Table of Contents
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UART1_TXD
70
UART1_RXD
72
BT UART Interface
Pin Name
Pin No.
BT_UART_TXD
59
BT_UART_RXD
63
BT_UART_RTS
61
BT_UART_CTS
62
Debug UART Interface
Pin Name
Pin No.
DBG_RXD
110
DBG_TXD
107
I2C1 Interface (for Codec Configuration by Default)
Pin Name
Pin No.
I2C1_SCL
79
I2C1_SDA
80
AG521R-NA_QuecOpen_Hardware_Design
DO
UART1 transmit
DI
UART1 receive
I/O
Description
DO
BT UART transmit
DI
BT UART receive
BT UART request to
DI
send
BT UART clear to
DO
send
I/O
Description
DI
Debug UART receive
Debug UART
DO
transmit
I/O
Description
OD
I2C1 serial clock
OD
I2C1 serial data
Automotive Module Series
AG521R-NA QuecOpen Hardware Design
V
max = 0.45 V
OL
V
min = 1.35 V
OH
V
min = -0.3 V
IL
V
max = 0.63 V
IL
V
min = 1.17 V
IH
V
max = 2.1 V
IH
DC
Comment
Characteristics
V
max = 0.45 V
OL
V
min = 1.35 V
OH
V
min = -0.3 V
IL
V
max = 0.63 V
IL
1.8 V power domain.
V
min = 1.17 V
IH
Can be configured to
V
max = 2.1 V
IH
GPIO.
V
min = -0.3 V
IL
If unused, keep them
V
max = 0.63 V
IL
open.
V
min = 1.17 V
IH
V
max = 2.1 V
IH
V
max = 0.45 V
OL
V
min = 1.35 V
OH
DC
Comment
Characteristics
V
min = -0.3 V
IL
V
max = 0.63 V
IL
V
min = 1.17 V
IH
1.8 V power domain.
V
max = 2.1 V
IH
V
max = 0.45 V
OL
V
min = 1.35 V
OH
DC
Comment
Characteristics
External pull-up
resistor is required.
1.8 V only.
Can be configured to
GPIO.
If unused, keep them
open.
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