Table 16-8. Uartrsr/Uartecr Register (Read Operations); Table 16-9. Uartrsr/Uartecr Fields (Read Operations) - Sharp LH79524 User Manual

UARTs
Table 16-8 and Table 16-9 describe the UARTRSR/UARTECR Register for Read operations.
BIT
FIELD
RESET
RW
BIT
FIELD
RESET
RW
ADDR
BITS NAME
31:4
3
2
1
0
16-10

Table 16-8. UARTRSR/UARTECR Register (Read Operations)

31 30 29 28 27
0 0 0 0 0
RO RO RO RO RO
15 14 13 12 11
0 0 0 0 0
RO RO RO RO RO

Table 16-9. UARTRSR/UARTECR Fields (Read Operations)

/// Reserved Reading returns 0. Write the reset value.
Data Overrun Error This bit signifies when a data overrun has occurred.
1 = Data is received and the FIFO is already full
0 = Cleared to 0 by a write to the UARTECR Register. The FIFO contents remain
OE
valid since no further data is written when the FIFO is full, only the contents
of the shift register are overwritten. The CPU must now read the data in order
to empty the FIFO.
Break Error In FIFO Mode, this error is associated with the character at the top
of the FIFO. When a break occurs, only one 0 character is loaded into the FIFO.
The next character is only enabled after the receive data input goes to a 1 (Idle
state) and the next valid Start bit is received.
BE
1 = A break condition was detected, indicating that the received data input was
held LOW for longer than a full-word transmission time (defined as Start,
data, parity, and Stop bits)
0 = This bit is cleared to 0 after a write to the UARTECR Register
Parity Error/Address Received See Table 16-5. This bit is cleared to 0 by a
PEAR
write to UARTECR.
Framing Error This bit indicates a Framing Error has occurred.
FE
1 = The received character did not have a valid Stop bit (valid Stop bit is 1)
0 = This bit is cleared to 0 by a write to the UARTECR Register
26 25 24 23
///
0 0 0 0
RO RO RO RO
10 9 8 7
///
0 0 0 0
RO RO RO RO
UART 0: 0xFFFC0000 + 0x004
UART 1: 0xFFFC1000 + 0x004
UART 2: 0xFFFC2000 + 0x004
DESCRIPTION
Version 1.0
LH79524/LH79525 User's Guide
22 21 20 19 18
0 0 0 0 0
RO RO RO RO RO
6 5 4 3 2
OE BE
0 0 0 0 0
RO RO RO RO RO
17 16
0 0
RO RO
1 0
PEAR FE
0 0
RO RO