CHAPTER 15 SERIAL INTERFACE UART6
Preliminary User’s Manual U17260EJ3V1UD
378
Figure 15-24. 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
/8 to f
XCLK6
/255) of the 8-bit counter can be set by bits 7 to 0 (MDL67 to MDL60) of BRGC6.
Table 15-4. Set Value of TPS63 to TPS60
Base Clock (f
XCLK6
) Selection
TPS63 TPS62 TPS61 TPS60
f
PRS
=
2 MHz
f
PRS
=
5 MHz
f
PRS
=
10 MHz
f
PRS
=
20 MHz
0 0 0 0
f
PRS
2 MHz
5 MHz
10 MHz
20 MHz
0 0 0 1
f
PRS
/2
1 MHz
2.5 MHz
5 MHz
10 MHz
0 0 1 0
f
PRS
/2
2
500 kHz
1.25 MHz 2.5 MHz
5 MHz
0 0 1 1
f
PRS
/2
3
250 kHz
625 kHz
1.25 MHz 2.5 MHz
0 1 0 0
f
PRS
/2
4
125 kHz
312.5 kHz
625 kHz
1.25 MHz
0 1 0 1
f
PRS
/2
5
62.5 kHz
156.25 kHz 312.5 kHz 625 kHz
0 1 1 0
f
PRS
/2
6
31.25 kHz
78.13 kHz
156.25 kHz 312.5 kHz
0 1 1 1
f
PRS
/2
7
15.625 kHz 39.06 kHz
78.13 kHz 156.25 kHz
1 0 0 0
f
PRS
/2
8
7.813 kHz
19.53 kHz
39.06 kHz 78.13 kHz
1 0 0 1
f
PRS
/2
9
3.906 kHz
9.77 kHz
19.53 kHz 39.06 kHz
1 0 1 0
f
PRS
/2
10
1.953 kHz
4.88 kHz
9.77 kHz
19.53 kHz
1 0 1 1
TM50
output
Other than above
Setting prohibited