Renesas R5S72621 Manual Do Utilizador
Section 15 Serial Communication Interface with FIFO
R01UH0134EJ0400 Rev. 4.00
Page 723 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit
Name
Initial
Value R/W
Value R/W
Description
2
0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
always be 0.
1, 0
CKE[1:0]
00
R/W
Clock Enable
Select the clock source and enable or disable clock
output from the SCK pin. Depending on CKE[1:0], the
SCK pin can be used for serial clock output or serial
clock input. If serial clock output is set in clock
synchronous mode, set the C/
output from the SCK pin. Depending on CKE[1:0], the
SCK pin can be used for serial clock output or serial
clock input. If serial clock output is set in clock
synchronous mode, set the C/
A bit in SCSMR to 1, and
then set CKE[1:0]. Values other than B'00 cannot be
used for channels that do not have an SCK pin.
used for channels that do not have an SCK pin.
Asynchronous mode
00: Internal clock, SCK pin used for input pin (input
00: Internal clock, SCK pin used for input pin (input
signal is ignored)
01: Internal clock, SCK pin used for clock output
(The output clock frequency is either 16 or 8 times
the bit rate.)
the bit rate.)
10: External clock, SCK pin used for clock input
(The input clock frequency is either 16 or 8 times
the bit rate.)
the bit rate.)
11: Setting prohibited
Clock synchronous mode
00: Internal clock, SCK pin used for serial clock output
00: Internal clock, SCK pin used for serial clock output
01: Internal clock, SCK pin used for serial clock output
10: External clock, SCK pin used for serial clock input
11: Setting prohibited