BCM4356 datasheet(86/155 Pages) CYPRESS

86 / 155 page

Document Number: 002-15053 Rev. *D

Page 86 of 155

ADVANCE

CYW4356

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.

See Table 27 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

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 trans-

ceiver.

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.

BT_UART_TXD

UART serial output. Serial data output for the HCI UART

interface.

Bluetooth/FM I2S

BT_I2S_CLK

I/O

I2S clock, can be master (output) or slave (input).

BT_I2S_DO

I/O

I2S data output

BT_I2S_DI

I/O

I2S data input

BT_I2S_WS

I/O

I2S WS; can be master (output) or slave (input).

Table 23. WLBGA Signal Descriptions (Cont.)

Ball#

Signal Name

Type

Description

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