SN8F2280 Series
USB 2.0 Full-Speed 8-Bit Micro-Controller
10.3 UART TRANSMITTER CONTROL REGISTER
URTX initial value = 0xx0000x
0A9H
URTX
Read/Write
After Reset
Bit 7
UCLKS
R/W
0
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
UTXM
R/W
0
Bit 0
UTXEN UTXPEN UTXPS
R/W
0
R/W
0
R/W
0
Bit 7
Bit 4
Bit 3
Bit 2
Bit 1
UCLKS: UART clock source select bit.
0 = UART clock source is 16MHz.
1 = UART clock source is 24MH.
UTXEN: UART TX control bit.
0 = Disable UART TX. UTX pin keeps and returns to GPIO function.
1 = Enable UART TX. UTX pin transmits UART data.
UTXPEN: UART TX parity bit check function control bit.
0 = Disable UART TX parity bit check function. The data stream doesn’t include parity bit.
1 = Enable UART TX parity bit check function. The data stream includes parity bit.
UTXPS: UART TX parity bit format control bit.
0 = UART TX parity bit format is even parity.
1= UART TX parity bit format is odd parity.
UTXM: UART TX data buffer length control bit.
0 = 1-byte.
1 = 2-byte.
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