268
Table 10.7
Relation between n and Clock
SMR Setting
n
Clock
CKS1
CKS0
0
ø
0
0
0
ø
w
/2
*
1
/ø
w
*
2
0
1
2
ø/16
1
0
3
ø/64
1
1
Notes: 1. ø w/2 clock in active (medium-speed/high-speed) mode and sleep mode
2. ø w clock in subactive mode and subsleep mode
3. In subactive or subsleep mode, SCI3 can be operated when CPU clock is øw/2 only.
10.2.9
Clock stop register 1 (CKSTPR1)
—
TFCKSTP TCCKSTP TACKSTP
S31CKSTP S32CKSTP ADCKSTP TGCKSTP
7
6
5
4
3
2
1
0
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
Initial value
Read/Write
CKSTPR1 is an 8-bit read/write register that performs module standby mode control for peripheral
modules. Only the bits relating to SCI3 are described here. For details of the other bits, see the
sections on the relevant modules.
Bit 6: SCI3-1 module standby mode control (S31CKSTP)
Bit 6 controls setting and clearing of module standby mode for SCI31.
S31CKSTP
Description
0
SCI3-1 is set to module standby mode
1
SCI3-1 module standby mode is cleared
(initial value)
Note:
All SCI31 register is initialized in module standby mode.
Bit 5: SCI3-2 module standby mode control (S32CKSTP)
Bit 5 controls setting and clearing of module standby mode for SCI32.
S32CKSTP
Description
0
SCI3-2 is set to module standby mode
1
SCI3-2 module standby mode is cleared
(initial value)
Note:
All SCI32 register is initialized in module standby mode.