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RL78/D1A User's Manual: Hardware - Renesas

RL78/D1A User's Manual: Hardware - Renesas

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Under development<br />

Preliminary document<br />

Specifications in this document are tentative and subject to change.<br />

<strong>RL78</strong>/<strong>D1A</strong> CHAPTER 13 ASYNCHRONOUS SERIAL INTERFACE LIN-UART (UARTF)<br />

LRxDn pin<br />

Internal successful<br />

BF flag<br />

Internal successful<br />

SF flag<br />

UFnHDC flag<br />

INTLSn<br />

INTLRn<br />

UFnBRS11 to<br />

UFnBRS00 bits<br />

“L”<br />

Figure 13-57. Example of Successful BF, SF, and PID Reception<br />

B<br />

Old value<br />

B ≥ C × 11<br />

BF successful<br />

transmission/<br />

reception disabled<br />

C<br />

55H checked, based on C<br />

Transmission/<br />

reception stopped<br />

55H successful<br />

Baud rate setting<br />

transmission/<br />

reception enabled<br />

Sets UFnCLHDC bit to 1<br />

Clear<br />

R01UH0317EJ0004 Rev. 0.04 759<br />

Feb. 22, 2013<br />

PID<br />

New value<br />

Caution When a PID reception error has occurred, a status interrupt request signal (INTLSn) is generated<br />

instead of a reception complete interrupt request signal (INTLRn) and other error flags (such as<br />

UFnFE and UFnIPE) change.<br />

LRxDn pin<br />

INTLRn<br />

Figure 13-58. Example of Successful BF Reception During SF Reception (No PID Reception Error)<br />

Internal successful<br />

BF flag<br />

Internal successful<br />

SF flag<br />

UFnHDC flag<br />

INTLSn<br />

UFnBRS11 to<br />

UFnBRS00 bits<br />

B<br />

“L”<br />

B ≥ C × 11<br />

BF successful<br />

transmission/ 55H failed<br />

reception disabled<br />

C<br />

D<br />

55H checked,<br />

based on C<br />

Transmission/reception stopped<br />

Old value<br />

D ≥ E × 11<br />

BF successful<br />

transmission/<br />

reception disabled<br />

E<br />

55H checked, based on E<br />

55H successful<br />

Baud rate setting<br />

transmission/<br />

reception enabled<br />

PID<br />

Sets UFnCLHDC bit to 1<br />

Clear<br />

New value<br />

Caution When a PID reception error has occurred, a status interrupt request signal (INTLSn) is generated<br />

instead of a reception complete interrupt request signal (INTLRn) and other error flags (such as<br />

UFnFE and UFnIPE) change.<br />

Remark n = 0, 1

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