upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 248

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(2) Generation of serial clock
248
A serial clock to be generated can be specified by using clock selection register 6 (CKSR6) and baud rate
generator control register 6 (BRGC6).
The clock to be input to the 8-bit counter can be set by bits 3 to 0 (TPS63 to TPS60) of CKSR6 and the division
value (f
Remark POWER6: Bit 7 of asynchronous serial interface operation mode register 6 (ASIM6)
TPS63
XCLK6
event counter
0
0
0
0
0
0
0
0
1
1
1
1
8-bit timer/
/4 to f
50 output
f
PRS
f
f
f
f
f
f
f
f
TXE6:
RXE6:
CKSR6:
BRGC6:
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
f
PRS
/2
f
XCLK6
PRS
/2
/2
/2
/2
/2
/2
/2
/2
TPS62
/2
10
2
3
4
5
6
7
8
9
Other than above
0
0
0
0
1
1
1
1
0
0
0
0
CKSR6: TPS63 to TPS60
/255) of the 8-bit counter can be set by bits 7 to 0 (MDL67 to MDL60) of BRGC6.
Figure 10-17. Configuration of Baud Rate Generator
Bit 6 of ASIM6
Bit 5 of ASIM6
Clock selection register 6
Baud rate generator control register 6
POWER6
Selector
TPS61
Table 10-4. Set Value of TPS63 to TPS60
CHAPTER 10 SERIAL INTERFACE UART6
0
0
1
1
0
0
1
1
0
0
1
1
Preliminary User’s Manual U19014EJ1V0UD
f
XCLK6
TPS60
0
1
0
1
0
1
0
1
0
1
0
1
POWER6, TXE6 (or RXE6)
BRGC6: MDL67 to MDL60
Match detector
f
f
f
f
f
f
f
f
f
f
f
TM50 output
Setting prohibited
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
8-bit counter
Baud rate generator
/2
/2
/2
/2
/2
/2
/2
/2
/2
/2
2
3
4
5
6
7
8
9
10
Base clock (f
12 MHz
6 MHz
3 MHz
1.5 MHz
750 kHz
375 kHz
187.5 kHz
93.75 kHz
46.875 kHz
23.438 kHz
11.719 kHz
f
PRS
= 12 MHz
1/2
XCLK6
) selection
16 MHz
8 MHz
4 MHz
2 MHz
1 MHz
500 kHz
250 kHz
125 kHz
62.5 kHz
31.25 kHz
15.625 kHz
f
Baud rate
PRS
= 16 MHz