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Signal Descriptions

BCM4354 Data Sheet

BROADCOM CONFIDENTIAL

Broadcom®

October 15, 2014 • 4354-DS109-R

Page 105

WLAN SDIO Bus Interface

These signals can support alternate functionality depending on package and host interface mode. See

Table 26: “GPIO Alternative Signal Functions,” on page 120

SDIO_CLK

SDIO clock input

SDIO_CMD

I/O

SDIO command line

SDIO_DATA_0

I/O

SDIO data line 0

SDIO_DATA_1

I/O

SDIO data line 1

SDIO_DATA_2

I/O

SDIO data line 2

SDIO_DATA_3

I/O

SDIO data line 3

WLAN HSIC Interface

100

HSIC_STROBE

I/O

HSIC Strobe

101

HSIC_DATA

I/O

HSIC Data

RREFHSIC

HSIC reference resistor input. If HSIC is used,

connect this pin to ground via a 51-ohm 5% resistor.

On SDIO designs this pin should not be connected.

WLAN GPIO Interface

The GPIO signals can be multiplexed via software and the JTAG_SEL pin to support other functions. See

Table 23: “WLAN GPIO Functions and Strapping Options,” on page 119 and Table 26: “GPIO Alternative Signal

Functions,” on page 120 for additional details.

218

GPIO_0

I/O

Programmable GPIO pins

219

GPIO_1

I/O

220

GPIO_2

I/O

221

GPIO_3

I/O

229

GPIO_4

I/O

237

GPIO_5

I/O

236

GPIO_6

I/O

189

GPIO_7

I/O

196

GPIO_8

I/O

205

GPIO_9

I/O

185

GPIO_10

I/O

192

GPIO_11

I/O

199

GPIO_12

I/O

182

GPIO_13

I/O

188

GPIO_14

I/O

195

GPIO_15

I/O

JTAG Interface

239

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.

Table 21: WLCSP Signal Descriptions (Cont.)

Bump#

Signal Name

Type

Description

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