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