364
CHAPTER 20 UART2, UART3
20.4.7
Baud Rate Generator Register 0 and 1 (BGR02/03 and
BGR12/13)
The baud rate generator registers 0 and 1 (BGR02/03 and BGR12/13) set the division
ratio for the serial clock. Also the actual count of the transmission reload counter can
be read.
■
Bit Configuration of Baud Rate Generator Register (BGR02/03 and BGR12/13)
Figure 20.4-8 shows the bit configuration of the baud rate generator register (BGR02/03 and BGR12/13).
Figure 20.4-8 Bit Configuration of Baud Rate Generator Register (BGR02/03 and BGR12/13)
The baud rate generator register sets the division ratio of the serial clock. The BGR12/13 and BGR02/03
correspond to the upper byte and lower byte, respectively, and writing of counter reload value and reading
of transmission reload counter value is allowed.
Also, both registers can be read or written via byte or word access.
When writing reload value other than "0" to baud rate generator register, the reload counter starts counting.
15
b
it
14
1
3
12
11
10
9
8
7 6 5 4
3
2 1 0
Initi
a
l v
a
l
u
e
0 0 0 0 0 0 0 0
B
R/W R/W R/W
R/W
R/W
R/W R/W
b
it7 to
b
it0
BGR7 to BGR0
B
au
d r
a
te Gener
a
tor Regi
s
ter 02,0
3
write
Write
b
it 7 to 0 of relo
a
d v
a
l
u
e to co
u
nter
re
a
d
Re
a
d
b
it 7 to 0 of tr
a
n
s
mi
ss
ion relo
a
d co
u
nter
b
it14 to
b
it
8
BGR14 to BGR
8
B
au
d r
a
te Gener
a
tor Regi
s
ter 12,1
3
write
Write
b
it 14 to
8
of relo
a
d v
a
l
u
e to co
u
nter
re
a
d
Re
a
d
b
it 14 to
8
of tr
a
n
s
mi
ss
ion relo
a
d co
u
nter
b
it15
Undefined
b
it
"0" i
s
re
a
d.
R/W
:
Re
a
d
ab
le
a
nd writ
ab
le
R
-
:
Re
a
d onl
:
y
R/W R/W R/W
R/W
R/W
R/W R/W R/W
0 0 0 0 0 0 0 0
B
BGR0
3
: 00
3
51E
H
BGR1
3
: 00
3
51F
H
Addre
ss
:
R
re
a
d
BGR02: 00
3
5DE
H
BGR12: 00
3
5DF
H
Undefined
b
it
Содержание MB90390 Series
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Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
Страница 18: ...xiv ...
Страница 132: ...104 CHAPTER 5 CLOCKS ...
Страница 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Страница 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Страница 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Страница 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
Страница 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Страница 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 364: ...336 CHAPTER 19 UART0 UART1 ...
Страница 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Страница 432: ...404 CHAPTER 20 UART2 UART3 ...
Страница 482: ...454 CHAPTER 22 SERIAL I O ...
Страница 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Страница 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Страница 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Страница 722: ...694 APPENDIX ...
Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
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