Maps and Registers
ATCA-7360 Installation and Use (6806800J07S
)
166
6.3.4.2
UART Registers DLAB=0
6.3.4.2.1 Receiver Buffer Register (RBR)
In non-FIFO mode, this register holds the character received by the UART's Receive Shift
Register. If fewer than eight bits are received, the bits are right-justified and the leading bits are
zeroed. Reading the register, empties the register and resets the Data Ready (DR) bit in the Line
Status Register to zero. Other (error) bits in the Line Status Register are not cleared. In FIFO
mode, this register latches the value of the data byte at the top of the FIFO.
6.3.4.2.2 Transmitter Holding Register (THR)
This register holds the next data byte to be transmitted. When the Transmit Shift Register
becomes empty, the contents of the Transmit Holding Register are loaded into the shift
register and the transmit data request (TDRQ) bit in the Line Status Register is set to one.
In FIFO mode, writing to THR puts data to the top of the FIFO. The data at the bottom of the
FIFO is loaded to the shift register when it is empty.
Table 6-27 Receiver Buffer Register (RBR) if DLAB=0
LPC IO Address: Base
Bit
Description
Default
Access
7:0
Receiver Buffer Register (RBR)
Undefined
LPC: r
Table 6-28 Transmitter Holding Register (THR) if DLAB=0
LPC IO Address: Base
Bit
Description
Default
Access
7:0
Transmitter Holding Register (THR)
Undefined
LPC: w
Summary of Contents for ATCA-7360
Page 1: ...ATCA 7360 Installation and Use P N 6806800J07S May 2016...
Page 26: ...ATCA 7360 Installation and Use 6806800J07S About this Manual 26 About this Manual...
Page 36: ...ATCA 7360 Installation and Use 6806800J07S Sicherheitshinweise 36...
Page 43: ...Introduction ATCA 7360 Installation and Use 6806800J07S 43...
Page 44: ...Introduction ATCA 7360 Installation and Use 6806800J07S 44...
Page 66: ...Installation ATCA 7360 Installation and Use 6806800J07S 66...
Page 258: ...Supported IPMI Commands ATCA 7360 Installation and Use 6806800J07S 258...
Page 284: ...Replacing the Battery ATCA 7360 Installation and Use 6806800J07S 284...
Page 287: ......
