8 Universal Asynchronous Receiver/Transmitter (UART)
75
CW6632B Bluetooth 3.0 Audio Player SOC
Version 1.0.0
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In normal mode , ,it become “1” every byte, but in DMA mode ,it become “1” every word.
TXIF
: UART TX Interrupt Flag
0 = UART transmit not done
1 = UART transmit done
Writing data to UTBUF or Writing UARTDMATXCNT will clear this flag.
OVERFLOWIF
: UART overflow Interrupt Flag
0 = UART overflow not done
1 = UART overflow done
RXKICK
: UART DMA receive KICK start
0 = not KICK start
1 = KICK start
Register 8-9 UART1DIV
– UART1 divide register
Position
7
6
5
4
3
2
1
0
Name
UART1DIV
Default
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Register 8-10 UART1BAUD
– UART1 Baud Rate register
Position
7
6
5
4
3
2
1
0
Name
UART1BAUD
Default
x
x
x
x
x
x
x
x
Access
WO
WO
WO
WO
WO
WO
WO
WO
Baud Rate =Fsys clock / [(1) ( UAR 1)]
Register 8-11 UART1DATA
– UART1 Data
Position
7
6
5
4
3
2
1
0
Name
UART1DATA
Default
x
x
x
x
x
x
x
x
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Write this location will load the data to transmitter buffer. And read this location will read the data from the receiver
buffer.
Register 8-12 UARTDMATXCNT
–UART1 DMA Transmit counter
Portion
7
6
5
4
3
2
1
0
Name
UARTDMATXCNT
Default
x
x
x
x
x
x
X
x
Access
WO
WO
WO
WO
WO
WO
WO
WO
Nbyte = UARTDM 1
