BCM43455 Preliminary Data Sheet
Pin Descriptions
Table 19: Signal Descriptions (Cont.)
Signal Name
WLBGA Ball
Type
Description
JTAG/SWD Interface
JTAG_SEL
E5
I/O
JTAG select. This pin must be
connected to ground if the
JTAG/SWD interface is not used. It must
be high to select
SWD OR JTAG. When JTAG_SEL = 1:
•
•
•
•
•
GPIO_2 is TCK/SWCLK
GPIO_3 is TMS/SWDIO
GPIO_4 is TDIO
GPIO_5 is TDO
GPIO_6 is TRST_L
Clocks
WRF_XTAL_XOP
WRF_XTAL_XON
LPO_IN
H11
G11
F1
I
XTAL oscillator input.
O
I
XTAL oscillator output.
External sleep clock input (32.768 kHz).
BT_CLK_REQ
L4
O
Reference clock request (shared by BT
and WLAN).
Bluetooth/FM Transceiver
BT_RF
N7
N4
N1
N2
O
I
Bluetooth PA output.
FM radio antenna port.
FM DAC output 1.
FM DAC output 2.
FM_RFIN
FM_AOUT1
O
O
FM_AOUT2
Bluetooth PCM
BT_PCM_CLK
H1
G1
I/O
I
PCM or SLIMbus clock; can be master
(output) or slave (input).
BT_PCM_IN
PCM data input or SLIMbus transport
sensing.
BT_PCM_OUT
BT_PCM_SYNC
H3
G3
O
PCM data output.
I/O
PCM sync; can be master (output) or
slave (input), or SLIMbus data.
Bluetooth UART
BT_UART_CTS_N
J6
I
UART clear-to-send. Active-low clear-to-
send signal for the HCI UART interface.
BT_UART_RTS_N
BT_UART_RXD
BT_UART_TXD
K3
O
UART request-to-send. Active-low
request-to-send signal for the HCI UART
interface. BT LED control pin.
K1
K2
I
UART serial input. Serial data input for
the HCI UART interface. BT RF disable
pin 2.
O
UART serial output. Serial data output
for the HCI UART interface.
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 87
BROADCOM CONFIDENTIAL
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