Hytera PT580 - Uart; Diagram of UART Connection

Service Manual
2.2.6 UART
The MCU has 3 UART interfaces: UART1, UART2 and UART 3. The communication rate can be up to
1.5Mbps. The UART connection is shown in Figure 13. The UART2 interface is connected to the
accessory jack for upgrading and programming, while the UART1 and UART3 interfaces are reserved.
UART_RXD
UART_TXD
UART_RTS
UART_CTS
U2501
PC
Reserve
U2001
UART3.RX
UART3.TX
UART2.RX
UART2.TX
UART1.RX
UART1.TX
MCU
UART3.CTS
UART3.RTS
RXA
TXA
J2502
TXA
RXA
J2501
Reserve
Figure 13 Diagram of UART Connection
2.2.7 I
2
C
The MCU provides one I
2
C interface for the MCU to control the PMU and RTC.
I2C.SCL
SCL
SDA
PMU
SDA
SCL
RTC
SDA
SCL
Reserve
U2001
I2C.SDA
MCU
Figure 14 Diagram of I
2
C Connection
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