PICO-IMX6 REV. A1. HARDWARE MANUAL
– VER 1.01 – JAN 28 2016
Page
26
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64
Table 5 - BCM4339 Bluetooth Signal Description
i.MX6
BALL
PAD NAME
Signal
I/O
Description
D19
SD4_DAT7
“UART2_TXD”
BT_UART_RXD
I
Bluetooth UART Serial Input. Serial data
input for the HCI UART Interface
E18
SD4_DAT4
“UART2_RXD”
BT_UART_TXD
O
Bluetooth UART Serial Output. Serial
data output for the HCI UART Interface.
B20
SD4_DAT6
“UART2_CTS”
BT_UART_CTS
I/O
Bluetooth UART Clear to Send. Active-
low clear-to-send signal for the HCI
UART interface.
C19
SD4_DAT5
“UART2_RTS”
BT_UART_RTS
I/O
Bluetooth UART Request to Send.
Active-low request-to-send signal for the
HCI UART interface.
V6
KEY_ROW0
“AUD5_TXD”
BT_PCM_IN
I
PCM data input
U6
KEY_ROW1
“AUD5_RXD”
BT_PCM_OUT
O
PCM data output
W5
KEY_COL0
“AUD5_TXC”
BT_PCM_CLK
I/O
PCM clock
U7
KEY_COL1
“AUD5_TXFS”
BT_PCB_SYNC
I/O
PCM sync signal
R6
GPIO_4
BT_WAKE
I
Bluetooth device wake-up: Signal from
the host to the module indicating that the
host requires attention.
• Asserted: Bluetooth device must wake-
up or remain awake.
• Deserted: Bluetooth device may sleep
when sleep criteria are met.
The polarity of this signal is software
configurable and can be asserted high or
low.
R1
GPIO_17
BT_RST_N
I
Low asserting reset for BT core
R4
GPIO_5
BT_HOST_WAKE
O
Host UART wake up. Signal from the
module to the host indicating that the
module requires Attention.
• Asserted: Host device must wake-up or
remain awake.
• Deserted: Host device may sleep when
sleep criteria are met.
The polarity of this signal is software
configurable and can be asserted high or
low.
