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BX-S959SD Series
User’s Manual
Table 6.3. Function of Each Register
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I/O address
Description
03F8H
THR: Transmitter Holding Register [DLAB=0]
Register dedicated to write transmitted data to
03F8H
RBR: Reciever Buffer Register [DLAB=O]
Register dedicated to read received data from
03F8H
DLL: Divisor Latch (LSB) [DLAB=1]
Baud rate setting register (LSB)
03F9H
DLH: Divisor Latch (MSB) [DLAB=1]
Baud rate setting register (MSB)
03F9H
IER: Interrupt Enable Register [DLAB=0]
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