CPLD and FPGA
ATCA-8310 Installation and Use (6806800M72D)
277
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.
- 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.
- Interrupt Enable Register (IER)
Table 8-50 Receiver Buffer Register (RBR) if DLAB=0
IO Address: Base
Bit
Description
Default
Access
7.0
Receiver Buffer register(RBR)
Undef.
GPP: r
Table 8-51 Transmitter Holding Register (THR) if DLAB=0
IO Address: Base
Bit
Description
Default
Access
7.0
Transmitter Holding register(THR)
Undef.
GPP: w
Summary of Contents for ATCA-8310
Page 12: ...ATCA 8310 Installation and Use 6806800M72D Contents 12 Contents Contents ...
Page 26: ...ATCA 8310 Installation and Use 6806800M72D 26 List of Figures ...
Page 34: ...ATCA 8310 Installation and Use 6806800M72D About this Manual 34 About this Manual ...
Page 54: ...Hardware Preparation and Installation ATCA 8310 Installation and Use 6806800M72D 54 ...
Page 70: ...Controls Indicators and Connectors ATCA 8310 Installation and Use 6806800M72D 70 ...
Page 162: ...BIOS ATCA 8310 Installation and Use 6806800M72D 162 ...
Page 200: ...U Boot ATCA 8310 Installation and Use 6806800M72D 200 ...
Page 244: ...Intelligent Peripheral Management Controller ATCA 8310 Installation and Use 6806800M72D 244 ...
Page 438: ...CPLD and FPGA ATCA 8310 Installation and Use 6806800M72D 438 ...
Page 442: ...Replacing the Battery ATCA 8310 Installation and Use 6806800M72D 442 ...
Page 444: ...Related Documentation ATCA 8310 Installation and Use 6806800M72D 444 ...
Page 454: ...ATCA 8310 Installation and Use 6806800M72D Sicherheitshinweise 454 ...
Page 456: ...Index ATCA 8310 Installation and Use 6806800M72D 456 ...
Page 457: ...Index ATCA 8310 Installation and Use 6806800M72D 457 ...
Page 458: ...Index ATCA 8310 Installation and Use 6806800M72D 458 ...
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