BCM4330 Preliminary Data Sheet
Signal Assignments
The multiplexed GPIO signals are described in Table 22.
Table 22: Multiplexed GPIO Signals
Description
Pin Name
Type
UART_CTS_N
UART_RTS_N
UART_RXD
UART_TXD
PCM_IN
I
O
I
O
I
Host UART clear to send
Device UART request to send
Device UART receive data
Host UART transmit data
PCM data input
PCM_OUT
PCM_SYNC
PCM_CLK
GPIO[7:0]
A_GPIO[7:0]
I2S_MSDO
I2S_MWS
I2S_MSCK
I2S_SSCK
I2S_SSDO
I2S_SWS
I2S_SSDI/MSDI
STATUS
O
I/O
I/O
I/O
I/O
O
O
O
I
O
I
I
O
I
PCM data output
PCM sync signal, can be master (output) or slave (input)
PCM clock, can be master (output) or slave (input)
General purpose I/O
A group general purpose I/O
2
I S master data output
2
I S master word select
2
I S master clock
2
I S slave clock
2
I S slave data output
2
I S slave word select
2
I S slave/master data input
Signals Bluetooth priority status
WLAN-BT coexist. Transmission confirmation; permission for BT to
transmit
TX_CON_FX
RF_ACTIVE
LINK_IND
WL/BT_CLK_REQ
O
O
O
WLAN-BT coexist. Asserted (logic high) during local BT RX and TX slots
BT receiver/transmitter link indicator
WLAN clock request output
®
BROADCOM
BCM4330 Preliminary Data Sheet
April 28, 2011 • 4330-DS304-RI
Page 114
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