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SH7764 Datasheet, PDF (585/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series
Section 15 Serial Communication Interface with FIFO (SCIF)
Table 15.11 SCSMR and SCSCR Settings and SCIF Clock Source Selection
SCSMR
SCSCR
SCIF Transmit/Receive Clock
Bit 1, 0
Bit 7 C/A CKE[1:0]
Mode
Clock
Source SCK Pin Function
0
00
Asynchronous Internal SCIF does not use the SCK pin
01
Outputs a clock with a frequency 16 or 8
times the bit rate
10
External Inputs a clock with frequency 16 or 8 times
the bit rate
11
Setting prohibited
1
0x
10
Clock
synchronous
Internal Outputs the serial clock
External Inputs the serial clock
11
Setting prohibited
[Legend]
x: Don't care
Note: When using the baud rate generator in double-speed mode (BGMD = 1), select
asynchronous mode by setting the C/A bit to 0, and select an internal clock as a clock
source and the SCK pin is not used (the CKE[1:0] bits set to 00).
Rev. 1.00 Nov. 22, 2007 Page 529 of 1692
REJ09B0360-0100