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Table 16-9 SMR and SCR Settings and SCI Clock Source Selection
SMR
SCR Setting
Bit 7
Bit 1
Bit 0
C/A
CKE1
CKE0
0
0
0
1
1
0
1
1
0
0
1
1
0
1
Clock
Mode
Source
Asynchronous
Internal
mode
External
Clocked
Internal
synchronous
mode
External
SCI Transmit/Receive Clock
SCK Pin Function
SCI does not use SCK pin
Outputs clock with same frequency as bit
rate
Inputs clock with frequency of 16 times
the bit rate
Outputs serial clock
Inputs serial clock
617
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