SH7052 Datasheet, PDF(520/919 Page) Renesas Technology Corp – SuperHTM RISC engine

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SH7052 Datasheet, PDF (520/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

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Initialization

1

Start of transmission/reception

Read TDRE bit in SSR

2

No

TDRE = 1?

Yes

Write transmit data in TDR

and clear TDRE bit in SSR to 0

Read ORER bit in SSR

ORER = 1?

No

Read RDRF bit in SSR

Yes

3

Error handling

4

No

RDRF = 1?

Yes

Read receive data in RDR,

and clear RDRF bit in SSR to 0 5

All

No

data transmitted/

received?

Yes

Clear TE and RE bits in SCR to 0

End of transmission/reception

Figure 14.24 Sample Flowchart for Serial Transmission and Reception

494

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