CHAPTER 11 SERIAL INTERFACE UART6
User’s Manual U17446EJ3V1UD
190
(4) Clock selection register 6 (CKSR6)
This register selects the base clock of serial interface UART6.
CKSR6 can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Remark
CKSR6 can be refreshed (the same value is written) by software during a communication operation
(when bit 7 (POWER6) and bit 6 (TXE6) of ASIM6 = 1 or bit 7 (POWER6) and bit 5 (RXE6) of ASIM6
= 1).
Figure 11-8. Format of Clock Selection Register 6 (CKSR6)
Address: FF96H After reset: 00H R/W
Symbol
7 6 5 4 3 2 1 0
CKSR6
0 0 0 0
TPS63
TPS62
TPS61
TPS60
TPS63 TPS62 TPS61 TPS60
Base
clock
(f
XCLK6
) selection
0 0 0 0
f
XP
(10 MHz)
0 0 0 1
f
XP
/2 (5 MHz)
0 0 1 0
f
XP
/2
2
(2.5 MHz)
0 0 1 1
f
XP
/2
3
(1.25 MHz)
0 1 0 0
f
XP
/2
4
(625 kHz)
0 1 0 1
f
XP
/2
5
(312.5 kHz)
0 1 1 0
f
XP
/2
6
(156.25 kHz)
0 1 1 1
f
XP
/2
7
(78.13 kHz)
1 0 0 0
f
XP
/2
8
(39.06 kHz)
1 0 0 1
f
XP
/2
9
(19.53 kHz)
1 0 1 0
f
XP
/2
10
(9.77 kHz)
1 0 1 1
f
XP
/2
11
(4.89 kHz)
Other than above
Setting prohibited
Caution Make sure POWER6 = 0 when rewriting TPS63 to TPS60.
Remarks 1.
Figures in parentheses are for operation with f
XP
= 10 MHz
2.
f
XP
: Oscillation frequency of clock to peripheral hardware