Neoway N720 - Page 18

N720 Hardware User Guide
Copyright © Neoway Technology Co., Ltd 10
V
IH
max=2.1V
PCM_SYNC
12
IO
PCM sync signal
V
OL
max=0.45V;
V
OH
min=1.35V;
V
IL
min=-0.3V;
V
IL
max=0.45V;
V
IH
min=1.6V;
V
IH
max=2.1V
1.8V
I2S_MCLK
64
DO
I2S main clock output
signal
1.8V
Leave this pin unconnected if it is not used.
I2C_SDA
81
IO
I2C data
V
OL
max=0.45V;
V
OH
min=1.35V;
V
IL
min=-0.3V;
V
IL
max=0.45V;
V
IH
min=1.6V;
V
IH
max=2.1V
1.8V
Connected to a 2.2K pull-up resistor internally.
Leave them pin unconnected if they are not
used.
I2C_SCL
82
DO
I2C clock
V
OL
max=0.45V;
V
OH
min=1.35V
1.8V
WLAN (Optional)
LTE_COEX_RX_UART
48
DI
WLAN/LTE co-exist
control receive
V
IL
min=-0.3V
V
IL
max=0.45V
V
IH
min=1.35V
V
IH
max=2.1V
1.8V
Multiplexing function of
FORCE_USB_BOOT
Leave this pin unconnected if it is not used.
LTE_COEX_TX_UART
50
DO
WLAN/LTE co-exist
control transmit
V
OL
max=0.45V;
V
OH
min=1.35V
1.8V
Leave this pin unconnected if it is not used.
VDDXO_1P8
53
PO
1.8V power supply
output
Vnorm=1.8V
1.8V
Used to connect to the crystalloid of the
external WLAN chipset via a pull-up resistor.