266
Table 10.4
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.
Table 10.5 shows the maximum bit rate for each frequency. The values shown are for active
(high-speed) mode.
Table 10.5
Maximum Bit Rate for Each Frequency (Asynchronous Mode)
Maximum Bit Rate
Setting
OSC (MHz)
(bit/s)
n
N
0.0384
*
600
0
0
2
31250
0
0
2.4576
38400
0
0
4
62500
0
0
10
156250
0
0
16
250000
0
0
*
: When SMR is set up to CKS1 = “0”, CKS0 = “1”.
Table 10.6 shows examples of BRR settings in synchronous mode. The values shown are for
active (high-speed) mode.