R1610C RDC Semiconductor, R1610C Datasheet - Page 74

• Manufacturer Part Number: R1610C
• Description: High Performance 16 Bits MCU Integrated One 10/100M Mac Controller - 3.3V Operating Voltage/2.5V Core Voltage
• Manufacturer: RDC Semiconductor

R
This register is Transmitter Holding Register when DLAB=0 and the write function is operated.
For example:
This register is Divisor Latch (LS) Register when DLAB=1.
This register is Divisor Latch (MS) Register when DLAB=1.
R
16.2
74
Register Offset:
Register Name:
Reset Value
Register Offset:
Register Name:
Reset Value
Register Offset:
Register Name:
Reset Value
15
15
15
D
D
The divisor value, DLL[15:0], is the host clock / 16 / Baud Rate.
14
14
14
Host Clock=75Mhz, and Baud Rate=57600, then
Divisor=75Mhz/16/57600=81.3
C
Divisor Latch LS and MS Register
C
13
13
13
®
®
:
:
:
R
R
I
I
S
S
C
C
80h
UART0 Transmitter Holding Register
──
80h
UART0 Divisor Latch (LS) Register
──
82h
UART0 Divisor Latch (MS) Register
──
D
D
12
12
12
S
S
P
P
C
C
o
o
m
m
m
m
u
u
11
11
11
n
n
i
i
c
c
a
a
t
t
i
i
o
o
n
n
10
10
10
9
9
9
81
8
8
8
7
7
7
6
6
6
5
5
5
DLL [15:8]
THR [7:0]
4
4
4
DLL [7:0]
Fast Ethernet RISC Processor
3
3
3
2
2
2
1
1
1
R1610C
October 27, 2003
0
0
0
Final Version 1.5
Data Sheet