NEC NEC PD78081(A), User Manual

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144
CHAPTER 11 SERIAL INTERFACE CHANNEL 2
Baud Rate Generator Input Clock Selection MDL3 MDL2 MDL1 MDL0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
f
SCK
/16
f
SCK
/17
f
SCK
/18
f
SCK
/19
f
SCK
/20
f
SCK
/21
f
SCK
/22
f
SCK
/23
f
SCK
/24
f
SCK
/25
f
SCK
/26
f
SCK
/27
f
SCK
/28
f
SCK
/29
f
SCK
/30
f
SCKNote
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
—
6 5 4 3 2 1 0 7
Symbol
BRGC TPS3 TPS2 TPS1 TPS0 MDL3 MDL2 MDL1 MDL0 FF73H 00H R/W
Address After Reset R/W
k
(4) Baud rate generator control register (BRGC)
This register sets the serial clock for serial interface channel 2.
BRGC is set with an 8-bit memory manipulation instruction.
RESET input sets BRGC to 00H.
Figure 11-6. Baud Rate Generator Control Register Format (1/2)
Note Can only be used in 3-wire serial I/O mode.
Remarks 1. f
SCK
: 5-bit counter source clock
2. k : Value set in MDL0 to MDL3 (0
≤
k
≤
14)