Datasheet

Section 14 Serial Communication Interface (SCI)
Rev.6.00 Sep. 27, 2007 Page 610 of 1268
REJ09B0220-0600
For details of clock source selection, see table 14.9.
Bit 1
CKE1
Bit 0
CKE0 Description
0 0 Asynchronous mode Internal clock/SCK pin functions as I/O port
*
1
Synchronous mode Internal clock/SCK pin functions as serial clock
output
1 Asynchronous mode Internal clock/SCK pin functions as clock output
*
2
Synchronous mode Internal clock/SCK pin functions as serial clock
output
1 0 Asynchronous mode External clock/SCK pin functions as clock input
*
3
Synchronous mode External clock/SCK pin functions as serial clock
input
1 Asynchronous mode External clock/SCK pin functions as clock input
*
3
Synchronous mode External clock/SCK pin functions as serial clock
input
Notes: 1. Initial value
2. Outputs a clock of the same frequency as the bit rate.
3. Inputs a clock with a frequency 16 times the bit rate.