R01AN1504EJ0100 Datasheet, PDF(17/50 Page) Renesas Technology Corp – Using the DTC to Perform Continuous Clock

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R01AN1504EJ0100 Datasheet, PDF (17/50 Pages) Renesas Technology Corp – Using the DTC to Perform Continuous Clock

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RL78/G14

4.8.5 SAU0 Initialization

Figure 4.9 shows the SAU0 initialization.

Using the DTC to Perform Continuous Clock

Synchronous Serial Communication

R_SAU0_Create

Enable input clock supply

to SAU0

PER0 register

SAU0EN bit â 1: Enables input clock supply

Wait for 4 clocks of fCLK

Set the SAU0 operating clock

CSI00 initialization

R_CSI00_Create()

SPS0 register â 0004H

Bits PRS003 to PRS000 = 0100B: fCLK/24

return

Figure 4.9 SAU0 Initialization

Enabling input clock supply to SAU0

â¢ Peripheral enable register 0 (PER0)

Symbol

PER0

Value

RTCEN

IICA1EN

ADCEN

IICA0EN

SAU1EN

SAU0EN

TAU1EN

TAU0EN

â¢ Bit 2

SAU0EN

bit

Control of serial array unit 0 input clock supply

Stops supply of input clock

â¢ SFR used by serial array unit 0 cannot be written.

â¢ Serial array unit 0 is in the reset status.

Enables input clock supply

â¢ SFR used by serial array unit 0 can be read/written.

For details on register setting, refer to the RL78/G14 Userâs Manual: Hardware.

Legend symbol:

Ã: Unused bit; blank cell: unchanged bit; â: reserved bit or unallocated bit

R01AN1504EJ0100 Rev. 1.00

Feb. 14, 2014

Page 17 of 47

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