NEC Renesas V850/SC1 User Manual page 441

(3) Baud rate generator control registers 0 to 3 (BRGC0 to BRGC3)
These registers set the serial clock for UARTn.
BRGCn can be set by an 8-bit memory manipulation instruction.
RESET input sets these registers to 00H.
After reset: 00H
7
BRGCn MDLn7
(n = 0 to 3)
MD MD
Ln7 Ln6
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
• •
• •
• •
1 1
Cautions 1. The value of BRGCn becomes 00H after reset. Before starting operation, select a setting
other than "Setting prohibited". Selecting the "Setting prohibited" setting in stop mode
does not cause any problems.
2. If BRGCn is written during communication processing, the output of the baud rate
generator will be disturbed and communication will not be performed normally. Therefore,
do not write to BRGCn during communication processing.
Remark f : Source clock of 8-bit counter
SCK
CHAPTER 11 SERIAL INTERFACE FUNCTION
R/W
Address:
6 5
MDLn6 MDLn5
MD MD MD MD MD
Ln5 Ln4 Ln3 Ln2 Ln1
×
0 0 0
0 0 1 0
0 0 1 0
0 0 1 0
0 0 1 0
0 0 1 1
0 0 1 1
0 0 1 1
0 0 1 1
0 1 0 0
• • • •
• • • •
• • • •
1 1 1 1
User's Manual U15109EJ3V0UD
BRGC0: FFFFF304H BRGC1: FFFFF314H
BRGC2: FFFFF234H BRGC3: FFFFF2B4H
4 3
MDLn4 MDLn3 MDLn2
MD Selection of input clock
Ln0
× ×
Setting prohibited
0 0 f /8
SCK
0 1 f /9
SCK
1 0 f /10
SCK
1 1 f /11
SCK
0 0 f /12
SCK
0 1 f /13
SCK
1 0 f /14
SCK
1 1 f /15
SCK
0 0 f /16
SCK
• •
• •
• •
1 1 f /255
SCK
2 1 0
MDLn1 MDLn0
•
•
•
k
−
8
9
10
11
12
13
14
15
16
•
•
•
255
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