SH7020 Datasheet, PDF (380/509 Pages) Renesas Technology Corp – SuperH™ RISC engine

Table 13.9
SMR and SCR Settings and SCI Clock Source Selection
SMR SCR Settings
SCI Transmit/Receive Clock
Mode
Bit 7: Bit 1: Bit 0:
C/A CKE1 CKE0 Clock Source SCK Pin Function*
Asynchronous 0
0
0
mode
1
Internal
SCI does not use the SCK pin
Outputs a clock with frequency
matching the bit rate
1
0
External
Inputs a clock with frequency 16
times the bit rate
1
Clocked
1
0
0
synch-
ronous mode
1
Internal
Outputs the serial clock
1
0
External
Inputs the serial clock
1
Note: Select the function in combination with the pin function controller (PFC).
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