Table of Contents
Advertisement
5.3.2 Connector Pins
Figure 5.5 shows the pins of a 15-pin serial interface connector (CN1).
5.3.3 Register Map
Tables 5.4 and 5.5 show register maps for the serial interface controller registers. Each of the serial interface
controller registers must be accessed in words. If access takes place in words, data in the low order 8 bits (D7 to
D0) will become effective.
Address
H'BA000000
H'BA000000
H'BA000002
H'BA000002
H'BA000004
H'BA000006
H'BA000008
H'BA00000A
H'BA00000C
H'BA00000E
1
CN1: 15-pin serial connector
Model name: RMC-EA15MY-OM15-MC1
Moker: Honda Tsushin Kogyo
Figure 5.5 15-pin Serial Interface Connector Pins
Table 5.4 Serial Interface Control Register Map (Channel A)
Initial value
Register name (at resd)
-
RHR
(Receive Holding Register)
-
DLL
(LSB of Divisor Latch)
H'00
IER
(Interrupt Enable Register)
-
DLM
(MSB of Divisor Latch)
H'01
ISR
(Interrupt Status Register)
H'00
LCR
(Line Control Register)
H'00
MCR
(Modem Control Register)
H'60
LSR
(Line Status Register)
H'X0
MSR
(Modem Status Register)
H'FF
SPR
(Scratchpad Register)
Pin No
Signal name
1
GND
2
TxD
15
3
RxD
4
GND
5
RTS
6
CTS
7
GND
8
Reserved
9
Reserved
10
Reserved
11
Reserved
12
Reserved
13
Reserved
14
Reserved
15
Reserved
Register name (at write)
THR
(Transfer Holding Register)
DLL
(LSB of Divisor Latch)
IER
(Interrupt Enable Register)
DLM
(MSB of Divisor Latch)
FCR
(FIFO Control Register)
LCR
(Line Control Register)
MCR
(Modem Control Register)
N.A
N.A
SPR
(Scratchpad Register)
36
Remarks
LCR
bit7=0
LCR
bit7=1
LCR
bit7=0
LCR
bit7=1
Advertisement
Table of Contents
