BCM4354 datasheet(115/192 Pages) CYPRESS

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Signal Descriptions

BCM4354 Data Sheet

BROADCOM CONFIDENTIAL

Broadcom®

October 15, 2014 • 4354-DS109-R

Page 114

JTAG Interface

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

WRF_XTAL_IN

XTAL oscillator input

N12

WRF_XTAL_OUT

XTAL oscillator output

LPO_IN

External sleep clock input (32.768 kHz)

CLK_REQ

Reference clock request (shared by BT and WLAN).

If not used, this can be no-connect.

Bluetooth/FM Transceiver

BT_RF

Bluetooth PA output

–

BT_SF_CLK

SFLASH_CLK

–

BT_SF_CS_L

I/O

SFLASH_CSN

–

BT_SF_MISO

I/O

SFLASH master input, slave output

–

BT_SF_MOSI

I/O

SFLASH master output, slave input

FM_RFIN

FM radio antenna port

–

FM_RFAUX

FM radio auxiliary antenna port

FM_AOUT1

FM DAC output 1

FM_AOUT2

FM DAC output 2

Bluetooth PCM

BT_PCM_CLK

I/O

PCM clock; can be master (output) or slave (input)

BT_PCM_IN

PCM data input

BT_PCM_OUT

PCM data output

BT_PCM_SYNC

I/O

PCM sync; can be master (output) or slave (input).

Bluetooth USB Interface

BT_USB_DN

I/O

USB (Host) data negative. Negative terminal of the

USB transceiver.

BT_USB_DP

I/O

USB (Host) data positive. Positive terminal of the USB

transceiver.

Bluetooth UART

BT_UART_CTS_L

UART clear-to-send. Active-low clear-to-send signal

for the HCI UART interface.

BT_UART_RTS_L

UART request-to-send. Active-low request-to-send

signal for the HCI UART interface. BT LED control pin.

BT_UART_RXD

UART serial input. Serial data input for the HCI UART

interface.

Table 22: WLBGA Signal Descriptions

Ball#

Signal Name

Type Description

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