RL78/F13, F14 CHAPTER 17 LIN/UART MODULE (RLIN3)
R01UH0368EJ0210 Rev.2.10 1193
Dec 10, 2015
(25) UART Reception Data Register (LURDRn)
Address: F06E7H, F06E6H
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
— — — — — — — [8:0]
Value after reset:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bit Function
Setting
Range
R/W
8 to 0 Allows the reception data to be read from the reception buffer. 000H to
1FFH
R
15 to 9 Reserved.
These bits are always read as 0. The write value should always be 0.
— R/W
The LURDRn register allows the reception data to be read from the reception data register.
When the UROE bit in the LUOERn register is 1, the reception data is stored in this register and can be read out.
This register is updated at the stop bit in the reception data.
This register is also updated when an error is caused by the parity or stop bit.
This register is not updated upon occurrence of an overrun error if the OERE bit in the LEDEn register is 1 (overrun error
detection is enabled). This register is updated upon occurrence of an overrun error if the OERE bit is 0 (overrun error
detection is disabled).
Read this register upon occurrence of a reception error (overrun error, framing error, or parity error) if the OERE bit in the
LEDEn register is 1 (overrun error detection is enabled). Reading the next data without reading this register causes an
overrun error.
This register can be accessed in 8 bits. However, do not access this register in 8-bit units when the expansion bits are used
(the UEBE bit in the LUORn1 register is 1 (expansion bit operation enabled)).
The table below shows the bit arrangement according to the set transfer format.
Item
LURDRn
8 7 6 5 4 3 2 1 0
7-bit; LSB first — — Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
7-bit; MSB first — — Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6
8-bit; LSB first — Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
8-bit; MSB first — Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7
9-bit; LSB first Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
9-bit; MSB first Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8
To Next Page
Loading...
Need help?
General
