Neoway N720 OpenLinux - Bluetooth

N720 OpenLinux
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
51
(dhrd)
Data hold time
1.5
/
/
ns
t(dsurd)
Data set-up time
1.65
/
/
ns
t(pddwr)
Delay time from data write to
transmit
2.5
/
6.15
ns
t(pdcwr)
Delay time from command write to
transmit
-7.85
/
2.65
ns
3.4.3 Bluetooth
Signal
Pin
I/O
Function
Remarks
BT_WAKEUP_HOST
51
DI
Bluetooth wakeup host
Multiplex CTS and
RTS of UART5
BT_WAKEUP_SLAVE
52
DO
Bluetooth wakeup slave
BT_UART_TXD
69
DO
Data TX of Bluetooth UART
Used for Bluetooth
data transmission.
Leave them floating if
they are not used.
BT_UART_RXD
70
DI
Data RX of Bluetooth UART
BT_UART_CTS
71
DI
Clear to send
BT_UART_RTS
72
DO
Request to send
BT_EN
73
DO
Bluetooth enable
Leave this pin floating
if it is not used.
BT_PWR_EN
78
DO
Control of Bluetooth external
power
Leave this pin floating
if it is not used.
N720 OpenLinux communicates with Bluetooth chipset through UART for data transmission. To use
Bluetooth audio, connect one set of PCM signals (pins 65 to 68). See section 3.7 MUX Interfaces.
Figure 3-45 shows the Bluetooth connection.