Quectel AF20, Проектирование аппаратного обеспечения

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Wi-Fi&Bluetooth Module Series
AF20_Hardware_Design 18 / 49
V
IH
min = 1.26 V
V
IH
max = 2.0 V
PCM_IN 13 DI PCM data input
V
IL
min = -0.3 V
V
IL
max = 0.54 V
V
IH
min = 1.26 V
V
IH
max = 2.0 V
1.8 V power domain.
If unused, keep these
pins open.
PCM_SYNC 14 DI
PCM data frame
synchronization
signal
V
IL
min = -0.3 V
V
IL
max = 0.54 V
V
IH
min = 1.26 V
V
IH
max = 2.0 V
PCM_CLK 15 DI PCM clock signal
V
IL
min = -0.3 V
V
IL
max = 0.54 V
V
IH
min = 1.26 V
V
IH
max = 2.0 V
PCM_OUT 16 DO PCM data output
V
OL
max = 0.18 V
V
OH
min = 1.62 V
BT_UART_
RTS
7 DO
Bluetooth UART
request to send V
OL
max = 0.18 V
V
OH
min = 1.62 V
BT_UART_
CTS
8 DI
Bluetooth UART
clear to send
V
IL
min = -0.3 V
V
IL
max = 0.54 V
V
IH
min = 1.26 V
V
IH
max = 2.0 V
BT_UART_
TXD
17 DO
Bluetooth UART
transmit V
OL
max = 0.18 V
V
OH
min = 1.62 V
BT_UART_
RXD
18 DI
Bluetooth UART
receive
V
IL
min = -0.3 V
V
IL
max = 0.54 V
V
IH
min = 1.26 V
V
IH
max = 2.0 V
HOST_WAK
E_BT
42 DI
Host wake up
Bluetooth
V
IL
min = -0.3 V
V
IL
max = 0.54 V
V
IH
min = 1.26 V
V
IH
max = 2.0 V
1.8 V power domain.
Pull-up at bootup is
prohibited.
Pull down to the
ground if unused.
BT_WAKE_H
OST
46 DO
Bluetooth wake up
host V
OL
max = 0.18 V
V
OH
min = 1.62 V
Coexistence UART
Pin Name Pin No. I/O Description DC Characteristics Comment
LTE_UART_
TXD
5 DO
LTE/Wi-Fi &
Bluetooth
coexistence signal -
transmit data
V
OL
max = 0.18 V
V
OH
min = 1.62 V
1.8 V power domain.
If unused, keep these
pins open.
QCOM private
protocol, and these
pins cannot be used
LTE_UART_ 6 DI LTE/Wi-Fi & V
IL
min = -0.3 V