BCM4354 Data Sheet
Signal Descriptions
Table 21: WLCSP Signal Descriptions (Cont.)
Type Description
Bump# Signal Name
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
78
81
82
77
80
79
SDIO_CLK
I
SDIO clock input
SDIO_CMD
I/O SDIO command line
I/O SDIO data line 0
I/O SDIO data line 1
I/O SDIO data line 2
I/O SDIO data line 3
SDIO_DATA_0
SDIO_DATA_1
SDIO_DATA_2
SDIO_DATA_3
WLAN HSIC Interface
100
101
99
HSIC_STROBE
I/O HSIC Strobe
I/O HSIC Data
HSIC_DATA
RREFHSIC
I
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
219
220
221
229
237
236
189
196
205
185
192
199
182
188
195
GPIO_0
GPIO_1
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
GPIO_12
GPIO_13
GPIO_14
GPIO_15
I/O Programmable GPIO pins
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
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.
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 105
BROADCOM CONFIDENTIAL
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