37
Table 5.5 Serial Interface Control Register Map (Channel B)
Address
Initial value
Register name (at resd)
Register name (at write)
Remarks
H’BA800000
-
RHR
(Receive Holding Register)
THR
(Transfer Holding Register)
LCR
bit7=0
H’BA800000
-
DLL
(LSB of Divisor Latch)
DLL
(LSB of Divisor Latch)
LCR
bit7=1
H’BA800002
H’00
IER
(Interrupt Enable Register)
IER
(Interrupt Enable Register)
LCR
bit7=0
H’BA800002
-
DLM
(MSB of Divisor Latch)
DLM
(MSB of Divisor Latch)
LCR
bit7=1
H’BA800004
H’01
ISR
(Interrupt Status Register)
FCR
(FIFO Control Register)
H’BA800006
H’00
LCR
(Line Control Register)
LCR
(Line Control Register)
H’BA800008
H’00
MCR
(Modem Control Register)
MCR
(Modem Control Register)
H’BA80000A
H’60
LSR
(Line Status Register)
N.A
H’BA80000C
H’X0
MSR
(Modem Status Register)
N.A
H’BA80000E
H’FF
SPR
(Scratchpad Register)
SPR
(Scratchpad Register)