R01AN1504EJ0100 Datasheet, PDF(28/50 Page) Renesas Technology Corp – Using the DTC to Perform Continuous Clock

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R01AN1504EJ0100 Datasheet, PDF (28/50 Pages) Renesas Technology Corp – Using the DTC to Perform Continuous Clock

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RL78/G14

4.8.7 CSI00 Operation Start

Figure 4.11 shows the CSI00 operation start.

R_CSI00_Start

Enable the CSI00 interrupt

Set the output values of pins

SCK00 and SO00

Enable to output from CSI00

Enable to start the CSI00

communication operation

Using the DTC to Perform Continuous Clock

Synchronous Serial Communication

IF0H register

CSIIF00 bit â 0: No interrupt request signal is generated

MK0H register

CSIMK00 bit â 0: Interrupt servicing enabled

SO0 register

CKO00 bit â 1: Serial clock output value is "1"

SO00 bit â 0: Serial data output value is "0"

SOE0 register

SOE000 bit â 1

SS0 register

SS00 bit â 1

return

Figure 4.11 CSI00 Operation Start

Enabling the CSI00 interrupt

â¢ Interrupt request flag register (IF0H)

Symbol

IF0H

SREIF0 SRIF0

STIF0

TMIF01H CSIIF01 CSIIF00

IICIF01 IICIF00

Value

SREIF2 SRIF2

STIF2

TMIF11H CSIIF21 CSIIF20

IICIF21 IICIF20

â¢ Bit 5

CSIIF00

bit

Interrupt request flag

No interrupt request signal is generated

Interrupt request signal is generated, interrupt request status

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 28 of 47

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