BCM4354 Data Sheet
Signal Descriptions
Table 21: WLCSP Signal Descriptions (Cont.)
Type Description
Bump# Signal Name
Bluetooth/FM I2S
I2S clock, can be master (output) or slave (input).
167
171
156
158
BT_I2S_CLK
BT_I2S_DO
BT_I2S_DI
I/O
I2S data output
I2S data input
I/O
I/O
I/O
I2S WS; can be master (output) or slave (input).
BT_I2S_WS
Bluetooth GPIOs
155
154
168
153
BT_GPIO_2
I/O Bluetooth general-purpose I/O
I/O Bluetooth general-purpose I/O
I/O Bluetooth general-purpose I/O
I/O Bluetooth general-purpose I/O
BT_GPIO_3
BT_GPIO_4
BT_GPIO_5
Miscellaneous
319
WL_REG_ON
I
Used by PMU to power up or power down the internal
BCM4354 regulators used by the WLAN section.
Also, when deasserted, this pin holds the WLAN
section in reset. This pin has an internal 200 kΩ pull-
down resistor that is enabled by default. It can be
disabled through programming.
320
BT_REG_ON
I
Used by PMU to power up or power down the internal
BCM4354 regulators used by the Bluetooth/FM
section. Also, when deasserted, this pin holds the
Bluetooth/FM section in reset. This pin has an internal
200 kΩ pull-down resistor that is enabled by default. It
can be disabled through programming.
176
170
BT_DEV_WAKE
BT_HOST_WAKE
I/O Bluetooth DEV_WAKE
I/O Bluetooth HOST_WAKE
Integrated Voltage Regulators
340
348
336
SR_VDDBATA5V
SR_VDDBATP5V
SR_VLX
I
I
Quiet VBAT
Power VBAT
O
CBuck switching regulator output. Refer to Table 43
on page 158 for details of the inductor and capacitor
required on this output.
342
327
249
254
351
341
362
346
324
LDO_VDD1P5
I
LNLDO input
LDO_VDDBAT5V
WRF_XTAL_VDD1P5
WRF_XTAL_VDD1P2
VOUT_LNLDO
I
LDO VBAT.
I
XTAL LDO input (1.35V)
XTAL LDO output (1.2V)
Output of LNLDO
Output of core LDO
Output of BT LDO
Output of 3.3V LDO
LDO 3.3V output
O
O
O
O
O
O
VOUT_CLDO
VOUT_BTLDO2P5
VOUT_LDO3P3_B
VOUT_3P3
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 107
BROADCOM CONFIDENTIAL
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