BCM4354 datasheet(92/165 Pages) CYPRESS

92 / 165 page

Document Number: 002-14809 Rev. *J

Page 92 of 165

CYW4354

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 trans-

ceiver.

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).

Bluetooth GPIO

–

BT_GPIO_2

I/O

Bluetooth general-purpose I/O

–

BT_GPIO_3

I/O

Bluetooth general-purpose I/O

BT_GPIO_4

I/O

Bluetooth general-purpose I/O

–

BT_GPIO_5

I/O

Bluetooth general-purpose I/O

Miscellaneous

A10

WL_REG_ON

Used by PMU to power up or power down the internal CYW4354

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.

D10

BT_REG_ON

Used by PMU to power up or power down the internal CYW4354

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.

BT_DEV_WAKE

I/O

Bluetooth DEV_WAKE

BT_HOST_WAKE

I/O

Bluetooth HOST_WAKE

Table 23. WLBGA Signal Descriptions

Ball#

Signal Name

Type

Description

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