r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 528

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
24. Clock Synchronous Serial Interface
The clock synchronous serial interface is configured as follows.
Clock synchronous serial interface
The clock synchronous serial interface uses the registers at addresses 0193h to 019Dh. Registers, bits, symbols, and
functions vary even for the same addresses depending on the mode. Refer to the registers of each function for details.
Also, the differences between clock synchronous communication mode and clock synchronous serial mode are the
options of the transfer clock, clock output format, and data output format.
24.1
Table 24.1
0
0
1
1
IICSEL Bit in
Synchronous serial communication unit (SSU)
I
The clock synchronous serial interface has four modes.
Table 24.1 lists the Mode Selections. Refer to 25. Synchronous Serial Communication Unit (SSU), 26. I
Interface and the sections that follow for details of each mode.
SSUIICSR
2
Register
C bus Interface
Mode Selection
(ICE Bit in ICCR1
0
0
1
1
Mode Selections
Bit 7 in 0198h
Register)
(SSUMS Bit in SSMR2
0
1
0
1
Register, FS Bit in
SAR Register)
Bit 0 in 019Dh
Synchronous serial
communication unit
I
2
C bus interface
Function
Clock synchronous communication mode
4-wire bus communication mode
I
Clock synchronous serial mode
2
C bus interface mode
24. Clock Synchronous Serial Interface
Clock synchronous
communication mode
4-wire bus communication mode
I
Clock synchronous serial mode
2
C bus interface mode
Mode
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2
C bus