W7500x Reference Manual Version1.1.0
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26.4
UART2 Registers(Base address: 0x4000_6000)
UART2DR (UART2 Data Register)
Address offset: 0x000
Reset value: 0x0000_0000
The UART2DR is the data register.
The write operation initiates transmission from the UART2. The received data byte is read by
performing reads from the UART2DR register along with the corresponding status information.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
res
res
res
res
res
res
res
res
res
res
res
res
res
res
res
res
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
res
res
res
res
res
res
res
res
DATA
R/W
[7:0] DATA – Receive (READ)/Transmit (WRITE) data
UART2SR (UART2 Status Register)
Address offset: 0x004
Reset value: 0x0000_0000
The UART2SR is the status register. RXBF and TXBF is read only.
A write to the UART2SR register clears the TX/RX overrun errors.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
res
res
res
res
res
res
res
res
res
res
res
res
res
res
res
res
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
res
res
res
res
res
res
res
res
res
res
res
res
RXO
TXO
RXBF TXBF
R/W R/W
R
R
[3] RXO –Receive Overrun
[2] TXO – Transmit Overrun
[1] RXBF – Receive buffer full
Read Only
0: The bit is set when the receive holding register is full
1: The bit is set when the receive buffer is full
[0] TXBF – Transmit buffer full