HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 369

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit
1
0
Bit Name
CKE1
CKE0
Initial
value
0
0
R/W
R/W
R/W
Description
Clock Enable 1 and 0
Select the SCIF clock source and enable or disable
clock output from the SCK pin. Depending on the
combination of CKE1 and CKE0, the SCK pin can be
used for serial clock output or serial clock input.
The CKE0 setting is valid only when the SCIF is
operating on the internal clock (CKE1 = 0). The CKE0
setting is ignored when an external clock source is
selected (CKE1 = 1). In synchronous mode, select the
SCIF operating mode in the serial mode register
(SCSMR), then set CKE1 and CKE0.
•
00: Internal clock, SCK pin used for input pin (The input
01: Internal clock, SCK pin used for clock output
10: External clock, SCK pin used for clock input
11: Setting prohibited
•
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
Section 14 Serial Communication Interface with FIFO (SCIF)
Asynchronous mode
Synchronous mode
signal is ignored. The state of the SCK pin depends
on both the SCKIO and SCKDT bits.)
(The output clock frequency is 16 times the bit rate.)
(The input clock frequency is 16 times the bit rate.)
Rev. 6.00 Jun. 12, 2007 Page 337 of 610
REJ09B0131-0600