0
I/O S clock
163
I2S_LRCLK0
I/O LR clock
164
I2S_SDATAI0
I
I²S data input
161
I2S_SDATAO0
O _I²_{S data output}
158
I2S_MCLK1
I/O M clock
160
I2S_SCLK1
I/O S clock
162
I2S_LRCLK1
I/O LR clock
156
I2S_SDATAI1
I
I²S data input
155
I2S_SDATAO1
O _I²_{S data output}
JTAG Interface
193
JTAG_SEL
I
JTAG select. This pin must be connected to ground if the
JTAG interface is not used.
No Connects
1–5, 7–13,
NO_CONNECT
16–20, 23, 24,
26–34, 36–38,
41, 43–49, 51,
54, 55, 61–70, 179–
181
– No connect
Broadcom^®
March 12, 2016 • 43907-DS104-R
BROADCOM CONFIDENTIAL
Page 61