BCM43907 Preliminary Data Sheet
Signal Descriptions
Table 10: Signal Descriptions (Cont.)
Signal Name Type Description
Bump Number
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
279
283
198
HIB_REG_ON_OUT
HIB_WAKE_B
O
I
REG_ON output signal generated by the hibernation block.
Wake up chip from hibernation mode.
HIB_LPO_SELMODE
SRSTN
I
Select precise or coarse 32 kHz clock.
I
System reset. This active-low signal resets the
backplanes.
I2S Interface
153
154
163
164
I2S_MCLK0
I2S_SCLK0
I2S_LRCLK0
I2S_SDATAI0
I/O
I/O
I/O
I
M clock
S clock
LR clock
2
I S data input
2
161
I2S_SDATAO0
O
I S data output
158
160
162
156
I2S_MCLK1
I2S_SCLK1
I2S_LRCLK1
I2S_SDATAI1
I/O
I/O
I/O
I
M clock
S clock
LR clock
2
I S data input
2
155
I2S_SDATAO1
O
I 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
–
No connect
16–20, 23, 24,
26–34, 36–38,
41, 43–49, 51,
54, 55, 61–70, 179–
181
Broadcom®
March 12, 2016 • 43907-DS104-R
Page 61
BROADCOM CONFIDENTIAL
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