BCM4354 Data Sheet
Signal Descriptions
Table 22: WLBGA Signal Descriptions
Type Description
Ball#
Signal Name
JTAG Interface
D9
JTAG_SEL
I/O JTAG select: pull high to select the JTAG interface. If
the JTAG interface is not used this pin may be left
floating or connected to ground.
Note: See Table 26: “GPIO Alternative Signal
Functions,” on page 120 for the JTAG signal pins.
Clocks
P12
N12
F6
WRF_XTAL_IN
WRF_XTAL_OUT
LPO_IN
I
XTAL oscillator input
O
I
XTAL oscillator output
External sleep clock input (32.768 kHz)
F4
CLK_REQ
O
Reference clock request (shared by BT and WLAN).
If not used, this can be no-connect.
Bluetooth/FM Transceiver
L1
–
BT_RF
O
I
Bluetooth PA output
SFLASH_CLK
BT_SF_CLK
BT_SF_CS_L
BT_SF_MISO
BT_SF_MOSI
FM_RFIN
–
I/O SFLASH_CSN
–
I/O SFLASH master input, slave output
I/O SFLASH master output, slave input
–
H1
–
I
FM radio antenna port
FM radio auxiliary antenna port
FM DAC output 1
FM_RFAUX
FM_AOUT1
FM_AOUT2
I
E1
F1
O
O
FM DAC output 2
Bluetooth PCM
M6
J4
BT_PCM_CLK
I/O PCM clock; can be master (output) or slave (input)
BT_PCM_IN
I
PCM data input
PCM data output
H4
K6
BT_PCM_OUT
BT_PCM_SYNC
O
I/O PCM sync; can be master (output) or slave (input).
Bluetooth USB Interface
E5
BT_USB_DN
I/O USB (Host) data negative. Negative terminal of the
USB transceiver.
F5
BT_USB_DP
I/O USB (Host) data positive. Positive terminal of the USB
transceiver.
Bluetooth UART
L5
K5
H5
BT_UART_CTS_L
I
O
I
UART clear-to-send. Active-low clear-to-send signal
for the HCI UART interface.
BT_UART_RTS_L
BT_UART_RXD
UART request-to-send. Active-low request-to-send
signal for the HCI UART interface. BT LED control pin.
UART serial input. Serial data input for the HCI UART
interface.
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 114
BROADCOM CONFIDENTIAL
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