Renesas SH7709S Manual Do Utilizador

Rev. 5.00, 09/03, page 467 of 760

TDRE = 1?

Write transmit data to SCTDR

and set MPBT bit in SCSSR

Transmission ended?

Yes

TEND = 1?

Read TEND bit in SCSSR

Clear TDRE bit to 0

Break output?

Yes

Clear TE bit SCSCR to 0

End of transmission

Yes

Read TDRE bit 

in SCSSR

No

No

Yes

No

No

(1)

(2)

(3)

Start of transmission

Set SCPDR and SCPCR

Note:  Numbers in parentheses refer to steps in the preceding procedure description.