SN32F280 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 181
Version 1.1
2
PE
Parity Error flag.
When the parity bit of a received character is in the wrong state, a parity
error occurs. A UARTn_LS register read clears PE bit. Time of parity error
detection is dependent on FIFOEN bit in UARTn_FIFOCTRL register.
0: Parity error status is inactive.
1: Parity error status is active.
R
0
1
OE
Overrun Error flag.
The overrun error condition is set as soon as it occurs. A UARTn_LS
register read clears OE bit. OE=1 when UART RSR has a new character
assembled and the UARTn_RB FIFO is full. In this case, the USARTn_RB
FIFO will not be overwritten and the character in the USARTn_RS register
will be lost.
0: Overrun error status is inactive.
1: Overrun error status is active.
R
0
0
RDR
Receiver Data Ready flag
RDR=1 when the UARTn_RB FIFO holds an unread character and is
cleared when the UARTn_RB FIFO is empty.
0: UARTn_RB FIFO is empty.
1: UARTn_RB FIFO contains valid data.
R
0
15.7.9 UART n Scratch Pad register (UARTn_SP) (n=0,1,2,3)
Address Offset: 0x1C
This register has no effect on the UART
operation. This register can be written and/or read at user’s discretion. There is
no provision in the interrupt interface that would indicate to the host that a read or write of this register has occurred.
Bit
Name
Description
Attribute
Reset
31:8
Reserved
R
0
7:0
PAD[7:0]
A readable, writable byte.
R/W
0
15.7.10 UART n Auto-baud Control register (UARTn_ABCTRL) (n=0,1,2,3)
Address Offset: 0x20
This register controls the process of measuring the incoming clock/data rate for the baud rate generation and can be
read and written at user’s discretion. Besides, it also controls the clock pre-scaler for the baud rate generation. The reset
value of the register keeps the fractional capabilities of UART disabled making sure that UART is fully SW and HW
compatible with UARTs not equipped with this feature.
Bit
Name
Description
Attribute
Reset
31:10
Reserved
R
0
9
ABTOIFC
Auto-baud time-out interrupt flag clear bit
0: No effect.
1: Clear ABTOIF bit. This bit is automatically cleared by HW.
W
0
8
ABEOIFC
End of auto-baud interrupt flag clear bit
0: No effect.
1: Clear ABEOIF bit. This bit is automatically cleared by HW.
W
0
7:3
Reserved
R
0
2
AUTORESTART
Restart mode
0: No restart
1: Restart in case of timeout (counter restarts at next UART RX falling
edge)
R/W
0
1
MODE
Auto-baud mode select bit.
0: Mode 0.
1: Mode 1.
R/W
0
0
START
This bit is automatically cleared after auto-baud completion.
0: Auto-baud stop (auto-baud is not running).
1: Auto-baud start (auto-baud is running). Auto-baud run bit. This bit is
automatically cleared by HW after auto-baud completion.
R/W
0
Содержание SN32F280 Series
Страница 222: ...SN32F280 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 222 Version 1 1 A1D16...
Страница 263: ...SN32F280 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 263 Version 1 1 26 2 LQFP 64 PIN...
Страница 264: ...SN32F280 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 264 Version 1 1 26 3 LQFP 48 PIN...